The light dimmer circuit or fan regulator circuit  is used to control the brightness of the light or the speed of the fan according to our desire.

The objective of the circuit is to vary in intensity the brightness of the light bulb or fan speed by using a fixed source. There is no need to replace the bulb with a higher wattage one to do so.

 A simple Triac can do the work for you. Triacs are used in this circuit as a dimmer as they are easy to design and control, and are very much economic due to their high efficiency and low buying costs.

220 V AC Light Dimmer Circuit Diagram / Fan Regulator Circuit Diagram

This is the simplest Light Dimmer Circuit Diagram or Fan Regulator Circuit Diagram. The circuit is based on the principle of power control using a Triac.The circuit, and design are the same For Fan or Light the only difference is the output load to be varied, that is, fan or light.

 Assemble the circuit on a good quality PCB or common board. The load whether lamp, fan or anything should be less than 200 Watts. To connect higher loads replace the Triac BT 136 with a higher Watt capacity Triac. 

220 V Ac Light Dimmer Circuit Diagram

220 V AC Light Dimmer Circuit Diagram

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Parts List:

  1. Triac BT136
  2. Diac DB 3
  3. Capacitor .1uf/104  400V
  4. VR 500K
  5. Resistor 10K 1/4 watt or Higher
  6. Small PCB 

How To make Light Dimmer Circuit Watch This Video