While using a digital multimeter to diagnose electrical problems on customers’ equipment, I frequently hear the comment, “I’ve got one of those multimeter things, but I never learned how to use it.” ...

Let's start with DC voltage, one of the simplest and most-used multimeter measurements. The DC voltage measurement is used to determine the difference in electrical potential between two points in a ...

Using a digital multimeter (DMM) to verify that a circuit is de-energized is a good safety practice. Let’s walk through the steps Carl takes before replacing a motor starter. With this test, he does ...