Description. This is a modification of the circuit Simple Lamp Dimmer/Fan Regulator previously posted here. The working of the circuit is same as that of the previous, but in addition a snubber circuit consisting of resistor R4 and capacitor C3 is included to improve the performance of the triac T1. A fuse is also included for better safety. I think this is the better circuit to try . Circuit diagram with Parts list . Notes. No matter how what ever may be the load lamp,fan , heater or anything it should be rated less than 200 Watts. No matter how what ever may be the load lamp,fan , heater or anything it should be rated less than 200 Watts. Assemble the circuit on a good quality PCB or common board . Almost all parts of the circuit are live with potential shock hazard.Be careful.