A power supply converts electric current from a source to the correct voltage, current, and frequency to power an electrical device. Knowing how to check your power supply is an important skill for any electrician or electronics enthusiast. A faulty power supply can damage your equipment, so it’s important to be able to identify and fix any problems.
There are a few different ways to check your power supply. One way is to use a multimeter to measure the voltage, current, and frequency of the output. Another way is to use a power supply tester, which is a specialized tool designed to test power supplies.