At 05:27 PM 6/18/2003 -0400, you wrote: > > My guess is that in version 1.1, the anode of D1 connects to the > > collector of Q4. But that's just a guess. > >Oops, good guess. I breadboarded it right but drew it wrong. The >schematic at http://www.embedinc.com/pic/lvboost.pdf has been updated. I've done that before. The brain sees (and wires) the right circuit even if the eyes don't. ;-) Best regards, Spehro Pefhany --"it's the network..." "The Journey is the reward" speff@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.