This, dear reader, is the iDVM Digital Multimeter -- the world's very first iDevice-enabled voltmeter, from Redfish Instruments. Designed with auto technicians, electricians and engineers in mind, the ...

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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 ...

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.

My colleague, Martin Rowe, who is Senior Technical Editor of Test & Measurement World, just posted an interesting article that describes how to turn your iOS device (iPad, iPhone, etc.) into a digital ...

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 ...

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 ...

The instrument which probably the greatest number of Hackaday readers own is likely to be the humble digital multimeter. They’re cheap and useful, but they’re single-channel, and difficult to ...