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thanks for reply, just 2 more questions, this circuit is better (dutty cycle/cost) than mosfet one you optimize, for a xmas light show? (I planned to run several hours)wich kind of lights can be used? normal classic ones? rice type? led type?note: I'll not put more than 2 strips together for each TIC206 part
can I use just one "bridge + 4N25 circuit part" to get the zero cross for supply the arduino, and then use separate MOC3021+TIC206 circuit part for dimming each light? or its necesary the whole circuit for each light?