"Mike Rivers" wrote in message
news:znr1120170690k@trad...

I was wondering about that term "local feedback" too. It sounds like
one of those terms coined by the same folks who talk about LDC and
SDC. Is it some hip name for not bypassing the cathode resistor?

In standard parlance, yes. I'd call the single-stage "anode follower"
(resistor from the output side of the plate coupling capacitor back to the
grid, another resistor from the grid to the input) global feedback even
though it's around a single stage, whereas an unbypassed cathode resistor is
local.

Peace,
Paul