On Sat, Oct 8, 2011 at 2:42 PM, Michael Watterson wrote= : > You don't need ANY inductors! Right. As Bob mentioned, an RC filter could be used instead of an LC filter. I am familiar with the RC filter network for more generic PWM, but as everything I saw WRT Class D amplifier design used LC filters, I figured there was some specific advantage to using LC over RC in this application. I probably should have thought to ask just was that was in my original post. Can someone enlighten me here? BTW, many thanks for all the great help here! -p. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .