schade feedback in push pull

[juma]

if we have Schade, do we still need the R2 of Zen V5?

R2 is Schade.
Please search the forum for O. H. Schade. It's embarrasing to use the word without knowing its meaning.

 

[thiagomogi]

I did not know that zen v5 was already schade. Sorry if I'm not as smart as you.

 

[juma]

I did not know that zen v5 was already schade. Sorry if I'm not as smart as you.

It's not about being smart. All it takes is some searching and reading.
Short version: in 1938 prof. Schade discovered that simple local feedback (plate to grid) turns the output characteristic of tetrode into triode looking one. That type of feedback is named after him.

 

[thiagomogi]

I think I did that, did not I?