David Grant of ACT Meters provides a basic understanding of digital multimeters and how to use them to test alarm systems. He pays particular attention to safety The purpose of a multimeter is to ...

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.” ...

Hi everyone, Randy here again. I guess I'm not screwing up as bad as I thought because those magazine editors keep asking me to write another column. They said as long as I have something to talk ...

It is a device used to manage electrical flow within a system. In air conditioning units, it regulates the connection between various components, like compressors and fans, to control cooling and ...

Back in the early days of electricity, lab workers could measure electric current in a circuit using an ammeter (galvanometer) and voltage using a voltmeter. From there, they could calculate ...

Car batteries supply and store the electricity used in your vehicle. It can be frustrating to find out your vehicle's battery has failed as you’ll likely be unable to start the engine. Unlike far ...