From: Hotsolder - Electronics & Other Geeky Pursuits - Link.
How'd you like a high-quality regulated 5V and 12V bench supply for $8 or less? You have to build it yourself, but you won't even need a soldering iron. Sound interesting? Well, there is one small catch, but read on and you might find you have everything you need already on hand.
Many hams and electronics experimenters have PCs today. An increasing number of these are finding use on the workbench. Many hams program microcontrollers, use a PC-based oscilloscope, or just use the PC to control equipment around the shack. This is becoming even more practical as the resale value of computers keeps dropping. More and more, you'll find it hard to get rid of a PC when you upgrade. You might as well find a use it around the shack. Detail...
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