At 04:22 PM 11/30/00 +0200, Mark Hull wrote: >Hi Werner > >It's not easy to make a 'wound' inductor flat on a PCB. >Making use of the fact that all conductors have inductance, based on their >length and cross section, you lay out a PCB with a track length based on the >inductance you need. >Rule of thumb ids 1nH / mm, so a track 100mm long has an inductance of >100nH. >The track can be zigzagged to fit it into the required space, but according >to your earlier post, you need to fit 150mm of track onto your board for >150uH. Shouldn't this be 150 metres ? Best regards, =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Spehro Pefhany --"it's the network..." "The Journey is the reward" speff@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com Contributions invited->The AVR-gcc FAQ is at: http://www.bluecollarlinux.com =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.