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电解电容用万用表怎么测极性

更新时间： 2020-10-26 00:00:00

有极性电容正向接时漏电小，反向接时漏电大，利用这一特点可用万用表来检测有极性电容的正负极。

方法是用万用表电阻档测电容的正、反电阻，电阻大的为正向，电阻小的为反向。

注意：在测量前用电阻或导线将电容上可能残留的电放尽。由于测量时是对电容的充电，电容的充电有个过程，所以读数要到显示基本稳定时读取。指针表的黑笔是正极经笔是负极，而数字表则相反。

关键词：电解电容万用表怎么极性

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