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85问答库 > 请问一下有些电容表面没有注明多少容量怎么看呢？9怎么用万用表测量好坏呢？

请问一下有些电容表面没有注明多少容量怎么看呢？9怎么用万用表测量好坏呢？

2025-03-16 17:20:43

推荐回答（2个）

回答1：

由于电容器的种类很多，单一靠体积外观是无法到断其容量的。同一类电容器可以通过体种来对比判断（电容量与极板面积成正比）。用万表测电容器好坏是利用其充放电特性来判别的，电阻档正负表笔各搭接电容器电极一次，看充放电现象是否明显。电容器容量一般用电容表测量。

回答2：

普通外用表只能量出电容是否存在内部短路，容量是量不出来的，要用数字万用表的电容档或者专门的电容仪来测量电容。

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