Re: How to test a voltage regulator

When test the voltage of a voltage regulator, we first check the voltage from the input pin to ground. This is to make sure that voltage is, in fact, being supplied to the regulator. If the regulator isn't receiving sufficient voltage, of course it will not be able to output its rated regulated voltage. This is why we do this test.

To test the voltage going into the voltage regulator, we take a multimeter and place it in the DC voltage setting. The DC voltage setting is the setting of the multimeter that has the following symbol or...