15 years ago
it uses an NPN transistor array driven by a 3 terminal regulator.
The error drop is about 1.8 volts at 18 amps.
I would like to reduce the drop to .2 volts or less at 13.8 volts.
Vo is 0-20V Vin is 33V
I realize an opamp is probably the way to go, but I'm wondering is anyone
has a really clever high reliability circuit that they can point me toward.