Operating in class AB1, this high-fidelity amplifier was found in the 1961 RCA tube manual. The circuit has high input impedance and good gain.
This circuit is suggested by Texas Instruments in his Optoelectronics Sourcebook. The transistors...
This circuit is from an 80's American documentation. The circuit uses components of the time which...
I found this simple circuit from an English magazine from 1984. The circuit can be easily...