Ron H said:
Jrz126, this is a push-pull emitter follower, but it only works well for analog signals if you keep the input signal range well within the collector supply voltages (+/-5v in this case). It will have significant crossover distortion unless it is embedded in a feedback loop containing a fast slew rate op amp. As a stand-alone circuit, it is good for driving heavy loads with digital or switching inputs.
In my circuits lab, we had a +/- 15V on the ends of the transistors, so I guess it worked out ok. the way we did it was, we had a D/A converter hooked to the audio out of a cd player, then we converted it back. It was only 8-bit D/A, so it didnt sound that good anyways.
but anyhoo, when Vi is equal to -10V, would the PNP transistor be in saturation mode?