A customer recently called to ask questions about the electrical system on his machine. I asked if he had a voltmeter. There was a long pause, then he said, “Yes, but I don’t know how to use it.” He ...

Here, we designed an analog to digital converter circuit, working as a digital voltmeter using a low power three and half digit A/D converter ICL7107 having internal 7 segment decoders, display ...

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.

Anyone looking for a DIY project to keep them busy over the next few weeks might be interested in this very original and unique looking Voltmeter Clock that has been created by Instructables user ...

If you’ve never used a voltmeter to test electrical circuits on 12-volt farm equipment, cars or trucks, but wanted to learn, here’s how: Voltmeters cost from $15 to $300. $50 will buy an economy-grade ...