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

We have all had difficulty testing diodes in-circuit. Most DMM’s have a diode Vf function that measures forward drop, but what is the normal voltage drop? Analog VOM’s attempt to measure resistance of ...

Someone came to me just recently to discuss a power supply problem in which one particular diode would fail shorted following a mechanical drop test of the unit. Over and over again this would happen.

The single-stage rectifier circuit is used again to test the diode performance at high frequencies. Figure 3e shows the output voltage versus frequency at different input signal strengths.