Light dimmer circuit is used to control the lamp for arbitrary brightness. This dimmer circuit work for incandescent lamp, not a fluorescent one.  The dimmer circuit here work for both 110V and 220V AC.  Here is the schematic diagram of the circuit:

Dimmer Circuit

Dimmer Circuit

Dimmer Wiring Diagram

The dimmer circuit is wired in series with the lamp, you can say the dimmer circuits is installed in series with the lamp. Be careful that the circuit is not isolated from high voltage, so the potentiometer should be installed with plastic knob.  Don’t touch the circuit or you’ll be shocked by the electricity.

Dimmer Control

The dimmer control is done by the potentiometer, you need to turn right or left to adjust the lamp’s brightness.

Dimmer Switch

The dimmer circuit has no switch, you can see only a fuse for safety. You can add a switch in series with the fuse, or just insert this dimmer circuit between the existing swith and the lamp. [Schematic diagram source: sprags.com]



Possibly Related Articles:

  • Dimmer Switch
    This circuit is similar with our previous dimmer circuit, but the gate control is full-wave rectified using diode bridge. This circuit can be used to replace electric switch for your...
  • Soft Light Dimmer
    This is circuit of soft light dimmer. This circuit uses the IGBT STGP10N50A and the TS555 timer as main components. Here is the circuit: The timer is triggered on the...
  • Lamp Dimmer using 555IC PWM – Video Tutorial
    This video is a tutorial of lamp dimmer using PWM. This video shows the use of PWM for lamp dimmer. In this video, the PWM kit uses a 555 IC....
  • 5-Band Graphic Equalizer Circuit Using LA3600 Integrated Circuit Chip
    Using a special purpose single IC chip LA3600, we can build a graphic equalizer with low components count.  The internal design of the chip uses transistors gyrator circuit, with connections...
  • AC Powered-LED Circuit
    The high durability nature of a light emitting diode (LED) make it suitable for ON/OFF indicator application. Because the limitation on low operating voltage, LEDs are normally applied on low...