I have a triac ( HTA06-600 ) from All-Electronics and I do not have the pinout. Is there anyway to determine which pin is the gate ; anode 1 and anode 2 ? I have a DMM , oscope and a triangle waveform generator. [ and other "stuff" ] Is the center pin likely to be the gate ? With enough drive current and voltage delivered to the gate , does it matter which is anode 1 and which is anode2 ? Gus -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist