可控硅調光燈電路

可控硅調光燈電路-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.

Schematic

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.