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 ...

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.

As cheap microcontrollers have given us an impressive range of test equipment trinkets to play with, it’s easy to forget some of the old standabys. A curve tracer for example, the relatively simple ...

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 ...

JACKSONVILLE, Fla. — Tropical Storm Humberto has formed in the central Atlantic about 600 miles east of the Leeward Islands. Models have Humberto curving away from the U.S., but Bermuda will need to ...