This High Power LEDs up to 15 Amperes Circuit Diagram employs a simple scheme that limits the current flow to the LED, you can easily modify the schema, and can change the power just replacing the value of R2. You can use a DC source of any tensions between 9V to 15V.Para powers or other LEDs just use the approximate formula:
Current (I) = 0.8/R2 where I is the current specified by the LED manufacturer. Value of I this conductor is 10A. Use R2 = 0.8/Current formula (I) to determine R2.
High Power LEDs up to 15 Amperes Circuit Diagram
Parts List
Q1 2N3055 or similar NPN transistor
R1 1W 220ohms
D1, D2 1N4001 silicon diode or rectifier
See R2 power for each LED
R2 for 1W LED 1W 2.7ohms
R2 LED to 1.5 ohms 1W 3W
5W LED R2 to 0.6 ohms or 2 x parallel 1.2-ohms/1W
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