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 Diagram. The circuit is designed such that only a portion of the 60Hz sine wave from the VARIAC 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.

Useful links to download:

    Speed 1254 kb/sBasic TRIAC Light Dimmer Circuit Diagram


   Speed 8987 kb/s[Verified] Basic TRIAC Light Dimmer Circuit Diagram


   Speed 2547 kb/sBasic TRIAC Light Dimmer Circuit Diagram Direct Download


Related Post

LM161|LM361 High Speed Differential Comparators Datasheet and Schematics
High-Reactance Autotransformer HID Ballast Circuit Diagram
1990 Toyota Supra MA70 Fuel System Circuit Diagram
Schmitt Trigger Circuit Diagram and Schematic
Two-transistor Lamp Flasher Circuit Diagram

Keywords:

    triac circuit,triac,dimmer circuit diagram,