One of the interesting things about living in modern times is that a confluence of the Internet and rapid changes in the electronics industry means that test gear that used to be astronomically priced ...

I have a power supply that quit working. It's in my HP media center and is a proprietary design, so going out and getting a replacement is next to impossible. I tried calling HP to order the unit, but ...

[OZ2CPU] has an HP power supply that is about 30 years old. It looks brand new, though, and has three outputs and includes tracking for the adjustable positive and negative supply. After a quick demo ...