On Fri, Apr 23, 2010 at 11:02 AM, Dario Greggio wrote: > That part is indeed a bit of cumbersome, Martin and Bob. > I may use a small DC-DC converter with a larger range. Again, I still > stress the point that I'd have liked this circuit to be more cheap and > "concise" as possible. > > thanks > You could use a 5.6v zener shunt regulator feeding an NPN emitter follower to get roughly 5 volts out. A small DC-DC converter is most absolutely not cheap. -- Martin K. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist