I tried the solution mentioned here, and it only helped slightly. These speakers sound great, but the hum gets annoying to the point of me leaving the speakers off during normal operation. They hum, ...

We have received some initial reports regarding Apple's US $ 19.95 power supply replacement program intended to reduce excessive noise generated by Power Mac G4 MDD models. Mike Pickens says the ...

I'm trying to figure out a way to deal with a ground loop problem I have at home, this is 60hz mains hum that comes out of speakers, even when nothing is connected to the device besides power cable. I ...

Read the introduction to this series in Part 1, and the conclusion in Part 3, which covers stability. This is Part 2 of a three-part series which discusses how to properly test a DC/DC power supply to ...

This file type includes high-resolution graphics and schematics when applicable. Bob Zollo, Solution Architect for Battery Testing, Electronic Industrial Solutions Group, Keysight Technologies During ...

Working with Optical audio out There is an issue with the optical-out jack on the Power Mac G5 where short sounds don't appear to get passed though the optical connection, but longer ones do. A ...

During the design phase of a battery-powered product, engineers will need to qualify cells for suitability in the application. This testing often is done with dedicated cell test equipment, but ...