TRIACs are electronic/ semiconductor devices equivalent to two silicon-controlled rectifiers (SCRs/thyristors) joined in inverse parallel, that is, once they are triggered, they continue conducting current until the current drops below the hold current, typically around the zero point (null) in the mains waveform.

TRIAC Light Dimmer Circuit Diagram The following schematic shows the Basic Light Dimmer . The circuit is designed such that only a portion of the 60Hz sine wave from the passes through the light bulb. To do this, a bilateral DIAC is used to control the current flow to the .

In this circuit design, the time constant can be seen as the 3.3k ohm resistor plus the value of the potentiometer times the 0.1uF capacitance. Thus, to control the intensity of the light, one simply controls the value of the resistance on the potentiometer, which determines the rate at which the capacitor reaches the break over voltage.

Related Post

AGP Interface Video Card Pinout and Connector
2002 Yamaha Bulldog BT1100 Starting Circuit and Wiring Diagram
Dave Mustaine Set, 1 Volume, 3 Way Switch Seymour Duncan Wiring Diagram
Magnetic Regulator (Regulated Lag) HID Ballast Circuit Diagram
Pontiac G8 Headlamp Wiring Fuse Relay and Circuit Breaker