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 ...

No, it's not the 10mm socket, nor the simple gadget that can keep you from losing one. Both could no doubt come in handy for just about any wrenching task, but the uniquely electric nature of ...

When working on electrical projects around the home—whether that’s troubleshooting an issue with your HVAC system, repairing an appliance, or testing a car battery—a multimeter is essential. These ...

A precision voltage reference is useful in the lab for checking your multimeters. This post describes the construction of a poor man’s precision voltage reference. It is great for checking any ...