如何使用万用表

返回指南

英语

中文

上一步下一步

正翻译步骤 5

步骤 5

To complete your continuity test, place one probe at each end of the circuit or component you want to test.
As before, if your circuit is continuous, the screen displays a value of zero (or near zero), and the multimeter beeps.
If the screen displays 1 or OL (open loop), there's no continuity—that is, there's no path for electric current to flow from one probe to the other.
Continuity is non-directional, meaning it doesn't matter which probe goes where. But there are exceptions—for instance, if there's a diode in your circuit. A diode is like a one-way valve for electricity, meaning it will show continuity in one direction, but not in the other.
To check for this, reverse what the probes are touching and check for continuity. If the multimeter shows continuity, then it's possibly a diode.

Bold
Italic
Underline
链接
要完成一次连通性测试，只要将两支表笔碰触需要测试的电路或者元器件两端即可
Bold
Italic
Underline
链接
如之前提到的一般，如果您要测试的电路是连通的，屏幕会显示一个0的值（或者接近于0），并且万用表会发出“哔”的响声。
Bold
Italic
Underline
链接
如果屏幕显示1或者OL（开路），那就表示这个电路不连通——这意味着电流无法从一端流至另一端
Bold
Italic
Underline
链接
电路通断是无方向性的，这意味着哪个表笔在哪端都不重要。 但是也有例外，例如，如果电路中有一个二极管。 一个二极管就像一个单向阀一样，意味着它将在一端会显示通，而在另一个方向则是“没有”。

您的所有投稿皆享有基于开源创作共享许可协议（CC BY-NC-SA）的著作权利。

如何使用万用表

正翻译步骤 5

指南步骤编辑键盘快捷键：