On 11/2/05, Olin Lathrop wrote: > Padu wrote: > >> I might put a decent buck regulator on the main board that produces > >> about 5.5 volts, then distribute that to each daughter board. > > > > Do you have any suggestions on which one? > > > > I liked the idea, since there is a big step down from 12V to 5V and > > energy is very precious in my application. > > My knee jerk reaction is something like the 5.5V power supply of the > QuickProto-01 (http://www.embedinc.com/products). You can see it on page > two of the schematic at http://www.embedinc.com/products/qprot01/qprot2.pdf. Olin, sheet2/7 from this design it's a very good prove about what is happening if a good software PIC programmer is designing hardware... Take a critical look to the Q6, Q4 and Q2 and see the redudancy. cheers, Vasile -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist