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82问答网 > 我用整流桥堆（KBPC3510）做一个交流220V到直流300V的整流电路，直流侧接一个470uf⼀450V的电容，桥堆烧坏

我用整流桥堆（KBPC3510）做一个交流220V到直流300V的整流电路，直流侧接一个470uf⼀450V的电容，桥堆烧坏

2025-04-02 00:59:18

推荐回答（3个）

回答1：

http://zhidao.baidu.com/question/256031959.html?oldq=1
AC220V整流后是DC310V左右,输出并联的电容要串联一个限流电阻再并一个放电电阻才行。不按这样接线电压会超过310V或到450V以上，电容一定炸

回答2：

KBPC3510假的太多，电容充电瞬间电流特别大。你的整流桥根本不行。

回答3：

你的分析对，整流管反向耐压低，220V*1.2=264V。用5408整流管电流可达3A

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