this is a closed loop feed back circuit in order to make a precise current source.
my first question is about R23. haw much it should be? i think it is
better to just mounted a 0R resistor and reduce the error of voltage drop on this resistor due to Ib of op amp. but i'm not sure about this. i would be grateful for any advise.
my second question is about R15 and C11. these are not mounted . should i keep them not mounted?
