Led drivers circuit electronics projects

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Led drivers circuit electronics projects based on IC. Led drivers projects like: constant current led driver, high power led driver, white led driver, led backlight driver and more .

LM317 constant current source

This LM317 constant current source circuit is using transistors and can be used as a driver for LED strings.

Circuit Diagram: 
LM317 constant current source circuit for led driver

Bicolor LED driver circuit

This bicolor led driver circuit allow driving a bicolor LED that changes color light depending on the supply voltage.

Circuit Diagram: 
Bicolor LED driver circuit

LED flasher circuit diagram using transistor

Using this circuit diagram can be designed a very simple LED flasher that can be used for example to simulate the existence of car alarms mounted on a vehicle.

Circuit Diagram: 
LED flasher circuit diagram using transistor