have somelink info: http://www.freewebs.com/acselectronics/buildregs.html switcher using LM317 -------------------------------------------------- From: "Jinx" Sent: Friday, June 13, 2008 5:35 PM To: "Microcontroller discussion list - Public." Subject: Re: [EE] Power supply project > What are your thoughts on the LM350 and LM317 ? I've got > a heap of them sitting around doing nothing except getting older > > The NatSemi Databook has several circuits using them combined > as adjustable current regulators, and other topologies sharing current > for higher outputs > > Now, for the measurement > > Setting voltage, piece o'cake > > Setting current. Hmmm. Still looking for a circuit that doesn't use > a meter > > Current isn't there until you use it, so I presume there would be > at least two methods > > (1) the pot used to set the current limit has a voltage across it that > corresponds to the current that needs to be set, and this voltage is > displayed in current terms. If selected digitally, transcription also > > (2) ganged pot, with one setting current, the other used for display. > Unlikely > > (3) ??? > > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist