I think my math is correct but I am not sure. I believe all the info is in the image.
This is just a small part of a larger project, each one is actually driven from various switches and things, giving a indication of an input. The purpose of the transistor is to give the ability to disable / shut them off when not desired.hi,
As most of the LED's you are using at 2Vfwd, why don't you connect 2 off 2Vfwd in series when powered from 5V via a resistor, much more efficient.
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