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 ...

Our hacker [John Duffy] wrote in to let us know about a video he put together to explain the design of his open-source multimeter, the HydraMeter. If you’re interested in how the circuitry for a ...

Max is an expert on all things gaming and gaming hardware, and writes across news, features, reviews, buyer’s guides and more. He is a magazine journalism graduate from City, University of London.

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 ...

Redfish Instruments, Inc. announced today the iDVM Digital Multimeter, the first iPhone-enabled wireless multimeter. The iDVM multimeter wirelessly connects to an iPhone, iPad, or iPod Touch via an ad ...