A light Dimmer is a electronic circuit which permits the gradual dimming of lights. It is similar to a domestic fan regulator.
![](http://4.bp.blogspot.com/--WWWAKbsejI/VCFe4QrGrHI/AAAAAAAAH-M/yucI2bZeHNM/s1600/light%2Bdimmer.jpg)
Light dimmers are used widely in domestic and industrial lighting, in aircraft, etc. Light Dimmers can be used with incandescent lamps, Light Emitting Diodes, and compact fluorescent lamps.