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如何用万用表测光管的好坏

更新时间: 2020-09-24 00:00:00     

方法步骤如下:

1、将万用表上的旋钮拨到二极管档,并将红黑表笔插在万用表的正确位置。

2、观测节能灯管,有四脚和二脚两种,测量时若是四脚则选测中间两个脚。将红黑表笔分别接触到所需检测的两个引脚上,若有蜂鸣声且万用表红色led灯亮,则灯管好,否则灯管已坏。

3、测量时若是二脚,则拆开灯头,会发现有四根导线,之后的测量法与四脚灯管一样。

关键词: 何用 好坏

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