Wednesday, February 14, 2018

Simplest Sound Reactive LED

This one is a good project for using with audio system or on the back of a TV. It will add some effect to the environment as the LED will keep on dancing with the Sound. The diagram will be very minimum so a very small amount of component is needed.

Parts List:

Transistor:
1 TIP35C with Heat sink.

Resistor:
1 22Ω
1 100Ω

LED:
5 LED of same Color.

Diagram:

 

Note:

1. You can use an OP-AMP as buffer for the input.
2. More LED can be used as well but you have to change the input voltage and current limiting resistor for that.
3. For parallel connection same colored LED has to be used as different colored ones usually have different forward voltage drop.

Datasheet for TIP35C.

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