Russell McMahon wrote: > > > From: "Dave Dilatush" > > I wrote... > >See attachment. > > What attachment? I don't see any attachment... > > Oh, THIS attachment. That circuit is looking very cheap. Is 2.2mH enough? What speed does it operate at? It would be nice to be able to use one of those tiny 2.5mH inductors, the resistor sized green ones that are available for 20c each etc. I think a circuit similar to this could be adapted for low power use, ie 9v battery to 5v PIC applications, or 12v or 5v low power use. With that type inductor the thing would fit in about a 1.5cm x 1.5cm footprint and be very handy for some PIC applications. What would be great if someone could build and refine some, ready for any newbie to build, with a standard parts list etc. Like pre-made ones for: 9v to 5v, 0 to 10mA 9v to 5v, 0 to 25mA 12v to 5v, 0 to 10mA 12v to 5v, 0 to 30mA. I think within these small ranges the price, size and efficiency of each design could be optimised. I might have a bash at it this weekend. -Roman > --------------------------------------------------------------- > > Name: RPmodified.gif > Part 1.2 Type: GIF Image (image/gif) > Encoding: base64 -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu