I had already found the Mike Pearce article, the circuit looks like its TRIAC only even though the code will work with both. I have had another good look on the net for the IGBT / FET version of the schematic but its proving to be elusive. Thanks for the pointer to http://www.microchipc.com/sourcecode/ there is heaps of good stuff in there :) regards Lee McLaren -----Original Message----- From: pic microcontroller discussion list [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of cdb Sent: Sunday, 4 April 2004 9:54 AM To: PICLIST@MITVMA.MIT.EDU Subject: Re: [EE]: Reverse phase dimmer circuits On Sat, 3 Apr 2004 13:04:48 -0700, Michael C. Reid wrote: ::He does not ::have the schematic. Actually Mike, the second program name (the long one) does now include the schematic. Also of interest would be the MOSFET and SCR manuals from Phillips that show how to use a MOSFET as an AC rectifier. Colin -- cdb, bodgy1@optusnet.com.au on 04/04/2004 I have always been a few Dendrites short of an Axon and believe me it shows. Light travels faster than sound. That's why some people appear bright until they speak! -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details. -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body