![](http://u.dianyuan.com/bbs/u/73/547821231987154.jpg?x-oss-process=image/watermark,g_center,image_YXJ0aWNsZS9wdWJsaWMvd2F0ZXJtYXJrLnBuZz94LW9zcy1wcm9jZXNzPWltYWdlL3Jlc2l6ZSxQXzQwCg,t_20)
变压器焊到PCB板后初级电感变大很多
我做得双管正激,主变压器未焊接前初级感量为16MH,焊接到PCB板后板测感量上升到78MH,但当把下图中两个续流二极管取下,感量降为22mH,为什么会有这种差异呢,百思不得其解,求教高手.谢谢各位啦~~~~~~
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![](http://u.dianyuan.com/bbs/u/73/547821231987154.jpg?x-oss-process=image/watermark,g_center,image_YXJ0aWNsZS9wdWJsaWMvd2F0ZXJtYXJrLnBuZz94LW9zcy1wcm9jZXNzPWltYWdlL3Jlc2l6ZSxQXzQwCg,t_20)