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by cadstarsucks
Sat Jan 14, 2006 6:20 pm
Forum: General Discussion
Topic: "Perfect" LED current limiting challenge
Replies: 255
Views: 66290

Re: "Perfect" LED current limiting challenge

Well you could use a single transistor with two resistors from the pwm output and an emiter resistor but you still have the efficiency problem.

With a PIC you could feed back the emiter current to the onboard comparator and use it with an inductor for a peak current boost triggered by the PIC.