From what I have read, I understand that it is important to use a resistor in series with an led. The reason is that the led does not have a linear relationship between voltage and current. Without a resistor, the current has the potential to be too high and burn out the led. Led's have forward voltage ratings. I was wondering if you could tune your voltage supply to put out the exact forward voltage and not require the use of a resistor. The reason I ask is that I see people connecting high powered led's to variable power supplies with no resistors. It seems to work fine.
Is this a bad idea? If you were to eliminate the resistor with a high powered rgb would you have calibration problems in mixing the colors due to fluctuations in the current?
Thanks
Is this a bad idea? If you were to eliminate the resistor with a high powered rgb would you have calibration problems in mixing the colors due to fluctuations in the current?
Thanks