This video covers the essential steps to properly test a car's alternator and diagnose common alternator issues. The guide ...

Voltage Drop - This test is used to identify the location of circuit resistance. Additionally, the test is performed to measure the amount of voltage consumed or lost by a component or connection.

In fact, it's our pick for the best general-purpose multimeter. This no-nonsense unit can measure AC and DC voltage, DC current, electrical resistance and even has a continuity meter.

Testing the DC voltage output of the power supply using a digital multimeter can help you isolate any potential issues and determine if you have a bad power supply.

When you measure a voltage, how do you know that your measurement is correct? Because your multimeter says so, of course! But how can you trust your multimeter to give the right reading? Calibratio… ...