I bought an HP programmable power supply about a year ago for $400 and it's terrible for trying to run a board on. It's got a range of 0-60v and 0-10 Amps. What it's great for is actually fine tuning and calibrating other pieces of test equipment because of it's accuracy. I generally use junky old linear power supplies that can put out about 5v at 13-18 amps. And then +12/-12v and -5v. You can also pickup switching power supplies from computers, but you have to make sure you put enough load on them or they won't power up. I think most people use switchers, I prefer the linear beasts myself. Mat _____________________________________________________________________ On Tue, 21 Dec 1999, tom mcclintock wrote:

Is there a way for me to make a suitable bench power supply for working on game boards? I'm not overly convinced that $300-$1,500 on a PS is absolutely necessary since the parts alone can't be more than $15 (that US money John ;)

I mean, just looking at the linear power supply boards in my games doesn't reveal complicated parts or anything that looks like it would require a high tolerance. Or am I too cheap?

tm