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How can I regulate the voltage to multi-color RGB LEDs?
I'm trying to add some cool color LEDs to my new motorcycle. I could buy some for hundreds of dollars or just build my own. I know how to wire it all up and have it turn on with a static voltage, but I'm throwing around the idea of adding multicolor LEDs. But I will need to regulate the voltage and give less for one color and more for another. I was thinking of just a manual turn dial, or even cooler would be an electronic one with a wireless remote, but I dont even know what they are called. If I knew of the name of the part, then i could search for what I want...Please help me!
If you use non-automotive led's then they would be used with a series resistor, with each led having a separate resistor. This resistor is selected so that the current is correct for the led being used when connected to a common voltage. That will take care of your voltage problem. No regulator is needed.
The resistor is calculated (using Ohms Law) by:
(Supply voltage - LED voltage)/ Current required for the LED.
Static voltage might not be the right word there, I think you mean fixed voltage?
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