So amishx64 @ Reddit said they wanted a medium voltage, high amp regulator. Specifically, something to regulate 76 volts down to 70, and do so at a current of 8 amps(!).
( To buy or to build...Collapse )
That decided, now it was mainly just a question of using the classic negative-feedback regulator architecture and adapting it to P-channel MOSFETs. I'm pretty pleased with the resulting circuit:
Falstad Circuit Sim code: http://www.gully.org/~mackys/circuits/linreg-opamp.txt
( Read more...Collapse )