Home Projects Motor, light and power control TRIAC Light Dimmer

 

 

TRIAC Light Dimmer

source: http://www.aaroncake.net/

 

 

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.

Schematic

 

This is the schematic of the TRIAC Light Dimmer

Parts


Part

Total Qty.

Description

Substitutions

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

Notes

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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