When you need a multimeter for testing electrical equipment around the home, it's vital to know what all those symbols around the dial mean.

Measuring tiny differences in high-voltage circuits usually requires specialized differential test probes, which are often expensive. Fortunately, it’s possible to build your own high-voltage probe ...

They’re inexpensive and easy to use, and they help keep you safe when doing DIY electrical work. Solution: Test. Use. Verify. First, test the tester by holding it to a known live circuit, like a ...

The Las Vegas Raiders' offensive line was a mess in Week 3 and that has been the theme throughout the first three games of the 2025 campaign. Here's a look at who the biggest culprits were in the Week ...

The past few months have seen announcements of prototype electric vehicles that don’t use inverters to produce three-phase ...

The U.S. Consumer and Product Safety Commission announced a recall of more than 110,000 Paris Hilton Mini Beauty Fridges. The electrical switch of these recalled fridges can short circuit — causing it ...

Learn how to test a transformer: insulation resistance, TTR, winding resistance, polarity, continuity, and dielectric checks.

A ductless mini-split is a two-part cooling system, an outdoor condenser and one or more indoor heads connected by small ...

Also known as the thumb-palm test, the thumb test doesn’t necessarily indicate that someone currently has an aneurysm. Rather ...

In part 1, we examined the operation of power supply supervisory ICs that can detect when the supply voltage is too low, and ...

IJ's cofounder and longtime President and Board Chairman William "Chip" Mellor passed away last year. In his honor, IJ and the State Policy Network created the "Chip Mellor Prize for Excellence in ...

Major weather events like thunderstorms, floods and hurricanes can spark problems even after the storm passes. Here's what ...