Hi everyone,
I am a circuits newbie, currently trying to build a circuit to drive several LEDs at a constant current. I have seen several sites suggest using a current mirror, but as far as I can see this can only be used when you want to drive all the LEDs at the same current. I want to be able to drive each individual LED stably at a different current, and be able to choose this current as precisely as possible. I was just wondering if anyone could suggest the most efficient way of doing this?
I would really appreciate any pointers in the right direction!
I am a circuits newbie, currently trying to build a circuit to drive several LEDs at a constant current. I have seen several sites suggest using a current mirror, but as far as I can see this can only be used when you want to drive all the LEDs at the same current. I want to be able to drive each individual LED stably at a different current, and be able to choose this current as precisely as possible. I was just wondering if anyone could suggest the most efficient way of doing this?
I would really appreciate any pointers in the right direction!