Spehro Pefhany ha scritto: > The LDO is the way to go, maybe with a dual Schottky diode (eg. BAT160) > so only two parts total plus maybe a cap or two. > > Keep in mind that if both power sources are present, and both are (nominally) > 5V, either one or both may be supplying current. Yes, but .. ah ok: you mean: 1) Dual Schottky 2) LDO 3) cap (already there anyway) thanks again -- Ciao, Dario -- Cyberdyne -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist