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This little circuit can be used to dim lights up to about 350 watts. It uses a simple, standard TRIAC circuit that, in my expirience, generates very little heat. Please note that this circuit cannot be used with fluorescent lights.
| R1 | 1 | 50K Pot | |
| R2 | 1 | 15K 1/2W Resistor | |
| C1, C2 | 2 | 0.068 250V Capacitor | |
| L1 | 1 | Lamp To Be Controlled (up to 350 watts) | |
| L2 | 1 | Neon Lamp | |
| TR1 | 1 | 40502 TRIAC | |
| MISC | 1 | Case, Knob, Heatsink For TR1, Wire, Socket For L1 |
1. This circuit is for 117VAC only. 220 or 240 V will burn up the circuit. L1 can be a maximum of 350 watts.
2. The circuit must be installed and used in a case.