Originally Posted by
Obi1
My first idea was to use potentiometers instead of serial resistances to adjust the resistance and thus the intensity of the individual colors. Simple and easy to do...BUT does not work quite as well in reality. On one hand common potentiometers are not designed to carry any power, else they get nasty big, on the other hand you need a high resistance in order to be able to fully switch off a LED, because these besties give out a decent light even with some tens of mAs. In this way I came to the idea to use a potentiometer to control the gate of a MOS Transistor.
Bookmarks