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Can someone help me with a circuit? Answered

im planning to make a light bar out of rgb leds. the basic idea i have in mind is that there will be a row of 10 rgb leds. the circuit will have a variable resistance for each channel ie red,green,blue. by varying the intensity of each channel i will be able to produce different colors. 
now the major issue is how do i connect the leds in series or parallel,which will be better to use with variable resistance. and how should i make the circuit so that i have one variable resistance for each color which controls the intensity on all 10 leds 




Best Answer 6 years ago

Use three circuits like this one. Without an idea of teh forward volt drop of each colour, I can't say whether it will work on your LEDs

Leds MUST be connected in series.

trimmable current source.JPG