>I hope you don't mind my nosy-ness, but this sounds like >quite an unsual application... I'm curious! :o) Sounds to me like a light dimmer or motor speed controller synced to = mains frequency. -- http://www.piclist.com hint: PICList Posts must start with ONE topic: "[PIC]:" PIC only "[EE]:" engineering "[OT]:" off topic "[AD]:" ad's