On Mon, 03 Sep 2007 08:12:34 -0700, Jim Thompson
wrote:

See attachment for a Sliding-Class-A output stage.

(from an S.E.D discussion)

...Jim Thompson


Whoa, an all-NPN opamp! One of the first integrated opamps I ever used
(I used to make my own, with discretes, on little pcb sips, which
weren't bad) was a GE part. It too was all NPN, but used a zener level
shifter, and was about as useful as a noise generator as an opamp.

Anybody got a datasheet on that?

John