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事实上高频变压器严格来说具有一定的电感和电?/h3>
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<span>文章出处?a href=""><a href="http://cfdz.nsw888.com">深圳市晨飞电子有限公?/a></a></span><span>网责任编辑：<a href="http://cfdz.nsw888.com">NSW</a></span><span>作者：<a href="http://cfdz.nsw888.com">NSW</a></span><span>人气?span
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<p style="margin: 0cm 0cm 0pt" class="MsoNormal"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">众所周知?a href="http://www.chenfeipower.com/"><strong>高频变压?/strong></a>绕组从电路的观点来看是一个电感绕组，它具有一定的电感和电阻，然而，严格地讲还有电容存在。因为热河导体之间都客观上存在电容，只要有电位差，导体上就能储存电荷，电容的作用就会显现出来，由此可见，绕组之间、绕组与接地部分之间，甚至同一个绕组的层与层之间都有电容存在。这些电容的数值很小，常以微微法计，成为杂散电容或称潜布电容，这些电容值既难准确计算又不易测量?/span></p>
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<p style="margin: 0cm 0cm 0pt" class="MsoNormal"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">筒仓，在工频电压作用下，由于频率很低，杂散电容所表现出来的绕抗远远大于绕组的感抗和电阻。这时期主导作用的是电感，二电容和电阻都可忽略不计。因而电压的分布主要由电感决定，这就是我们通常所习惯采用的简化等值电路。如在直流电压作用下，电感的感抗等于零，这是的电压分布则完全有电阻决定?/span></p>
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