試電筆觸碰單切開關的內部線材,為何不亮 - 居家修繕
By Doris
at 2015-04-02T09:58
at 2015-04-02T09:58
Table of Contents
1.問題類型(a.規劃 b.修繕 c.知識 d.技術支援 e.其他) : (c)
2.問題描述(請詳述問題在哪):
我用以下這隻試電筆觸碰一個 110V 單切開關關電時內部一枚鎖固線材的銅質螺絲,
試電筆的小燈有亮, 表示有電. 觸碰另一枚鎖固螺絲, 小燈不亮. 這很正常,
(見以下開關內部圖.)
http://img.ruten.com.tw/s2/e/c9/c2/21211017039298_189.jpg
但是, 開關開電時, 分別觸碰那兩枚螺絲, 小燈卻都不亮. 為什麼?
既然兩枚螺絲都有電流通過, 小燈應該都會亮, 不是嗎?
開關內部見此圖: http://drkh.myweb.hinet.net/electricity_switch.jpg
--
2.問題描述(請詳述問題在哪):
我用以下這隻試電筆觸碰一個 110V 單切開關關電時內部一枚鎖固線材的銅質螺絲,
試電筆的小燈有亮, 表示有電. 觸碰另一枚鎖固螺絲, 小燈不亮. 這很正常,
(見以下開關內部圖.)
http://img.ruten.com.tw/s2/e/c9/c2/21211017039298_189.jpg
但是, 開關開電時, 分別觸碰那兩枚螺絲, 小燈卻都不亮. 為什麼?
既然兩枚螺絲都有電流通過, 小燈應該都會亮, 不是嗎?
開關內部見此圖: http://drkh.myweb.hinet.net/electricity_switch.jpg
--
Tags:
居家修繕
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