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我的帖子为什么没有人回答?



各位大侠:

      你们好!

      之前我询问了"UCC28019芯片做PFC电路.能否用升压线圈的次级绕组做辅助电源?目前我在升压线圈的次级绕组组成倍压整流电路作为辅助电源,但是不能正常启动工作",没有人回复,不知道是问题太幼稚,不屑于回答,还是我说的不清楚.怎么就没有人过问一下呢?