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万用表如何测量LED灯好坏

更新时间: 2020-09-23 00:00:00     

万用表测LED灯好坏的方法如下:

1、将万用表上的旋钮拨到二极管(蜂鸣)档,并将红黑表笔插在万用表的正确位置;

2、观测灯管,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,之后重复步骤二即可。

关键词: 如何 测量 led 好坏

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