[sdiy] Op Amp LED driver / Current Source problem/solution

[Neil Johnson]

> Thanks to everyone that chipped in on this - much appreciated.
>
> Here's what I'm going with for now...
>
> http://www.sdiy.org/juz/unipolar_2.png

I don't think you need R47.  The input bias currents are so small that
in this type of non-precision application you don't need to cancel
them, and this is not a low-distortion audio circuit so you don't have
to worry about impedance matching.

Neil
--
http://www.njohnson.co.uk