Hello Everyone, I am trying to dim a 1w led (3v 350ma max) with a pwm signal from the arduino. I have a simple circuit using a 1k resistor on the base pin of a 2n2222 NPN transistor with the emitter connected to ground on the arduino and the collector to the negative terminal of the led. The positi…

Dimming 1w leds with transistor and walwart issues

John_Smith December 7, 2012, 9:06am 3

Is this 3v LED ok on 5v ?

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