Mark Persons shares why a multimeter is his go-to instrument for initially figuring out what is going on or going wrong in a ...

A lot of farmers buy a voltmeter but never gain confidence in how to use it. Here are the basics: Plug the red test lead into the “positive” test port. Plug the black test lead into the ...

After initially working to create a modernized replica of a Czechoslovakian 4-digit Metra M1T242 voltmeter, [Jaromir Sukuba] figured that while he was at it, he might as well create a voltmeter that ...

The power supply on a computer transforms the alternating current from the wall outlet into a direct current flow that the computer's components can use. Testing the DC voltage output of the power ...

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 ...

Unsatisfied with the standard fare of soldering practice kits that offer little to no purpose once they’re built, [Jim Heaney] decided to take matters into his own hands and design an easy-to-assemble ...

The circuits were designed using two A/D converters to create a voltmeter and ampermeter. The circuits are designed with the combination of CA3161E and CA3162E to imposing a complete 3-digit display ...

Last weekend, I traveled to Michigan to help run the Cure For Gingervitis 24 Hours of LeMons race, and I packed a VDO 2-1/16-inch diameter voltmeter among the socks and cameras in my luggage. I'd ...

Christmas shopping for the electrical engineer who has everything? Well, chances are they don't have the Voltmeter Alarm Clock. Made by novelty electronics manufacturer Awkward Engineer, it looks like ...