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.” ...

We earn commissions from purchases you make using links in our articles. Learn more. Anyone who works on their car should have a multimeter, but they come in handy around the house too. Whether you ...

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 ...

The iPhone democratized photography and disrupted the video and camera industry. Now a new product that plugs into the iPhone’s Lightning port aims to replace an important photographer’s tool — the ...

How do you know if a resistor is correctly restricting the flow of electricity? Using a multimeter is an obvious answer. However, there is more to it than meets the eye. This article will explain what ...

Q: I have a tenant who complained that a light fixture wouldn’t light. After I replaced the switch, the light still wouldn’t come on. I realized that all the bulbs were out. Anyway, is there a way to ...