電錶的使用? - 居家修繕
By Sierra Rose
at 2014-12-01T19:32
at 2014-12-01T19:32
Table of Contents
https://www.dropbox.com/s/lxis3hh6skavtlb/IMG_0013.JPG?dl=0
這是我家的三用電錶
我不了解的是6點鐘方向的蜂鳴功能
我把紅線和黑線分別插入單切關關的上和下孔~
開關打開後~會叫
所以這功能是用來檢測是不是形成一個迴路?
可是我如果把它調成量歐姆的20K
然後一樣的動作~而顯示為0.00
不也是代表形成一個迴路?
我的認知有錯嗎?
PS.我本來以為蜂鳴的用法是只接紅線...如插入牆上火線孔~就會叫
用來檢測火線用的...
但實驗後沒結果...
這個本來以為是錯的...沒錯吧~
謝謝
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Tags:
居家修繕
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