![](http://u.dianyuan.com/bbs/u/24/1101863024.jpg?x-oss-process=image/watermark,g_center,image_YXJ0aWNsZS9wdWJsaWMvd2F0ZXJtYXJrLnBuZz94LW9zcy1wcm9jZXNzPWltYWdlL3Jlc2l6ZSxQXzQwCg,t_20)
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请问此电路是用什么原理升压的.书上说.升压的高低是与三极管的驱动信号占空比有关.占空比越大.升压越高.与电感量没关系吗?
谢谢