Gate/Base Current Source

Gate/Base Current Source

While the overall purpose of this model is quite different, I'm throwing the remix flag on this one because I used...

LR44 / AG13 Battery Holder

... originally posted by jeplans on March 05, 2017.

https://www.thingiverse.com/thing:2155413

I changed his model a little, then buried it into mine.

This is a mounted, general purpose, stand-alone supply for tiny gate or base currents. Of course the ground of this circuit should be tied to the ground of the circuit it's supplying or the dreaded "...unpredictable results..." might occur.

I hate breadboards. Can't live without them; can't live with them.

A recent project involving some small thyristors required gate currents down around 100 uA (that's uA, millionths of an Amp). The components for that on a breadboard are pretty wonky - breathe on it, or even near it, and something opens or changes.

I've become a believer in general purpose "black boxes" with properly constructed soldered components for vario