15 Dec
2011
15 Dec
'11
1:54 p.m.
> I considered trying to build some kind of AGC for
it, [...]
Perhaps an incandescent light bulb might help out there. =3D)
Perhaps. But it
requires enough current flowing in the feedback divider to
warm the bulb's filament significantly. I'd rather avoid
dissipating that much power - not to mention that I'm not sure the
op-amp I was using was capable of it.
There are some pretty low current light
bulbs (such as ones that glow
to their specified intenisty at 20ma (with 6V across them).