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Step 1 — 电路连通性测试
电路连通性测试可以告诉我们两个元件之间的电路是否连通:如果两个元件直接是连通的,那么电流可以自由的从两个元件之间通过。
Step 2
开始之前,请确认你要测试的电路处于非工作状态。请先将设备关机,拔掉电源插头并且卸下电池。
Step 3
打开您的万用表,并且将拨盘转动到连通性测试模式(是一个看起来像声波的图标)
Step 4
万用表通过其中一支表笔输出一个微小的电流,然后确认另外一支表笔是否接收到这个电流来测试电路的连通性
Step 5
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
Step 6 — 连通性测试(替代方法)
如果您的万用表没有专门测试连通性的模式,您依然可以执行连通性测试。
Step 7
万用表通过其中一支表笔输出一个微小的电流,然后确认另外一支表笔收到了多少电流来确定阻值
Step 8
Step 9 — 测量电压
接下来的四个步骤将告诉您如何测量电压。
Step 10
打开您的万用表,然后将拨盘拨至直流电压档(图标为带下划线的V,或者为符号 ⎓)
Step 11 — 自动量程电压测量
如果万用表是手动量程,请跳至下一步。
Step 12 — 手动量程电压测量
按照此步骤使用手动量程万用表测量电压。
Step 13 — 测量电阻
接下来的三个步骤将向您展示如何使用万用表测量电阻。
Step 14
打开您的万用表将拨盘拨至电阻值测试模式
Step 15
在两根表笔之间放入您想测量的电路或电子元件。
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