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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> <font face="Arial, Verdana, sans-serif"> </font><span style="font-size: 16px; ">高频变压器的设计步骤一定要准确，不然是设计不出好的</span><strong><a href="http://www.chenfeipower.com/Products/gongzidianganDR3W.html"><span style="font-size: 16px; ">高频变压?/span></a></strong><span style="font-size: 16px; ">的。下面我们一起来看看都有哪些步骤?</span></p>
<p> </p>
<p><span style="font-size: 16px; "> 第一步：确定原边匝数，当然首先自己要选一款磁芯啦，设原边输入最低电压是VS导通时间用TON表示，还要自己设定一个磁芯振幅，一般我?.20.25T，因为正激变压器是不需直流分量的，所以相比反激而言这个值可以取大些，原边匝数NP=VS*TON/A E*B,其中A E磁芯截面积?/span></p>
<p> </p>
<p><span style="font-size: 16px; "> 第二步：画出原边电流波形，算出原边电流波形的效值，从而确定线径，因为电流波形是从副边感应过来?其波形就是电感电流波形开关管导通的那一部分，这个电流的波形的峰值就是电感电流峰值除以匝数比，这个会算吧，于是这个电流波形的有效?IP*V/VS*根号下的KRP平方/3-KRP+1*D>然后根据这个电流值去选线,电流密度同上?/span></p>
<p> </p>
<p><span style="font-size: 16px; "> 第三步：确定副边电流的波形，求出副边电流波形的有效值来，副边电流的波形就是开关管开通时候电感电流的那一部分，这个波形和原边电流的波形相似。因为原边电流的波形就是由这个感应过去的就不画了，其有效?IP*根号下的KRP平方/3-KRP+1*D依此去选线?/span></p>
<p> </p>
<p><span style="font-size: 16px; "> 第四步：确定自馈电绕组，一般其和原边同名端相反，利用磁复位放出电压感应出电压来，这样做的，还有一些其它方案，各位高手自已研究吧?/span></p>
<p> </p>
<p><span style="font-size: 16px; "> 以上就是设计正激变换器磁性元件的全过程，一环扣一环，紧密相连，认为思路还是比拟清楚的，防止了烦杂的公式，化难为?望同行们提点意见?/span></p>
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