--===============1017049728== Content-Type: text/plain; charset="windows-1250" Content-Transfer-Encoding: 7bit I use a sensitive gate triac that fires in all four quadrants. The gate is held to ground via a .1uF cap, and fed from a PIC I/O pin via a 330 ohm resistor. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Any special measures ? Holding the gate with a low value resistor ? thanks, Peter P. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.463 / Virus Database: 269.5.9/773 - Release Date: 4/22/2007 8:18 PM --===============1017049728== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist --===============1017049728==--