led dimmer circuit


Posted on Feb 7, 2014

Here is a very easy and useful schematic of an LED dimmer circuit. The circuit is using a famous voltage regulator IC LM317T. This IC can also be used as a current regulator, like it is used in the following circuit. In this circuit we have used 10 super bright white LEDs, but the number of LEDs can be increase if desired. The 200 ohms variable r


led dimmer circuit
Click here to download the full size of the above Circuit.

esistor is used to control the current or brightness of LEDs. The total output current of LM317 is 1. 5A, due to which we have used a separate current limiting resistor with each LED which will protect them on the maximum current output from the IC.




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