> Recycling is admirable, but I think you're trying to drive a screw with a > hammer. > At this power level I'd strongly recommend some type of switching regulat= or, > or even a switching pre-regulator if you have compelling reasons to use > linear. There's lots of good references about, look at "Roman Black's" > regulator circuit if you want a small discrete component design, or the > National Semiconductor "Simple Switcher" line if you'd rather have a cann= ed > solution. > > -Denny > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > http://www.national.com/ds/LM/LM117.pdf or make a switching regulator from a 317 as shown on page 19 :o) --=20 Jonathan Hallameyer --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .