I'm studying the circuit block below in an Italian textbook, "Dispositivi e circuiti elettronici", by M. Gasparini, D. Mirri.
The circuit is called "single-ended push-pull with transformerless driver".
Without giving any comprehensive explanation, the book says that, if C2 is sufficiently high, then, dynamically:
- The potential on point B may rise higher than VCC
- The potential on point A' (which is very near to VCC in the quiescent condition), may increase by about VCC/2
Now, what is not so clear to me is how to clearly explain the 2 points above and, effectively, what is the push-pull operating class (A, B, or AB) in this condition?
I've searched in different books (and on the net) the above scheme, without finding any reference/explanation or what the circuit is called.