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简说共模电感选型取值问?/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> 近来，有些客户会在合作之前有很多问题自己解决不了，特别是?a href="http://www.chenfeipower.com/product/product-0001,0004-1.shtml">共模电感</a>的选型上，今天就由深圳晨飞电子的小编来简单说一下共模电感的选型取值问题：共模电感选型取值问题，通过资料了解到公式Lc=?/2πFr,cm?sup2; x ?/2Cy），其中Cy可自己先确定，但是Fr,cm(共模的转折频?如何确定呢？ <br />
1、是不是一定要测出不加EMI电路前的噪声图谱，才能进行计算？<br />
2、倘若已算出电感值Lc，然后根据已知的电流有效值，如何进行磁环的选定以及绕线材料、匝数的确定呢？<br />
3、一般大功率的开关电源上的共模电感用的都是绿色的磁环，请问这种磁环是铁氧体吗，有没有这种磁环的选型指南或者型号大全呢？ <br />
根据以上这些常见的问题，小编简单跟大家简单说一下：<br />
1、原理上来说，滤波器的设计就是根据噪声频谱来确定，但是实际工程我们不这么折腾，最常见的方法是根据类似设计的产品确定一个大概的<a href="http://www.chenfeipower.com/product/product-0001,0004-1.shtml">滤波?/a>，然后测试看结果进行设计和调?br />
2、共模电感的感量决定了你需要选择的材质和匝数。噪声频谱也决定了你的材质选择，也就是确定你的电感在该噪声频段阻抗足够抑制该噪声?br />
3、此外还需要注意共模电感的差模分量，在大功率场合要核算最大电流下该差模分量是否会导致饱和?br />
都看懂了吗？其实是选型这些最主要还是根据你的电路图来的，当然跟你电感量等也有关系，如果你还比较纠结，只要你手上有电路图，晨飞电子就可以帮你选型。想<a href="http://www.chenfeipower.com">订制共模电感</a>，你也可以通过该网站右侧的商桥进行在线咨询。在这里，小编向你推荐一篇共模电感在制作时应该需要满足什么请求（http://www.chenfeipower.com/Article/gongmodianganzaizhizz_1.html?/p>
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