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 ...

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 ...

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 ...

If you were to ask a random Hackaday reader what their most fundamental piece of electronic test equipment was, it’s likely that they would respond with “multimeter”. If you asked them to produce it, ...

HD Electric's DigiVolt Digital Voltmeter – Model DVM-25T - is a compact, high accuracy single-stick voltmeter with capacitive test point mode and ground lead. March 18, 2008 HD Electric’s DigiVolt ...

HD Electric Co.’s DVM-80T Digital Voltmeter & Phasing Set with Capacitive Test Point Mode is a new addition to the Digital Voltmeter line. June 19, 2007 HD Electric Company’s DVM-80T Digital Voltmeter ...