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RS sells a adjustable one #276-1778 can hit 3 v and regulate about 1 amp. Takes one or two fix resistor, a pot and two caps. I recomend some electrolitics over the disk caps they show. Around 100mf on output and same on input or something close. Since you want 3v out should feed it with about 4.5 to 5 or more. If you feed it with more than that add a heatsink to let it get rid of some of its heat it will burn off to get it down to 3volts.
Last edited by Nightwing; 10-04-2002 at 07:11 PM.
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