One of the simplest tasks a digital multimeter can perform is a basic voltage test on a car battery. Positive and negative terminals, hooked up to the car or not, will give a base number. The expected ...

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 ...

Why an auto-off feature wasn’t the first thing ... NPN transistor that can cut off the ground path between the multimeter and its battery. A tactile switch is connected to one of the external ...

A multimeter is an essential piece of equipment when you’re doing work on your car’s electrics. It’ll measure electrical values, which allows you to check a battery’s state, or keep an eye ...