Halogen Lamp Dimmer Using Traic

Traic Based Lamp Dimmer (2)

Traic based Indecent lamp dimmer is a simple circuit doesn’t required additional power supply, works directly with 110V AC or 230V AC.

It is a low cost dimmer circuit for adjusting the light brightness of incandescent, Halogen Lamp, Light Bulb load up to 250 W.


  • Input supply: 230 VAC or 110 VAC
  • Output: 250 W
  • Triac controlled
  • On board Potentiometer for adjusting level
  • Power Battery Terminal (PBT) for easy input / output connection
  • Four mounting holes of 3.2 mm each
  • PCB dimensions 40 mm x 34 mm

Traic Based Lamp Dimmer (3)

Traic Based Lamp Dimmer (4)

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Traic Based Lamp Dimmer (1)




This kit consists of BT 136 Triac, resistors and capacitor.  CN1 connector is for Load connections and CN2 connector for power supply connections.


BT136: It is a sensitive gate Triac, used in general purpose bidirectional switching and phase control applications where high sensitivity is required.


DB3: It is a DIAC that functions as a trigger diode with a fixed voltage reference.  It can be used in conjunction with Triac for simplified gate control circuits or as a starting element in fluorescent lamp ballasts



This kit is used as a Light dimmer kit.  It is used to adjust the brightness of the Halogen Lamp, Light Bulb up to 250 W.  A power supply of 230 or 110 VAC is supplied to the kit at CN 2 connector and a light bulb is connected at the CN 1 connector.  Using the POT we can adjust the brightness of the bulb.


It is used to adjust the brightness of incandescent, halogen lamp, light bulb up to 250 W.

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