Details: I try to build the single TRIAC circuit for ON/OFF, Dimmer(600W AC Light), and AC fan Speed Control. I trying this the first time. Problem: I using MOC3041 to control the TRIAC ON/OFF it seems to work fine but while I Tried Dimming I found using MOC3041 cant able dim the lamp due to Zero crossing in the MOC3041. Now I try to change MOC3041 to MOC3052, Please clarify to me what are the things I need to take care of before proceeding. What will happen to my switching if I change MOC3041 to MOC3052? Note: snubber Circuit value - Rs-50E/1W, Cs-0.01uF/400V Thank You.