Hello Jinx, Sunday, August 11, 2002, 12:42:19 AM, ste napisali: >> I need a simple SCR or TRIAC based heater power control. I have >> heater of 2kW(220V~) and I want to deliver only 0 to 500W to it. >> >> anyone have a idea or link or anything that can help me? I think >> about optocupler with zero cross unit but I need help about that? Jinx> A couple of circuits here that should help Jinx> http://home.clear.net.nz/pages/joecolquitt/txless.html Jinx> For a heater you can count zero crossings and switch the element Jinx> on/off for whole cycles (not suitable for lights, too flashy). The closer Jinx> to the z-c ... Thanks Jinx now I will go to see what you suggest me! Anyone with more links, ideas?! I need this for 'yesterday'! :-) branek -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads