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三级管用万能表怎么测

更新时间: 2020-11-03 00:00:00     

先将挡位打到×1k的欧姆档,一般中间脚为基极,所以先选择测左边的脚和中间的脚。左边黑表笔,右边红表笔,发现基本没偏转,交换表笔。左边红右边黑,指针有偏转。在有偏转的这一次,红色表笔记为N,黑色为记P,同样测量中间和右边,可以记得中间为P右边为N,结合上一步,中间为P,左边为N,可得三极管为NPN三极管,如果你的指针万用表比较高端一点,有测量三极管的挡位,选择hfe的挡位,插入三极管到测量孔里面即可。

关键词: 三级 管用 万能 怎么

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