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	<title>Bobina de indução - Histórico de revisões</title>
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	<updated>2026-08-30T19:43:35Z</updated>
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	<entry>
		<id>https://wiki.nivel-teorico.com/index.php?title=Bobina_de_indu%C3%A7%C3%A3o&amp;diff=10273&amp;oldid=prev</id>
		<title>Calimero0000: /* O interruptor */</title>
		<link rel="alternate" type="text/html" href="https://wiki.nivel-teorico.com/index.php?title=Bobina_de_indu%C3%A7%C3%A3o&amp;diff=10273&amp;oldid=prev"/>
		<updated>2015-03-19T02:29:23Z</updated>

		<summary type="html">&lt;p&gt;&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;O interruptor&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;pt&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Revisão anterior&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revisão das 02h29min de 19 de março de 2015&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l40&quot;&gt;Linha 40:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Linha 40:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;| caption2 = With capacitor&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;| caption2 = With capacitor&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;| width    = 200  &lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;| width    = 200  &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;| footer   = &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Waveforms in the induction coil&lt;/del&gt;. &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt; &lt;/del&gt;&amp;lt;span style=&quot;color:blue;&quot;&amp;gt;&#039;&#039;i&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039;&lt;/del&gt;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt; &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039;(blue)&lt;/del&gt;&#039;&#039;&amp;lt;/span&amp;gt; &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;is the current in the coil&#039;s primary winding&lt;/del&gt;, &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt; &lt;/del&gt;&amp;lt;span style=&quot;color:red;&quot;&amp;gt;&#039;&#039;v&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039;&lt;/del&gt;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt; &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039;(red)&lt;/del&gt;&#039;&#039;&amp;lt;/span&amp;gt; &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;is the secondary voltage.  Not to common scale&lt;/del&gt;; &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039;v&#039;&#039;&amp;lt;sub&lt;/del&gt;&amp;gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;2&lt;/del&gt;&amp;lt;/&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;sub&lt;/del&gt;&amp;gt; &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;is much larger in bottom drawing&lt;/del&gt;.  &lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;| footer   = &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Formas de onda da bobina de indução, demonstrando como funciona o interruptor&lt;/ins&gt;. &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;O traço &amp;lt;span style=&quot;color:blue;&quot;&amp;gt;azul&amp;lt;/span&amp;gt;, &lt;/ins&gt;&amp;lt;span style=&quot;color:blue;&quot;&amp;gt;&#039;&#039;i&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;&#039;&#039;&amp;lt;/span&amp;gt; &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;é a corrente no enrolamento da bobine primaria.  Ele é quebrado periodicamente pelo contacto vibratório do interruptor. A tensão induzida no secundário&lt;/ins&gt;, &amp;lt;span style=&quot;color:red;&quot;&amp;gt;&#039;&#039;v&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;&#039;&#039;&amp;lt;/span&amp;gt; &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;mostrado em &amp;lt;span style=&quot;color:red&lt;/ins&gt;;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&quot;&lt;/ins&gt;&amp;gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;vermelho&lt;/ins&gt;&amp;lt;/&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;span&lt;/ins&gt;&amp;gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;, é proporcional à taxa de mudança (inclinação) da corrente primária.  Ambos &quot;inicio&quot; e &quot;quebra&quot; dos pulsos de corrente induzem tensão no secundário, mas a mudança de corrente é muito mais abrupta no &quot;intervalo&quot;, e isso gera os pulsos de alta tensão produzidos pela bobina&lt;/ins&gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;}}&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[Imagem:Induction coil waveforms.svg|thumb|left|Formas de onda da bobina de indução, demonstrando como funciona o interruptor. O traço &amp;lt;span style=&quot;color:blue;&quot;&gt;azul&amp;lt;/span&gt;, &amp;lt;span style=&quot;color:blue;&quot;&gt;&#039;&#039;i&amp;lt;sub&gt;1&amp;lt;/sub&gt;&#039;&#039;&amp;lt;/span&gt; é a corrente no enrolamento da bobine primaria.  Ele é quebrado periodicamente pelo contacto vibratório do interruptor. A tensão induzida no secundário, &amp;lt;span style=&quot;color:red;&quot;&gt;&#039;&#039;v&amp;lt;sub&gt;2&amp;lt;/sub&gt;&#039;&#039;&amp;lt;/span&gt; mostrado em &amp;lt;span style=&quot;color:red;&quot;&gt;vermelho&amp;lt;/span&gt;, é proporcional à taxa de mudança (inclinação) da corrente primária.  Ambos &quot;inicio&quot; e &quot;quebra&quot; dos pulsos de corrente induzem tensão no secundário, mas a mudança de corrente é muito mais abrupta no &quot;intervalo&quot;, e isso gera os pulsos de alta tensão produzidos pela bobina.]]&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-added&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-added&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Para operar a bobina continuamente, a alimentação de corrente DC deve ser quebrada repetidamente para criar as mudanças do campo magnético necessárias para indução. Bobinas de indução usam um braço vibrando magneticamente ativando o chamado &amp;#039;interruptor&amp;#039; ou &amp;#039;platinado&amp;#039; conectando rapidamente para quebrar a corrente que flui na a bobina primária. O interruptor é montado na extremidade da bobina ao lado do núcleo de ferro doce. Quando a alimentação é ligada, o campo magnético do núcleo criado pela corrente que flui na primária atrai a armadura de ferro do interruptor presa ao braço elástico, abrindo um par de contatos no circuito primário. Quando o campo magnético então entra em colapso, o braço molas, fechando os contactos novamente e ligando a corrente novamente. Este ciclo é repetido muitas vezes por segundo.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Para operar a bobina continuamente, a alimentação de corrente DC deve ser quebrada repetidamente para criar as mudanças do campo magnético necessárias para indução. Bobinas de indução usam um braço vibrando magneticamente ativando o chamado &amp;#039;interruptor&amp;#039; ou &amp;#039;platinado&amp;#039; conectando rapidamente para quebrar a corrente que flui na a bobina primária. O interruptor é montado na extremidade da bobina ao lado do núcleo de ferro doce. Quando a alimentação é ligada, o campo magnético do núcleo criado pela corrente que flui na primária atrai a armadura de ferro do interruptor presa ao braço elástico, abrindo um par de contatos no circuito primário. Quando o campo magnético então entra em colapso, o braço molas, fechando os contactos novamente e ligando a corrente novamente. Este ciclo é repetido muitas vezes por segundo.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Calimero0000</name></author>
	</entry>
	<entry>
		<id>https://wiki.nivel-teorico.com/index.php?title=Bobina_de_indu%C3%A7%C3%A3o&amp;diff=10272&amp;oldid=prev</id>
		<title>Calimero0000: /* O interruptor */</title>
		<link rel="alternate" type="text/html" href="https://wiki.nivel-teorico.com/index.php?title=Bobina_de_indu%C3%A7%C3%A3o&amp;diff=10272&amp;oldid=prev"/>
		<updated>2015-03-19T02:25:50Z</updated>

		<summary type="html">&lt;p&gt;&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;O interruptor&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;pt&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Revisão anterior&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revisão das 02h25min de 19 de março de 2015&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l31&quot;&gt;Linha 31:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Linha 31:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;===O interruptor===&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;===O interruptor===&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Imagem:Induction coil waveforms.svg|thumb|left|Formas de onda da bobina de indução, demonstrando como funciona o interruptor. &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt; &lt;/del&gt;O traço &amp;lt;span style=&quot;color:blue;&quot;&amp;gt;azul&amp;lt;/span&amp;gt;, &amp;lt;span style=&quot;color:blue;&quot;&amp;gt;&#039;&#039;i&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;&#039;&#039;&amp;lt;/span&amp;gt; é a corrente no enrolamento da bobine primaria.  Ele é quebrado periodicamente pelo contacto vibratório do interruptor. A tensão induzida no secundário, &amp;lt;span style=&quot;color:red;&quot;&amp;gt;&#039;&#039;v&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;&#039;&#039;&amp;lt;/span&amp;gt; mostrado em &amp;lt;span style=&quot;color:red;&quot;&amp;gt;vermelho&amp;lt;/span&amp;gt;, é proporcional à taxa de mudança (inclinação) da corrente primária.  Ambos &quot;inicio&quot; e &quot;quebra&quot; dos pulsos de corrente induzem tensão no secundário, mas a mudança de corrente é muito mais abrupta no &quot;intervalo&quot;, e isso gera os pulsos de alta tensão produzidos pela bobina.]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;{{multiple image&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;| align = left&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;| direction = vertical&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;| header   =&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;| image1   = Induction coil waveforms.svg&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;| caption1 = Without capacitor&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;| image2   = Induction coil waveforms with capacitor.svg&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;| caption2 = With capacitor&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;| width    = 200 &lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;| footer   = Waveforms in the induction coil.  &amp;lt;span style=&quot;color:blue;&quot;&amp;gt;&#039;&#039;i&#039;&#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt; &#039;&#039;(blue)&#039;&#039;&amp;lt;/span&amp;gt; is the current in the coil&#039;s primary winding,  &amp;lt;span style=&quot;color:red;&quot;&amp;gt;&#039;&#039;v&#039;&#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt; &#039;&#039;(red)&#039;&#039;&amp;lt;/span&amp;gt; is the secondary voltage.  Not to common scale; &#039;&#039;v&#039;&#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt; is much larger in bottom drawing. &lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;}}&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Imagem:Induction coil waveforms.svg|thumb|left|Formas de onda da bobina de indução, demonstrando como funciona o interruptor. O traço &amp;lt;span style=&quot;color:blue;&quot;&amp;gt;azul&amp;lt;/span&amp;gt;, &amp;lt;span style=&quot;color:blue;&quot;&amp;gt;&#039;&#039;i&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;&#039;&#039;&amp;lt;/span&amp;gt; é a corrente no enrolamento da bobine primaria.  Ele é quebrado periodicamente pelo contacto vibratório do interruptor. A tensão induzida no secundário, &amp;lt;span style=&quot;color:red;&quot;&amp;gt;&#039;&#039;v&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;&#039;&#039;&amp;lt;/span&amp;gt; mostrado em &amp;lt;span style=&quot;color:red;&quot;&amp;gt;vermelho&amp;lt;/span&amp;gt;, é proporcional à taxa de mudança (inclinação) da corrente primária.  Ambos &quot;inicio&quot; e &quot;quebra&quot; dos pulsos de corrente induzem tensão no secundário, mas a mudança de corrente é muito mais abrupta no &quot;intervalo&quot;, e isso gera os pulsos de alta tensão produzidos pela bobina.]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Para operar a bobina continuamente, a alimentação de corrente DC deve ser quebrada repetidamente para criar as mudanças do campo magnético necessárias para indução. Bobinas de indução usam um braço vibrando magneticamente ativando o chamado &amp;#039;interruptor&amp;#039; ou &amp;#039;platinado&amp;#039; conectando rapidamente para quebrar a corrente que flui na a bobina primária. O interruptor é montado na extremidade da bobina ao lado do núcleo de ferro doce. Quando a alimentação é ligada, o campo magnético do núcleo criado pela corrente que flui na primária atrai a armadura de ferro do interruptor presa ao braço elástico, abrindo um par de contatos no circuito primário. Quando o campo magnético então entra em colapso, o braço molas, fechando os contactos novamente e ligando a corrente novamente. Este ciclo é repetido muitas vezes por segundo.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Para operar a bobina continuamente, a alimentação de corrente DC deve ser quebrada repetidamente para criar as mudanças do campo magnético necessárias para indução. Bobinas de indução usam um braço vibrando magneticamente ativando o chamado &amp;#039;interruptor&amp;#039; ou &amp;#039;platinado&amp;#039; conectando rapidamente para quebrar a corrente que flui na a bobina primária. O interruptor é montado na extremidade da bobina ao lado do núcleo de ferro doce. Quando a alimentação é ligada, o campo magnético do núcleo criado pela corrente que flui na primária atrai a armadura de ferro do interruptor presa ao braço elástico, abrindo um par de contatos no circuito primário. Quando o campo magnético então entra em colapso, o braço molas, fechando os contactos novamente e ligando a corrente novamente. Este ciclo é repetido muitas vezes por segundo.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Calimero0000</name></author>
	</entry>
	<entry>
		<id>https://wiki.nivel-teorico.com/index.php?title=Bobina_de_indu%C3%A7%C3%A3o&amp;diff=10271&amp;oldid=prev</id>
		<title>Calimero0000: /* O interruptor */</title>
		<link rel="alternate" type="text/html" href="https://wiki.nivel-teorico.com/index.php?title=Bobina_de_indu%C3%A7%C3%A3o&amp;diff=10271&amp;oldid=prev"/>
		<updated>2015-03-19T02:20:14Z</updated>

		<summary type="html">&lt;p&gt;&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;O interruptor&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;pt&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Revisão anterior&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revisão das 02h20min de 19 de março de 2015&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l36&quot;&gt;Linha 36:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Linha 36:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Em oposição potenciais são induzidos no secundário quando o interruptor &amp;quot;quebra&amp;quot; o circuito e &amp;#039;fecha&amp;#039; o circuito. No entanto, a mudança de corrente no primário é muito mais abrupta, quando o interruptor &amp;#039;quebra&amp;#039;. Quando fecham os contactos, a corrente se acumula lentamente no primário porque a tensão de alimentação tem capacidade limitada para forçar a corrente através da indutância da bobina. Em contraste, quando abre os contactos do interruptor, a corrente cai a zero de repente. Portanto o pulso de tensão induzida no secundário em &amp;#039;pausa&amp;#039; é muito maior do que o pulso induzido em &amp;#039;fechar&amp;#039;, é a &amp;#039;quebra&amp;#039; que gera a saída de alta tensão da bobina. Um &amp;quot;amortecedor&amp;quot; [[capacitor]] de 0,5 a 15 [[Microfarad|μF]] é usado entre os contactos para saciar o arco sobre o &amp;#039;corte&amp;#039;, que faz com que seja muito mais rápido em comutação e mais altas tensões. Então a saída do circuito aberto de [[onda]] de uma bobina de indução é uma série de alternância de pulsos positivos e negativos, mas com uma polaridade muito maior do que o outro.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Em oposição potenciais são induzidos no secundário quando o interruptor &amp;quot;quebra&amp;quot; o circuito e &amp;#039;fecha&amp;#039; o circuito. No entanto, a mudança de corrente no primário é muito mais abrupta, quando o interruptor &amp;#039;quebra&amp;#039;. Quando fecham os contactos, a corrente se acumula lentamente no primário porque a tensão de alimentação tem capacidade limitada para forçar a corrente através da indutância da bobina. Em contraste, quando abre os contactos do interruptor, a corrente cai a zero de repente. Portanto o pulso de tensão induzida no secundário em &amp;#039;pausa&amp;#039; é muito maior do que o pulso induzido em &amp;#039;fechar&amp;#039;, é a &amp;#039;quebra&amp;#039; que gera a saída de alta tensão da bobina. Um &amp;quot;amortecedor&amp;quot; [[capacitor]] de 0,5 a 15 [[Microfarad|μF]] é usado entre os contactos para saciar o arco sobre o &amp;#039;corte&amp;#039;, que faz com que seja muito mais rápido em comutação e mais altas tensões. Então a saída do circuito aberto de [[onda]] de uma bobina de indução é uma série de alternância de pulsos positivos e negativos, mas com uma polaridade muito maior do que o outro.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;===Capacitor===&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Um arco é formado entre os contactos do interruptor no &#039;corte&#039; que consome a energia armazenada na bobina, retardando a taxa de variação da corrente primária, reduzindo a tensão de saída. Para evitar isso está um [[capacitor]] &#039;&#039;(C)&#039;&#039; entre 0.5 a 15 [[Microfarad|μF]]  é conectado entre os contactos para aumentar a velocidade de comutação &#039;pausa&#039;, produzindo tensões muito maiores. Também previne danos para os contactos pelo arco. O capacitor e o enrolamento primário juntos formam um [[Circuito LC]], assim que em quebra uma oscilação em decomposição fluxos de corrente sinusoidais no primário. Isso induz uma tensão senoidal no secundário. Assim que o pulso de saída de alta tensão em cada pausa na verdade consiste em uma forma alternada série de positivo e negativo pulsos &#039;(à esquerda)&#039; que decaem rapidamente para zero, cada pulso causando uma separado faísca entre os eléctrodos de saída.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Construction details==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Construction details==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Calimero0000</name></author>
	</entry>
	<entry>
		<id>https://wiki.nivel-teorico.com/index.php?title=Bobina_de_indu%C3%A7%C3%A3o&amp;diff=10270&amp;oldid=prev</id>
		<title>Calimero0000: /* O interruptor */</title>
		<link rel="alternate" type="text/html" href="https://wiki.nivel-teorico.com/index.php?title=Bobina_de_indu%C3%A7%C3%A3o&amp;diff=10270&amp;oldid=prev"/>
		<updated>2015-03-19T02:00:57Z</updated>

		<summary type="html">&lt;p&gt;&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;O interruptor&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;pt&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Revisão anterior&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revisão das 02h00min de 19 de março de 2015&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l31&quot;&gt;Linha 31:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Linha 31:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;===O interruptor===&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;===O interruptor===&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Imagem:Induction coil waveforms.svg|thumb|left|Formas de onda da bobina de indução, demonstrando como funciona o interruptor.  O traço &amp;lt;span style=&quot;color:blue;&quot;&amp;gt;azul&amp;lt;/span&amp;gt;, &amp;lt;span style=&quot;color:blue;&quot;&amp;gt;&#039;&#039;i&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;&#039;&#039;&amp;lt;/span&amp;gt; &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt; &lt;/del&gt;é a corrente no enrolamento da bobine primaria.  Ele é quebrado periodicamente pelo contacto vibratório do interruptor. A tensão induzida no secundário, &amp;lt;span style=&quot;color:red;&quot;&amp;gt;&#039;&#039;v&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;&#039;&#039;&amp;lt;/span&amp;gt; mostrado em &amp;lt;span style=&quot;color:red;&quot;&amp;gt;vermelho&amp;lt;/span&amp;gt;, é proporcional à taxa de mudança (inclinação) da corrente primária.  &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Tanto a &lt;/del&gt;&quot;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;marca&lt;/del&gt;&quot; e &quot;quebra&quot; dos pulsos de corrente &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;induzidos da &lt;/del&gt;tensão no secundário, mas a mudança de corrente é muito mais abrupta no &quot;intervalo&quot;, e isso gera os pulsos de alta tensão produzidos pela bobina.]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Imagem:Induction coil waveforms.svg|thumb|left|Formas de onda da bobina de indução, demonstrando como funciona o interruptor.  O traço &amp;lt;span style=&quot;color:blue;&quot;&amp;gt;azul&amp;lt;/span&amp;gt;, &amp;lt;span style=&quot;color:blue;&quot;&amp;gt;&#039;&#039;i&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;&#039;&#039;&amp;lt;/span&amp;gt; é a corrente no enrolamento da bobine primaria.  Ele é quebrado periodicamente pelo contacto vibratório do interruptor. A tensão induzida no secundário, &amp;lt;span style=&quot;color:red;&quot;&amp;gt;&#039;&#039;v&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;&#039;&#039;&amp;lt;/span&amp;gt; mostrado em &amp;lt;span style=&quot;color:red;&quot;&amp;gt;vermelho&amp;lt;/span&amp;gt;, é proporcional à taxa de mudança (inclinação) da corrente primária.  &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Ambos &lt;/ins&gt;&quot;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;inicio&lt;/ins&gt;&quot; e &quot;quebra&quot; dos pulsos de corrente &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;induzem &lt;/ins&gt;tensão no secundário, mas a mudança de corrente é muito mais abrupta no &quot;intervalo&quot;, e isso gera os pulsos de alta tensão produzidos pela bobina.]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;To operate the coil continuously&lt;/del&gt;, &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;the &lt;/del&gt;DC &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;supply current must be broken repeatedly to create the magnetic field changes needed for induction&lt;/del&gt;. &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt; Induction coils use a magnetically activated vibrating arm called an &lt;/del&gt;&#039;&#039;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;interrupter&lt;/del&gt;&#039;&#039; &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;or &#039;&#039;break&#039;&#039; to rapidly connect and break the current flowing into the primary coil&lt;/del&gt;. &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt; The interrupter is mounted on the end of the coil next to the iron core&lt;/del&gt;. &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;  When the power is turned on&lt;/del&gt;, &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;the magnetic field of the core created by the current flowing in the primary attracts the interrupter&#039;s iron armature attached to the springy arm&lt;/del&gt;, &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;opening a pair of contacts in the primary circuit&lt;/del&gt;. &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt; When the magnetic field then collapses&lt;/del&gt;, &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;the arm springs away&lt;/del&gt;, &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;closing the contacts again and turning on the current again&lt;/del&gt;. &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt; This cycle is repeated many times per second&lt;/del&gt;.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Para operar a bobina continuamente&lt;/ins&gt;, &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;a alimentação de corrente &lt;/ins&gt;DC &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;deve ser quebrada repetidamente para criar as mudanças do campo magnético necessárias para indução&lt;/ins&gt;. &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Bobinas de indução usam um braço vibrando magneticamente ativando o chamado &lt;/ins&gt;&#039;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;interruptor&lt;/ins&gt;&#039; &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;ou &lt;/ins&gt;&#039;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;platinado&lt;/ins&gt;&#039; &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;conectando rapidamente para quebrar a corrente que flui na a bobina primária&lt;/ins&gt;. &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;O interruptor é montado na extremidade da bobina ao lado do núcleo de ferro doce&lt;/ins&gt;. &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Quando a alimentação é ligada&lt;/ins&gt;, &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;o campo magnético do núcleo criado pela corrente que flui na primária atrai a armadura de ferro do interruptor presa ao braço elástico&lt;/ins&gt;, &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;abrindo um par de contatos no circuito primário&lt;/ins&gt;. &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Quando o campo magnético então entra em colapso&lt;/ins&gt;, &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;o braço molas&lt;/ins&gt;, &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;fechando os contactos novamente e ligando a corrente novamente&lt;/ins&gt;. &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Este ciclo é repetido muitas vezes por segundo&lt;/ins&gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Opposite potentials are induced in the secondary when the interrupter &lt;/del&gt;&#039;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;breaks&lt;/del&gt;&#039; &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;the circuit and &#039;closes&#039; the circuit&lt;/del&gt;. &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt; However&lt;/del&gt;, &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;the current change in the primary is much more abrupt when the interrupter &lt;/del&gt;&#039;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;breaks&lt;/del&gt;&#039;. &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt; When the contacts close&lt;/del&gt;, &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;the current builds up slowly in the primary because the supply voltage has &lt;/del&gt;a &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;limited ability to force current through the coil&#039;s inductance&lt;/del&gt;. &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt; In contrast&lt;/del&gt;, &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;when the interrupter contacts open&lt;/del&gt;, &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;the current falls to &lt;/del&gt;zero &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;suddenly&lt;/del&gt;. &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt; So the pulse of voltage induced in the secondary at &lt;/del&gt;&#039;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;break&lt;/del&gt;&#039; &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;is much larger than the pulse induced at &lt;/del&gt;&#039;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;close&lt;/del&gt;&#039;, &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;it is the &lt;/del&gt;&#039;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;break&lt;/del&gt;&#039; &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;that generates the coil&#039;s high voltage output&lt;/del&gt;. &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;  A &lt;/del&gt;&quot;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;snubber&lt;/del&gt;&quot; [[capacitor]] &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;of &lt;/del&gt;0&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;.&lt;/del&gt;5 &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;to &lt;/del&gt;15 [[Microfarad|μF]] &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt; is used across the contacts to quench the arc on the &lt;/del&gt;&#039;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;break&lt;/del&gt;&#039;, &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;which causes much faster switching and higher voltages&lt;/del&gt;. &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt; So the open circuit output &lt;/del&gt;[[&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;waveform&lt;/del&gt;]] &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;of an induction coil is a series of alternating positive and negative pulses&lt;/del&gt;, &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;but with one polarity much larger than the other&lt;/del&gt;.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Em oposição potenciais são induzidos no secundário quando o interruptor &quot;quebra&quot; o circuito e &lt;/ins&gt;&#039;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;fecha&lt;/ins&gt;&#039; &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;o circuito&lt;/ins&gt;. &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;No entanto, a mudança de corrente no primário é muito mais abrupta&lt;/ins&gt;, &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;quando o interruptor &lt;/ins&gt;&#039;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;quebra&lt;/ins&gt;&#039;. &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Quando fecham os contactos&lt;/ins&gt;, a &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;corrente se acumula lentamente no primário porque a tensão de alimentação tem capacidade limitada para forçar a corrente através da indutância da bobina&lt;/ins&gt;. &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Em contraste&lt;/ins&gt;, &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;quando abre os contactos do interruptor&lt;/ins&gt;, &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;a corrente cai a &lt;/ins&gt;zero &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;de repente&lt;/ins&gt;. &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Portanto o pulso de tensão induzida no secundário em &lt;/ins&gt;&#039;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;pausa&lt;/ins&gt;&#039; &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;é muito maior do que o pulso induzido em &lt;/ins&gt;&#039;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;fechar&lt;/ins&gt;&#039;, &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;é a &lt;/ins&gt;&#039;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;quebra&lt;/ins&gt;&#039; &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;que gera a saída de alta tensão da bobina&lt;/ins&gt;. &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Um &lt;/ins&gt;&quot;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;amortecedor&lt;/ins&gt;&quot; [[capacitor]] &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;de &lt;/ins&gt;0&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;,&lt;/ins&gt;5 &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;a &lt;/ins&gt;15 [[Microfarad|μF]] &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;é usado entre os contactos para saciar o arco sobre o &lt;/ins&gt;&#039;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;corte&lt;/ins&gt;&#039;, &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;que faz com que seja muito mais rápido em comutação e mais altas tensões&lt;/ins&gt;. &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Então a saída do circuito aberto de &lt;/ins&gt;[[&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;onda&lt;/ins&gt;]] &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;de uma bobina de indução é uma série de alternância de pulsos positivos e negativos&lt;/ins&gt;, &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;mas com uma polaridade muito maior do que o outro&lt;/ins&gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Construction details==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Construction details==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Calimero0000</name></author>
	</entry>
	<entry>
		<id>https://wiki.nivel-teorico.com/index.php?title=Bobina_de_indu%C3%A7%C3%A3o&amp;diff=10269&amp;oldid=prev</id>
		<title>Calimero0000: /* O interruptor */</title>
		<link rel="alternate" type="text/html" href="https://wiki.nivel-teorico.com/index.php?title=Bobina_de_indu%C3%A7%C3%A3o&amp;diff=10269&amp;oldid=prev"/>
		<updated>2015-03-19T01:37:59Z</updated>

		<summary type="html">&lt;p&gt;&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;O interruptor&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
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				&lt;tr class=&quot;diff-title&quot; lang=&quot;pt&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Revisão anterior&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revisão das 01h37min de 19 de março de 2015&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l31&quot;&gt;Linha 31:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Linha 31:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;===O interruptor===&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;===O interruptor===&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Imagem:Induction coil waveforms.svg|thumb|left|Formas de onda da bobina de indução, demonstrando como funciona o interruptor.  O &amp;lt;span style=&quot;color:blue;&quot;&amp;gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;blue&lt;/del&gt;&amp;lt;/span&amp;gt; &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;trace&lt;/del&gt;, &amp;lt;span style=&quot;color:blue;&quot;&amp;gt;&#039;&#039;i&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;&#039;&#039;&amp;lt;/span&amp;gt;  é a corrente no enrolamento da bobine primaria.  Ele é quebrado periodicamente pelo &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;contato &lt;/del&gt;vibratório do interruptor. A tensão induzida no secundário, &amp;lt;span style=&quot;color:red;&quot;&amp;gt;&#039;&#039;v&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;&#039;&#039;&amp;lt;/span&amp;gt; &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;shown in  &lt;/del&gt;&amp;lt;span style=&quot;color:red;&quot;&amp;gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;red&lt;/del&gt;&amp;lt;/span&amp;gt;, é proporcional à taxa de mudança (inclinação) da corrente primária.  Tanto a &quot;marca&quot; e &quot;quebra&quot; dos pulsos de corrente induzidos da tensão no secundário, mas a mudança de corrente é muito mais abrupta no &quot;intervalo&quot;, e isso gera os pulsos de alta tensão produzidos pela bobina.]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Imagem:Induction coil waveforms.svg|thumb|left|Formas de onda da bobina de indução, demonstrando como funciona o interruptor.  O &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;traço &lt;/ins&gt;&amp;lt;span style=&quot;color:blue;&quot;&amp;gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;azul&lt;/ins&gt;&amp;lt;/span&amp;gt;, &amp;lt;span style=&quot;color:blue;&quot;&amp;gt;&#039;&#039;i&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;&#039;&#039;&amp;lt;/span&amp;gt;  é a corrente no enrolamento da bobine primaria.  Ele é quebrado periodicamente pelo &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;contacto &lt;/ins&gt;vibratório do interruptor. A tensão induzida no secundário, &amp;lt;span style=&quot;color:red;&quot;&amp;gt;&#039;&#039;v&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;&#039;&#039;&amp;lt;/span&amp;gt; &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;mostrado em &lt;/ins&gt;&amp;lt;span style=&quot;color:red;&quot;&amp;gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;vermelho&lt;/ins&gt;&amp;lt;/span&amp;gt;, é proporcional à taxa de mudança (inclinação) da corrente primária.  Tanto a &quot;marca&quot; e &quot;quebra&quot; dos pulsos de corrente induzidos da tensão no secundário, mas a mudança de corrente é muito mais abrupta no &quot;intervalo&quot;, e isso gera os pulsos de alta tensão produzidos pela bobina.]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;To operate the coil continuously, the DC supply current must be broken repeatedly to create the magnetic field changes needed for induction.  Induction coils use a magnetically activated vibrating arm called an &amp;#039;&amp;#039;interrupter&amp;#039;&amp;#039; or &amp;#039;&amp;#039;break&amp;#039;&amp;#039; to rapidly connect and break the current flowing into the primary coil.  The interrupter is mounted on the end of the coil next to the iron core.   When the power is turned on, the magnetic field of the core created by the current flowing in the primary attracts the interrupter&amp;#039;s iron armature attached to the springy arm, opening a pair of contacts in the primary circuit.  When the magnetic field then collapses, the arm springs away, closing the contacts again and turning on the current again.  This cycle is repeated many times per second.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;To operate the coil continuously, the DC supply current must be broken repeatedly to create the magnetic field changes needed for induction.  Induction coils use a magnetically activated vibrating arm called an &amp;#039;&amp;#039;interrupter&amp;#039;&amp;#039; or &amp;#039;&amp;#039;break&amp;#039;&amp;#039; to rapidly connect and break the current flowing into the primary coil.  The interrupter is mounted on the end of the coil next to the iron core.   When the power is turned on, the magnetic field of the core created by the current flowing in the primary attracts the interrupter&amp;#039;s iron armature attached to the springy arm, opening a pair of contacts in the primary circuit.  When the magnetic field then collapses, the arm springs away, closing the contacts again and turning on the current again.  This cycle is repeated many times per second.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Calimero0000</name></author>
	</entry>
	<entry>
		<id>https://wiki.nivel-teorico.com/index.php?title=Bobina_de_indu%C3%A7%C3%A3o&amp;diff=10268&amp;oldid=prev</id>
		<title>Calimero0000: /* Construção e função */</title>
		<link rel="alternate" type="text/html" href="https://wiki.nivel-teorico.com/index.php?title=Bobina_de_indu%C3%A7%C3%A3o&amp;diff=10268&amp;oldid=prev"/>
		<updated>2015-03-19T01:30:30Z</updated>

		<summary type="html">&lt;p&gt;&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Construção e função&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;pt&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Revisão anterior&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revisão das 01h30min de 19 de março de 2015&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l24&quot;&gt;Linha 24:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Linha 24:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Construção e função==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Construção e função==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Imagem:Ruhmkorff coil schematic 1.svg|thumb|upright=1.3|Schematic diagram]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Imagem:Ruhmkorff coil schematic 1.svg|thumb|upright=1.3|Schematic diagram]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Veja o diagrama esquemático. Uma bobina de indução consiste em duas bobinas de fio de cobre isolado enrolado ao redor de um &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;comum&lt;/del&gt;[[núcleo magnético|núcleo de ferro doce]] &#039;&#039;(M)&#039;&#039;.&amp;lt;ref name=&quot;Britannica&quot; /&amp;gt;&amp;lt;ref name=&quot;Collins2&quot;&amp;gt;[http://books.google.com/books?id=dJNPAAAAMAAJ&amp;amp;pg=PA16   Collins, 1908, p. 16-19]&amp;lt;/ref&amp;gt;   Uma bobina, chamada o &#039;&#039;[[enrolamento primário]]&#039;&#039; &#039;&#039;(P)&#039;&#039;, é feito de relativamente poucas voltas (dezenas ou centenas) de fio grosso.&amp;lt;ref name=&quot;Collins2&quot; /&amp;gt;  A outra bobina, o &#039;&#039;[[enrolamento secondario]],&#039;&#039; &#039;&#039;(S)&#039;&#039; normalmente consiste em muitos (milhares) de espiras de fio fino.&amp;lt;ref name=&quot;Britannica&quot; /&amp;gt;&amp;lt;ref name=&quot;Collins2&quot; /&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Veja o diagrama esquemático. Uma bobina de indução consiste em duas bobinas de fio de cobre isolado enrolado ao redor de um [[núcleo magnético|núcleo de ferro doce]] &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;comum &lt;/ins&gt;&#039;&#039;(M)&#039;&#039;.&amp;lt;ref name=&quot;Britannica&quot; /&amp;gt;&amp;lt;ref name=&quot;Collins2&quot;&amp;gt;[http://books.google.com/books?id=dJNPAAAAMAAJ&amp;amp;pg=PA16   Collins, 1908, p. 16-19]&amp;lt;/ref&amp;gt;   Uma bobina, chamada o &#039;&#039;[[enrolamento primário]]&#039;&#039; &#039;&#039;(P)&#039;&#039;, é feito de relativamente poucas voltas (dezenas ou centenas) de fio grosso.&amp;lt;ref name=&quot;Collins2&quot; /&amp;gt;  A outra bobina, o &#039;&#039;[[enrolamento secondario]],&#039;&#039; &#039;&#039;(S)&#039;&#039; normalmente consiste em muitos (milhares) de espiras de fio fino.&amp;lt;ref name=&quot;Britannica&quot; /&amp;gt;&amp;lt;ref name=&quot;Collins2&quot; /&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Uma [[corrente elétrica]] é passada através do primário, criando um [[campo magnético]].&amp;lt;ref name=&quot;Britannica&quot; /&amp;gt;&amp;lt;ref name=&quot;Collins2&quot; /&amp;gt;  Por causa do núcleo comum, a maioria do campo magnético da primária casais com o enrolamento secundário. A primária se comporta como um [[indutor]], armazenando a energia no campo magnético associado. Quando a corrente primária é interrompida de repente, o campo magnético desmorona rapidamente.  Isso faz com que o enrolamento segundario entre em self indução através da [[indução eletromagnética]] desenvolvendo entre os terminais [[alta voltagem]]. Devido ao grande número de voltas na bobina secundária, a subida de tensão secundária é normalmente de muitos milhares de [[volt]]s. Esta tensão muitas vezes é suficiente para causar uma [[faísca elétrica]] e fazê-la saltar através de uma abertura de ar separando os terminais de saída do secundário. Por esta razão, as bobinas de indução foram chamadas bobinas de ignição.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Uma [[corrente elétrica]] é passada através do primário, criando um [[campo magnético]].&amp;lt;ref name=&quot;Britannica&quot; /&amp;gt;&amp;lt;ref name=&quot;Collins2&quot; /&amp;gt;  Por causa do núcleo comum, a maioria do campo magnético da primária casais com o enrolamento secundário. A primária se comporta como um [[indutor]], armazenando a energia no campo magnético associado. Quando a corrente primária é interrompida de repente, o campo magnético desmorona rapidamente.  Isso faz com que o enrolamento segundario entre em self indução através da [[indução eletromagnética]] desenvolvendo entre os terminais [[alta voltagem]]. Devido ao grande número de voltas na bobina secundária, a subida de tensão secundária é normalmente de muitos milhares de [[volt]]s. Esta tensão muitas vezes é suficiente para causar uma [[faísca elétrica]] e fazê-la saltar através de uma abertura de ar separando os terminais de saída do secundário &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039;(G)&#039;&#039; &lt;/ins&gt;. Por esta razão, as bobinas de indução foram chamadas bobinas de ignição.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;O tamanho das bobinas de indução é normalmente especificado pelo comprimento da faísca pode produzir; uma bobina de indução de &amp;#039;4&amp;amp;nbsp;inch&amp;#039; (10&amp;amp;nbsp;cm) pode produzir um arco de 4&amp;amp;nbsp;inch.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;O tamanho das bobinas de indução é normalmente especificado pelo comprimento da faísca pode produzir; uma bobina de indução de &amp;#039;4&amp;amp;nbsp;inch&amp;#039; (10&amp;amp;nbsp;cm) pode produzir um arco de 4&amp;amp;nbsp;inch.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Calimero0000</name></author>
	</entry>
	<entry>
		<id>https://wiki.nivel-teorico.com/index.php?title=Bobina_de_indu%C3%A7%C3%A3o&amp;diff=10267&amp;oldid=prev</id>
		<title>Calimero0000 em 01h20min de 19 de março de 2015</title>
		<link rel="alternate" type="text/html" href="https://wiki.nivel-teorico.com/index.php?title=Bobina_de_indu%C3%A7%C3%A3o&amp;diff=10267&amp;oldid=prev"/>
		<updated>2015-03-19T01:20:52Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;pt&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Revisão anterior&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revisão das 01h20min de 19 de março de 2015&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Linha 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Linha 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{Ver desambig| para o tipo específico| Transformador| para o componente eléctrico mais geral| Indutor}}&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{Ver desambig| para o tipo específico| Transformador| para o componente eléctrico mais geral| Indutor}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Ficheiro:Induktionsapparat hg.jpg|thumb|upright=1.2|&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Antique induction coil used in schools&lt;/del&gt;, &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;from around &lt;/del&gt;1900, Bremerhaven, &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Germany&lt;/del&gt;]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Ficheiro:Induktionsapparat hg.jpg|thumb|upright=1.2|&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Bobina de indução antiga usado nas escolas&lt;/ins&gt;, &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;de por volta de &lt;/ins&gt;1900, Bremerhaven, &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Alemanha&lt;/ins&gt;]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Ficheiro:Induction coil cutaway.jpg|thumb|upright=1.2|&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Induction coil showing construction, from 1920.]]&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Ficheiro:Induction coil cutaway.jpg|thumb|upright=1.2|&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Bobina &lt;/ins&gt;de indução, &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;mostrando &lt;/ins&gt;a &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;construção&lt;/ins&gt;, 1920.]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Uma &#039;&#039;&#039;bobina &lt;/del&gt;de indução&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039;&#039; ou &quot;bobina de faísca&quot; (Arcaica) conhecida como um &#039;&#039;&#039;inductorium&#039;&#039;&#039; ou &#039;&#039;&#039;bobina de [[Heinrich Ruhmkorff|Ruhmkorff]]&#039;&#039;&#039; é um tipo de [[transformador]] elétrico  usado para produzir pulsos de alta tensão a partir de uma (DC) [[Corrente contínua]] baixa tensão.  Para criar as mudanças do fluxo necessário para induzir tensão no secundário&lt;/del&gt;, a &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;corrente no primário é repetidamente interrompida por uma contacto mecânico chamado [[interruptor]]. Desenvolvido no início de 1836 por [[Nicholas Callan]] e outros&amp;lt;ref name=&quot;Britannica&quot; /&amp;gt;&lt;/del&gt;, &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;a bobina de indução foi o primeiro tipo de transformador.  Eles foram muito utilizados em [[Raios X|Maquinas de produção de Raios X]]&amp;lt;ref name=&quot;Britannica&quot; /&amp;gt;&amp;lt;ref name=&quot;Collins1&quot;&amp;gt;[http://books.google.com/books?id=dJNPAAAAMAAJ&amp;amp;pg=PR3&amp;amp;dq=X-ray   Collins, 1908, p. iii]&amp;lt;/ref&amp;gt;, [[transmissor de faíscas|transmissores de rádio a faiscas]]&amp;lt;ref name=&quot;Britannica&quot; /&amp;gt;&amp;lt;ref name=&quot;Collins1&quot; /&amp;gt;, [[Lâmpada a arco voltaico|Lâmpadas a arco]] e [[eletroterapia|dispositivos no domínio medical]] da década de 1880, a década de &lt;/del&gt;1920. &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Hoje, a sua única utilização é como [[bobina de ignição]] em [[motor de combustão interna|motores de combustão interna&lt;/del&gt;]] &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;e em física para demonstrar a [[lei de Faraday-Neumann-Lenz|indução]].&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-added&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;A termo &lt;/del&gt;&#039;bobina de indução&#039; &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;também é usada para uma &lt;/del&gt;bobina &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;carregando [[corrente alternada]] &lt;/del&gt;(&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;CA&lt;/del&gt;) de &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;alta-frequência, produzindo &lt;/del&gt;[[&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;corrente de Foucault&lt;/del&gt;|&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;correntes induzidas&lt;/del&gt;]] &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;em objetos colocados no interior da bobina &lt;/del&gt;de &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;material condutor, relativamente grande, em &lt;/del&gt;[[&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;aquecimento indutivo&lt;/del&gt;]] &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;ou equipamento &lt;/del&gt;de [[&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;refino por zonas&lt;/del&gt;]].&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Uma &#039;&#039;&lt;/ins&gt;&#039;bobina de indução&#039;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039; ou &quot;&lt;/ins&gt;bobina &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;de ignição&quot; &lt;/ins&gt;(&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Arcaica&lt;/ins&gt;) &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;conhecida como um &#039;&#039;&#039;inductorium&#039;&#039;&#039; ou &#039;&#039;&#039;bobina &lt;/ins&gt;de [[&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Heinrich Ruhmkorff&lt;/ins&gt;|&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Ruhmkorff&lt;/ins&gt;]]&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039;&#039; é um tipo &lt;/ins&gt;de [[&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;transformador&lt;/ins&gt;]] &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;elétrico  usado para produzir pulsos de alta tensão a partir &lt;/ins&gt;de &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;uma (DC) &lt;/ins&gt;[[&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Corrente contínua&lt;/ins&gt;]] &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;baixa tensão&amp;lt;ref name=&quot;Britannica&quot;&amp;gt;John Archibald Fleming {{cite encyclopedia&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[Ficheiro&lt;/del&gt;:&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Hg&lt;/del&gt;.&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;jpg&lt;/del&gt;|&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;thumb&lt;/del&gt;|&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;270px&lt;/del&gt;| &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;InduktionsapparatBobina &lt;/del&gt;de indução &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;antiga usado nas escolas, &lt;/del&gt;de &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;por volta &lt;/del&gt;de &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;1900, Bremerhaven, Alemanha&lt;/del&gt;]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;  | title = Induction Coil&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;How it works&lt;/del&gt;==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;  | encyclopedia = Encyclopaedia Britannica, 11th Ed.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;File:Induction coil cutaway.jpg&lt;/del&gt;|&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;thumb&lt;/del&gt;|&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;270px&lt;/del&gt;|&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Induction coil showing construction&lt;/del&gt;, &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;from &lt;/del&gt;1920.]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;  | volume = 13&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;  | pages = 502–505&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;  | publisher = The Encyclopaedia Britannica Co&lt;/ins&gt;.  &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;  | date = 1911&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;  | url = http&lt;/ins&gt;:&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;//books.google.com/books?id=XFobAQAAMAAJ&amp;amp;pg=RA1-PA504&amp;amp;dq=%22induction+coil&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;  | id = &lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;  | accessdate = October 13, 2014}}&amp;lt;/ref&amp;gt;&amp;lt;ref name=&quot;Collins&quot;&amp;gt;{{cite book&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;|last=Collins&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;|first=Archie F&lt;/ins&gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;|&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;title=The Design and Construction of Induction Coils&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;|date=1908&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;|page=&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;|publisher=Munn &amp;amp; Co.&lt;/ins&gt;|&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;location=New York&lt;/ins&gt;|&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;url=http://books.google.com/?id=dJNPAAAAMAAJ&amp;amp;pg=PA98}} p.98&amp;lt;/ref&amp;gt;.  Para criar as mudanças do fluxo necessário para induzir tensão no secundário, a corrente no primário é repetidamente interrompida por uma contacto mecânico chamado [[interruptor]]&amp;lt;ref name=&quot;Britannica&quot; /&amp;gt;. Desenvolvido no início de 1836 por [[Nicholas Callan]] e outros&amp;lt;ref name=&quot;Britannica&quot; /&amp;gt;, a bobina &lt;/ins&gt;de indução &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;foi o primeiro tipo de transformador.  Eles foram muito utilizados em [[Raios X|Maquinas &lt;/ins&gt;de &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;produção &lt;/ins&gt;de &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Raios X&lt;/ins&gt;]]&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&amp;lt;ref name&lt;/ins&gt;=&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&quot;Britannica&quot; /&amp;gt;&amp;lt;ref name&lt;/ins&gt;=&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&quot;Collins1&quot;&amp;gt;[http://books.google.com/books?id&lt;/ins&gt;=&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;dJNPAAAAMAAJ&amp;amp;pg&lt;/ins&gt;=&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;PR3&amp;amp;dq=X-ray   Collins, 1908, p. iii]&amp;lt;/ref&amp;gt;, &lt;/ins&gt;[[&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;transmissor de faíscas&lt;/ins&gt;|&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;transmissores de rádio a faiscas]]&amp;lt;ref name=&quot;Britannica&quot; /&amp;gt;&amp;lt;ref name=&quot;Collins1&quot; /&amp;gt;, [[Lâmpada a arco voltaico&lt;/ins&gt;|&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Lâmpadas a arco]] e [[eletroterapia&lt;/ins&gt;|&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;dispositivos no domínio medical]] da década de 1880&lt;/ins&gt;, &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;a década de &lt;/ins&gt;1920. &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Hoje, a sua única utilização é como [[bobina de ignição&lt;/ins&gt;]] &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;em [[motor de combustão interna|motores de combustão interna]] e em física para demonstrar a [[lei de Faraday-Neumann-Lenz|indução]].&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;An induction &lt;/del&gt;[[&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;coil&lt;/del&gt;]] &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;consists of two coils of insulated copper wire wound around a common &lt;/del&gt;[[&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;magnetic core&lt;/del&gt;|&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;iron core&lt;/del&gt;]]&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;. One coil&lt;/del&gt;, &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;called the &#039;&#039;&lt;/del&gt;[[&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;primary winding&lt;/del&gt;]]&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039;, is made from relatively few (tens or hundreds) turns of coarse wire.  The other coil, the &#039;&#039;&lt;/del&gt;[[&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;secondary winding&lt;/del&gt;]]&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;,&#039;&#039; typically consists of many (thousands) turns of fine wire&lt;/del&gt;.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;O termo &#039;bobina de indução&#039; também é usado para uma bobina carregando &lt;/ins&gt;[[&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;corrente alternada&lt;/ins&gt;]] &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;(CA) de alta-frequência, produzindo &lt;/ins&gt;[[&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;corrente de Foucault&lt;/ins&gt;|&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;correntes induzidas&lt;/ins&gt;]] &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;em objetos colocados no interior da bobina de material condutor&lt;/ins&gt;, &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;relativamente grande, em &lt;/ins&gt;[[&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;aquecimento indutivo&lt;/ins&gt;]] &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;ou equipamento de &lt;/ins&gt;[[&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;refino por zonas&lt;/ins&gt;]].&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;An &lt;/del&gt;[[&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;electric current&lt;/del&gt;]] &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;is passed through the primary, creating a &lt;/del&gt;[[&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;magnetic field&lt;/del&gt;]]&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;.  Because of the common core, most of the primary&lt;/del&gt;&#039;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;s magnetic field couples with the secondary winding&lt;/del&gt;. &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;The primary behaves as an &lt;/del&gt;[&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[inductor]]&lt;/del&gt;, &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;storing energy in the associated magnetic field. When the primary current is suddenly interrupted&lt;/del&gt;, &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;the magnetic field rapidly collapses&lt;/del&gt;. &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt; This causes a [[high voltage&lt;/del&gt;]&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;] pulse to be developed across the secondary terminals through &lt;/del&gt;[[&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;electromagnetic induction&lt;/del&gt;]]. &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Because of the large number of turns in the secondary coil&lt;/del&gt;, &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;the secondary voltage pulse is typically many thousands of [[volt]]s. This voltage is often sufficient to cause an &lt;/del&gt;[[&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;electric spark&lt;/del&gt;]], &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;to jump across an air gap separating the secondary&lt;/del&gt;&#039;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;s output terminals.  For this reason, induction coils were called spark coils&lt;/del&gt;. &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt; &lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;==Construção e função==&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Imagem:Ruhmkorff coil schematic 1.svg|thumb|upright=1.3|Schematic diagram&lt;/ins&gt;]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Veja o diagrama esquemático. Uma bobina de indução consiste em duas bobinas de fio de cobre isolado enrolado ao redor de um comum&lt;/ins&gt;[[&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;núcleo magnético|núcleo de ferro doce&lt;/ins&gt;]] &#039;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;(M)&#039;&#039;&lt;/ins&gt;.&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&amp;lt;ref name=&quot;Britannica&quot; /&amp;gt;&amp;lt;ref name=&quot;Collins2&quot;&amp;gt;&lt;/ins&gt;[&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;http://books.google.com/books?id=dJNPAAAAMAAJ&amp;amp;pg=PA16   Collins&lt;/ins&gt;, &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;1908&lt;/ins&gt;, &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;p&lt;/ins&gt;. &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;16-19&lt;/ins&gt;]&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&amp;lt;/ref&amp;gt;   Uma bobina, chamada o &#039;&#039;&lt;/ins&gt;[[&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;enrolamento primário&lt;/ins&gt;]]&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039; &#039;&#039;(P)&#039;&#039;, é feito de relativamente poucas voltas (dezenas ou centenas) de fio grosso&lt;/ins&gt;.&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&amp;lt;ref name=&quot;Collins2&quot; /&amp;gt;  A outra bobina&lt;/ins&gt;, &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;o &#039;&#039;&lt;/ins&gt;[[&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;enrolamento secondario&lt;/ins&gt;]],&#039;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039; &#039;&#039;(S)&#039;&#039; normalmente consiste em muitos (milhares) de espiras de fio fino&lt;/ins&gt;.&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&amp;lt;ref name=&quot;Britannica&quot; /&amp;gt;&amp;lt;ref name=&quot;Collins2&quot; /&amp;gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;The size of induction coils was usually specified by the length of spark it could produce; &lt;/del&gt;a &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;4&amp;amp;nbsp;inch&#039; (10&amp;amp;nbsp;cm) induction coil was one that could produce &lt;/del&gt;a &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;4&amp;amp;nbsp;inch arc&lt;/del&gt;.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Uma [[corrente elétrica]] é passada através do primário, criando um [[campo magnético]].&amp;lt;ref name=&quot;Britannica&quot; /&amp;gt;&amp;lt;ref name=&quot;Collins2&quot; /&amp;gt;  Por causa do núcleo comum, &lt;/ins&gt;a &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;maioria do campo magnético da primária casais com o enrolamento secundário. A primária se comporta como um [[indutor]], armazenando &lt;/ins&gt;a &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;energia no campo magnético associado. Quando a corrente primária é interrompida de repente, o campo magnético desmorona rapidamente.  Isso faz com que o enrolamento segundario entre em self indução através da [[indução eletromagnética]] desenvolvendo entre os terminais [[alta voltagem]]. Devido ao grande número de voltas na bobina secundária, a subida de tensão secundária é normalmente de muitos milhares de [[volt]]s. Esta tensão muitas vezes é suficiente para causar uma [[faísca elétrica]] e fazê-la saltar através de uma abertura de ar separando os terminais de saída do secundário. Por esta razão, as bobinas de indução foram chamadas bobinas de ignição&lt;/ins&gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;===The interrupter===&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;O tamanho das bobinas de indução é normalmente especificado pelo comprimento da faísca pode produzir; uma bobina de indução de &#039;4&amp;amp;nbsp;inch&#039; (10&amp;amp;nbsp;cm) pode produzir um arco de 4&amp;amp;nbsp;inch.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Image&lt;/del&gt;:Induction coil waveforms.svg|thumb|left|&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Waveforms in the induction coil&lt;/del&gt;, &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;demonstrating how the interrupter works&lt;/del&gt;.  &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;The &lt;/del&gt;&amp;lt;span style=&quot;color:blue;&quot;&amp;gt;blue&amp;lt;/span&amp;gt; trace, &amp;lt;span style=&quot;color:blue;&quot;&amp;gt;&#039;&#039;i&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;&#039;&#039;&amp;lt;/span&amp;gt;  &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;is the current in the coil&#039;s primary winding&lt;/del&gt;.  &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;It is broken periodically by the vibrating contact of the interrupter&lt;/del&gt;. &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt; The voltage induced in the secondary&lt;/del&gt;, &amp;lt;span style=&quot;color:red;&quot;&amp;gt;&#039;&#039;v&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;&#039;&#039;&amp;lt;/span&amp;gt; shown in  &amp;lt;span style=&quot;color:red;&quot;&amp;gt;red&amp;lt;/span&amp;gt;, &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;is proportional to the rate of change &lt;/del&gt;(&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;slope&lt;/del&gt;) &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;of the primary current&lt;/del&gt;.  &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Both the &lt;/del&gt;&quot;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;make&lt;/del&gt;&quot; &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;and &lt;/del&gt;&quot;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;break&lt;/del&gt;&quot; &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;of the current induce pulses of voltage in the secondary&lt;/del&gt;, &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;but the current change is much more abrupt on &lt;/del&gt;&quot;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;break&lt;/del&gt;&quot;, &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;and this generates the high voltage pulses produced by the coil&lt;/del&gt;.]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;===O interruptor===&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Imagem&lt;/ins&gt;:Induction coil waveforms.svg|thumb|left|&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Formas de onda da bobina de indução&lt;/ins&gt;, &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;demonstrando como funciona o interruptor&lt;/ins&gt;.  &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;O &lt;/ins&gt;&amp;lt;span style=&quot;color:blue;&quot;&amp;gt;blue&amp;lt;/span&amp;gt; trace, &amp;lt;span style=&quot;color:blue;&quot;&amp;gt;&#039;&#039;i&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;&#039;&#039;&amp;lt;/span&amp;gt;  &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;é a corrente no enrolamento da bobine primaria&lt;/ins&gt;.  &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Ele é quebrado periodicamente pelo contato vibratório do interruptor&lt;/ins&gt;. &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;A tensão induzida no secundário&lt;/ins&gt;, &amp;lt;span style=&quot;color:red;&quot;&amp;gt;&#039;&#039;v&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;&#039;&#039;&amp;lt;/span&amp;gt; shown in  &amp;lt;span style=&quot;color:red;&quot;&amp;gt;red&amp;lt;/span&amp;gt;, &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;é proporcional à taxa de mudança &lt;/ins&gt;(&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;inclinação&lt;/ins&gt;) &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;da corrente primária&lt;/ins&gt;.  &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Tanto a &lt;/ins&gt;&quot;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;marca&lt;/ins&gt;&quot; &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;e &lt;/ins&gt;&quot;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;quebra&lt;/ins&gt;&quot; &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;dos pulsos de corrente induzidos da tensão no secundário&lt;/ins&gt;, &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;mas a mudança de corrente é muito mais abrupta no &lt;/ins&gt;&quot;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;intervalo&lt;/ins&gt;&quot;, &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;e isso gera os pulsos de alta tensão produzidos pela bobina&lt;/ins&gt;.]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;To operate the coil continuously, the DC supply current must be broken repeatedly to create the magnetic field changes needed for induction.  Induction coils use a magnetically activated vibrating arm called an &amp;#039;&amp;#039;interrupter&amp;#039;&amp;#039; or &amp;#039;&amp;#039;break&amp;#039;&amp;#039; to rapidly connect and break the current flowing into the primary coil.  The interrupter is mounted on the end of the coil next to the iron core.   When the power is turned on, the magnetic field of the core created by the current flowing in the primary attracts the interrupter&amp;#039;s iron armature attached to the springy arm, opening a pair of contacts in the primary circuit.  When the magnetic field then collapses, the arm springs away, closing the contacts again and turning on the current again.  This cycle is repeated many times per second.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;To operate the coil continuously, the DC supply current must be broken repeatedly to create the magnetic field changes needed for induction.  Induction coils use a magnetically activated vibrating arm called an &amp;#039;&amp;#039;interrupter&amp;#039;&amp;#039; or &amp;#039;&amp;#039;break&amp;#039;&amp;#039; to rapidly connect and break the current flowing into the primary coil.  The interrupter is mounted on the end of the coil next to the iron core.   When the power is turned on, the magnetic field of the core created by the current flowing in the primary attracts the interrupter&amp;#039;s iron armature attached to the springy arm, opening a pair of contacts in the primary circuit.  When the magnetic field then collapses, the arm springs away, closing the contacts again and turning on the current again.  This cycle is repeated many times per second.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Calimero0000</name></author>
	</entry>
	<entry>
		<id>https://wiki.nivel-teorico.com/index.php?title=Bobina_de_indu%C3%A7%C3%A3o&amp;diff=10266&amp;oldid=prev</id>
		<title>Calimero0000 em 00h00min de 19 de março de 2015</title>
		<link rel="alternate" type="text/html" href="https://wiki.nivel-teorico.com/index.php?title=Bobina_de_indu%C3%A7%C3%A3o&amp;diff=10266&amp;oldid=prev"/>
		<updated>2015-03-19T00:00:36Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;pt&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Revisão anterior&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revisão das 00h00min de 19 de março de 2015&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Linha 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Linha 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{Ver desambig| para o tipo específico| Transformador| para o componente eléctrico mais geral| Indutor}}&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{Ver desambig| para o tipo específico| Transformador| para o componente eléctrico mais geral| Indutor}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Uma &#039;&#039;&#039;bobina de indução&#039;&#039;&#039; ou &quot;bobina de faísca&quot; (Arcaica) conhecida como um &#039;&#039;&#039;inductorium&#039;&#039;&#039; ou &#039;&#039;&#039;bobina de [[Heinrich Ruhmkorff|Ruhmkorff]]&#039;&#039;&#039; é um tipo de [[transformador]] elétrico  usado para produzir pulsos de alta tensão a partir de uma &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;baixa tensão &lt;/del&gt;[[Corrente contínua]] &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;(DC)&lt;/del&gt;.  Para criar as mudanças do fluxo necessário para induzir tensão no secundário, a corrente no primário é repetidamente interrompida por uma contacto mecânico chamado [[interruptor]]. Desenvolvido no início de 1836 por [[Nicholas Callan]] e outros, a bobina de indução foi o primeiro tipo de transformador.  Eles foram muito utilizados em [[Raios X|Maquinas de produção de Raios X]]&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;s, &lt;/del&gt;[&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[spark&lt;/del&gt;-&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;gap transmitter|spark-gap radio transmitter&lt;/del&gt;]&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;]s&lt;/del&gt;, [[&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;arc lamp&lt;/del&gt;|&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;arc lighting&lt;/del&gt;]] &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;and quack medical [[electrotherapy]] devices from the 1880s to the 1920s.  Today their only use is as the [[ignition coil]]s in [[internal combustion engine]]s&lt;/del&gt;, &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;and in physics education to demonstrate &lt;/del&gt;[[&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Faraday&#039;s law of induction&lt;/del&gt;|&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;induction&lt;/del&gt;]]&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;.&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[Ficheiro:Induktionsapparat hg.jpg|thumb|upright=1.2|Antique induction coil used in schools, from around 1900, Bremerhaven, Germany]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt; &lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[Ficheiro:Induction coil cutaway.jpg|thumb|upright=1.2|Induction coil showing construction, from 1920.]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;The term &#039;induction coil&#039; is also used for a coil carrying high-frequency &lt;/del&gt;[[&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;alternating current&lt;/del&gt;]] &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;(AC)&lt;/del&gt;, &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;producing eddy currents to heat objects placed in the interior of the coil&lt;/del&gt;, &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;in &lt;/del&gt;[[&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;induction heating&lt;/del&gt;]] &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;or &lt;/del&gt;[[&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;zone melting&lt;/del&gt;]] &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;equipment.&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Uma &#039;&#039;&#039;bobina de indução&#039;&#039;&#039; ou &quot;bobina de faísca&quot; (Arcaica) conhecida como um &#039;&#039;&#039;inductorium&#039;&#039;&#039; ou &#039;&#039;&#039;bobina de [[Heinrich Ruhmkorff|Ruhmkorff]]&#039;&#039;&#039; é um tipo de [[transformador]] elétrico  usado para produzir pulsos de alta tensão a partir de uma &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;(DC) &lt;/ins&gt;[[Corrente contínua]] &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;baixa tensão&lt;/ins&gt;.  Para criar as mudanças do fluxo necessário para induzir tensão no secundário, a corrente no primário é repetidamente interrompida por uma contacto mecânico chamado [[interruptor]]. Desenvolvido no início de 1836 por [[Nicholas Callan]] e outros&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&amp;lt;ref name=&quot;Britannica&quot; /&amp;gt;&lt;/ins&gt;, a bobina de indução foi o primeiro tipo de transformador.  Eles foram muito utilizados em [[Raios X|Maquinas de produção de Raios X]]&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&amp;lt;ref name=&quot;Britannica&quot; /&amp;gt;&amp;lt;ref name=&quot;Collins1&quot;&amp;gt;&lt;/ins&gt;[&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;http://books.google.com/books?id=dJNPAAAAMAAJ&amp;amp;pg=PR3&amp;amp;dq=X&lt;/ins&gt;-&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;ray   Collins, 1908, p. iii&lt;/ins&gt;]&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&amp;lt;/ref&amp;gt;&lt;/ins&gt;, [[&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;transmissor de faíscas&lt;/ins&gt;|&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;transmissores de rádio a faiscas&lt;/ins&gt;]]&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&amp;lt;ref name=&quot;Britannica&quot; /&amp;gt;&amp;lt;ref name=&quot;Collins1&quot; /&amp;gt;&lt;/ins&gt;, [[&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Lâmpada a arco voltaico&lt;/ins&gt;|&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Lâmpadas a arco&lt;/ins&gt;]] &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;e &lt;/ins&gt;[[&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;eletroterapia|dispositivos no domínio medical&lt;/ins&gt;]] &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;da década de 1880&lt;/ins&gt;, &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;a década de 1920. Hoje&lt;/ins&gt;, &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;a sua única utilização é como &lt;/ins&gt;[[&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;bobina de ignição&lt;/ins&gt;]] &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;em &lt;/ins&gt;[[&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;motor de combustão interna|motores de combustão interna&lt;/ins&gt;]] &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;e em física para demonstrar a &lt;/ins&gt;[[&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;lei de Faraday-Neumann-Lenz&lt;/ins&gt;|&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;indução&lt;/ins&gt;]]&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;File:Induktionsapparat hg.jpg&lt;/del&gt;|&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;thumb|270px|Antique induction coil used in schools, from around 1900, Bremerhaven, Germany&lt;/del&gt;]]&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-added&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;A termo &#039;bobina de indução&#039; também é usada para uma bobina carregando [[corrente alternada]] (CA) de alta-frequência, produzindo [[corrente de Foucault|correntes induzidas]] em objetos colocados no interior da bobina de material condutor, relativamente grande, em [[aquecimento indutivo]] ou equipamento de [[refino por zonas]].&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[Ficheiro:Hg.jpg|thumb|270px| InduktionsapparatBobina de indução antiga usado nas escolas, de por volta de 1900, Bremerhaven, Alemanha]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==How it works==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==How it works==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[File:Induction coil cutaway.jpg|thumb|270px|Induction coil showing construction, from 1920.]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[File:Induction coil cutaway.jpg|thumb|270px|Induction coil showing construction, from 1920.]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Calimero0000</name></author>
	</entry>
	<entry>
		<id>https://wiki.nivel-teorico.com/index.php?title=Bobina_de_indu%C3%A7%C3%A3o&amp;diff=10265&amp;oldid=prev</id>
		<title>Calimero0000 em 22h32min de 18 de março de 2015</title>
		<link rel="alternate" type="text/html" href="https://wiki.nivel-teorico.com/index.php?title=Bobina_de_indu%C3%A7%C3%A3o&amp;diff=10265&amp;oldid=prev"/>
		<updated>2015-03-18T22:32:35Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;pt&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Revisão anterior&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revisão das 22h32min de 18 de março de 2015&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Linha 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Linha 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{Ver desambig| para o tipo específico| Transformador| para o componente eléctrico mais geral| Indutor}}&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{Ver desambig| para o tipo específico| Transformador| para o componente eléctrico mais geral| Indutor}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Uma &#039;&#039;&#039;bobina de indução&#039;&#039;&#039; ou &quot;bobina de faísca&quot; (Arcaica) conhecida como um &#039;&#039;&#039;inductorium&#039;&#039;&#039; ou &#039;&#039;&#039;bobina de [[Heinrich Ruhmkorff|Ruhmkorff&#039;&#039;&#039;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;]] &lt;/del&gt;é um tipo de [[transformador]] elétrico  usado para produzir pulsos de alta tensão a partir de uma baixa tensão [[Corrente contínua]] (DC).  Para criar as mudanças do fluxo necessário para induzir tensão no secundário, a corrente no primário é repetidamente interrompida por uma contacto mecânico chamado [[interruptor]]. Desenvolvido no início de 1836 por [[Nicholas Callan]] e outros, a bobina de indução foi o primeiro tipo de transformador.  Eles foram muito utilizados em [[Raios X|Maquinas de produção de Raios X]]s, [[spark-gap transmitter|spark-gap radio transmitter]]s, [[arc lamp|arc lighting]] and quack medical [[electrotherapy]] devices from the 1880s to the 1920s.  Today their only use is as the [[ignition coil]]s in [[internal combustion engine]]s, and in physics education to demonstrate [[Faraday&#039;s law of induction|induction]].&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Uma &#039;&#039;&#039;bobina de indução&#039;&#039;&#039; ou &quot;bobina de faísca&quot; (Arcaica) conhecida como um &#039;&#039;&#039;inductorium&#039;&#039;&#039; ou &#039;&#039;&#039;bobina de [[Heinrich Ruhmkorff|Ruhmkorff&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;]]&lt;/ins&gt;&#039;&#039;&#039; é um tipo de [[transformador]] elétrico  usado para produzir pulsos de alta tensão a partir de uma baixa tensão [[Corrente contínua]] (DC).  Para criar as mudanças do fluxo necessário para induzir tensão no secundário, a corrente no primário é repetidamente interrompida por uma contacto mecânico chamado [[interruptor]]. Desenvolvido no início de 1836 por [[Nicholas Callan]] e outros, a bobina de indução foi o primeiro tipo de transformador.  Eles foram muito utilizados em [[Raios X|Maquinas de produção de Raios X]]s, [[spark-gap transmitter|spark-gap radio transmitter]]s, [[arc lamp|arc lighting]] and quack medical [[electrotherapy]] devices from the 1880s to the 1920s.  Today their only use is as the [[ignition coil]]s in [[internal combustion engine]]s, and in physics education to demonstrate [[Faraday&#039;s law of induction|induction]].&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The term &amp;#039;induction coil&amp;#039; is also used for a coil carrying high-frequency [[alternating current]] (AC), producing eddy currents to heat objects placed in the interior of the coil, in [[induction heating]] or [[zone melting]] equipment.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The term &amp;#039;induction coil&amp;#039; is also used for a coil carrying high-frequency [[alternating current]] (AC), producing eddy currents to heat objects placed in the interior of the coil, in [[induction heating]] or [[zone melting]] equipment.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Calimero0000</name></author>
	</entry>
	<entry>
		<id>https://wiki.nivel-teorico.com/index.php?title=Bobina_de_indu%C3%A7%C3%A3o&amp;diff=10264&amp;oldid=prev</id>
		<title>Calimero0000 em 22h30min de 18 de março de 2015</title>
		<link rel="alternate" type="text/html" href="https://wiki.nivel-teorico.com/index.php?title=Bobina_de_indu%C3%A7%C3%A3o&amp;diff=10264&amp;oldid=prev"/>
		<updated>2015-03-18T22:30:32Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;pt&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Revisão anterior&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revisão das 22h30min de 18 de março de 2015&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Linha 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Linha 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{Ver desambig| para o tipo específico| Transformador| para o componente eléctrico mais geral| Indutor}}&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{Ver desambig| para o tipo específico| Transformador| para o componente eléctrico mais geral| Indutor}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Um &lt;/del&gt;&#039;&#039;&#039;bobina de indução&#039;&#039;&#039; ou &quot;bobina de faísca&quot; (&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[Arcaísmo|&lt;/del&gt;Arcaica&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;]] &lt;/del&gt;conhecida como um &#039;&#039;&#039;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;indutor&lt;/del&gt;&#039;&#039;&#039; ou &#039;&#039;&#039;bobina de Ruhmkorff&#039;&#039;&#039; &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;depois de [[Heinrich Ruhmkorff&lt;/del&gt;]]&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;) &lt;/del&gt;é um tipo de [[transformador]] elétrico  usado para produzir pulsos de alta tensão a partir de uma baixa tensão [[Corrente contínua]] (DC).  Para criar as mudanças do fluxo necessário para induzir tensão no secundário, a corrente no primário é repetidamente interrompida por uma contacto mecânico chamado [[interruptor]]. Desenvolvido no início de 1836 por [[Nicholas Callan]] e outros, a bobina de indução foi o primeiro tipo de transformador.  Eles foram muito utilizados em [[Raios X|Maquinas de produção de Raios X]]s, [[spark-gap transmitter|spark-gap radio transmitter]]s, [[arc lamp|arc lighting]] and quack medical [[electrotherapy]] devices from the 1880s to the 1920s.  Today their only use is as the [[ignition coil]]s in [[internal combustion engine]]s, and in physics education to demonstrate [[Faraday&#039;s law of induction|induction]].&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Uma &lt;/ins&gt;&#039;&#039;&#039;bobina de indução&#039;&#039;&#039; ou &quot;bobina de faísca&quot; (Arcaica&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;) &lt;/ins&gt;conhecida como um &#039;&#039;&#039;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;inductorium&lt;/ins&gt;&#039;&#039;&#039; ou &#039;&#039;&#039;bobina de &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[Heinrich Ruhmkorff|&lt;/ins&gt;Ruhmkorff&#039;&#039;&#039;]] é um tipo de [[transformador]] elétrico  usado para produzir pulsos de alta tensão a partir de uma baixa tensão [[Corrente contínua]] (DC).  Para criar as mudanças do fluxo necessário para induzir tensão no secundário, a corrente no primário é repetidamente interrompida por uma contacto mecânico chamado [[interruptor]]. Desenvolvido no início de 1836 por [[Nicholas Callan]] e outros, a bobina de indução foi o primeiro tipo de transformador.  Eles foram muito utilizados em [[Raios X|Maquinas de produção de Raios X]]s, [[spark-gap transmitter|spark-gap radio transmitter]]s, [[arc lamp|arc lighting]] and quack medical [[electrotherapy]] devices from the 1880s to the 1920s.  Today their only use is as the [[ignition coil]]s in [[internal combustion engine]]s, and in physics education to demonstrate [[Faraday&#039;s law of induction|induction]].&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The term &amp;#039;induction coil&amp;#039; is also used for a coil carrying high-frequency [[alternating current]] (AC), producing eddy currents to heat objects placed in the interior of the coil, in [[induction heating]] or [[zone melting]] equipment.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The term &amp;#039;induction coil&amp;#039; is also used for a coil carrying high-frequency [[alternating current]] (AC), producing eddy currents to heat objects placed in the interior of the coil, in [[induction heating]] or [[zone melting]] equipment.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Calimero0000</name></author>
	</entry>
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