51 replies ! for a poor 5V power supply is quite good ! best, Vasile On 5/13/05, Olin Lathrop wrote: > Jinx wrote: > > No, I was alluding to what you said here - > > > > "On pretty much anything I've designed, the wall wart will be as > > simple as possible, and the smarts will be in the product" > > I agree with that philosophy in general. Somewhere you're going to have a > full wave bridge, some caps, and some form of regulator. You're going to > pay for these one way or the other. And even though wall warts are mass > produced, it's surprising how much more those with regulated outputs cost > over just bare transformers. It's usually more than the power supply in > the > product. > > Of course none of this should be a rule. There are always unique tradeoffs > for every product. A good case for a wall wart with a switcher is when you > need enough power so that a transformer directly from the AC line would be > too large, or universal input power is important. I think I'd still want > to > put a diode in there unless it's a high volume design. > > > ***************************************************************** > Embed Inc, embedded system specialists in Littleton Massachusetts > (978) 742-9014, http://www.embedinc.com > -- > 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