help led driver?
ok so i have 3 leds in series but in total i have 4 sets of these. the ma is 20 and the volts is 3.4 or 3.6 on the led and i want to run it at 12 volts with 6800ma. what i want to do is build a driver to regulate them so they wont burn out fast. so i want to know how to build one and what i need.