I always build 'em, usually in desperation when the old one quits. The last one I built I put in a canned 5V open frame power supply, rated maybe 5 amps, and a 0-24V supply built up out of a 24V 2 amp transformer, a PIC, a FET chopper arranged into a regulator. The output is metered with a DC digital voltmeter, and slew controls run the voltage up and down. The slew controls just adjust the digital setpoint of the PIC regulator. It is not very sophisticated but it has served well for a while. I have one half built that will do +70VDC, but haven;t needed it bad enough to finish it yet. I have a high current version at home that started out life as a battery charger. Makes a nice cheap chassis. -- Lawrence Lile Herbert Graf Sent by: pic microcontroller discussion list 04/22/2004 09:52 AM Please respond to pic microcontroller discussion list To: PICLIST@MITVMA.MIT.EDU cc: Subject: Re: [EE:] Power Supplies > I'm getting pretty sick of my LM317 adjustable power supply I cobbled > together when I first started with PICS, and am getting the urge for > something a bit more substantial (read "more than 100mA output. I don't > have much $ to blow on a fancy lab bench supply, and I really only need > +5,+12 volts. What do most of you guys use as a basic power supply for > cheap? I've done the same for the longest time, but finally settled and bought a cheap bench power supply: http://www.bgmicro.com/prodinfo.asp?sid=0410497685185185659563113&prodid=PWR 1166&page=3&cri=power+supply&stype=3&time_out=19:33 or http://makeashorterlink.com/?B17025918 It's a great little supply, and has done all I've needed it to do. Thanks, TTYL ---------------------------------- Herbert's PIC Stuff: http://repatch.dyndns.org:8383/pic_stuff/ -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics