Henry
Since you like diagrams ...
An unbypassed cathode resistor grounded cathode
circuit is like a split load phase splitter
without using the cathode output of course.
The tube produces a signal on the plate
and on the cathode and since the cathode
signal isn't used it is "wasted".
It is degenerative with respect to the grid
but at no time is the plate signal
fed back to the input which is the grid.
Since there is nothing being fed back
then it should not be called feedback.
>> This means the feedback signal is
>> sampled from the output current
>> and summed with the input voltage.
The grid signal is amplified by the tube
and the tube produces a signal on the
plate and the cathode so where is this
so called "sampling" taking place?
The cathode signal is subtracted
from the input signal not summed.
You make it sound like there is some
time delay when it's simultaneous.
The tube is producing both signals
at the same time so there's no delay.
I agree with the effects though.
DanL
