Monday, June 13, 2011

TRIAC Light Dimmer

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
C1       1        0.068 250v capacitor
C2       1        0.068 250v capacitor
L1        1        lamp to be controlled (up to 350 watts)
L2        1        neon lamp
TR1     1        40502  traic


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.


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