I meant waveforms so I can try and understand what the i/o is doing but thats helped thanks
Its been a while since I did math at school and I think my brain has seen better days, I'm messing with some simulated op amp circuits and Im trying tio work out Rout resistance. I have the voltage and the current, so I need do V/I but how do I work out 1uV/1.3mA?
Aren't OpAmps Class B (actually AB1)? They have a totem pole output stage which can actively both source and sink current. The output stage is biased so both transistors are lightly turned on, so if the output is unloaded, the quiescent current is small but finite. They have some crossover distortion.
Mikebits showed the circuit types that are used for Class B RF output circuits where the half-wave pulses are used to excite an RF tank circuit tuned to the output frequency.
The type of Class B circuit that MikeMl described are used in op amp output stages or in audio power amp output stages.
Mikebits showed the circuit types that are used for Class B RF output circuits where the half-wave pulses are used to excite an RF tank circuit tuned to the output frequency.
The type of Class B circuit that MikeMl described are used in op amp output stages or in audio power amp output stages.
They are the same thing, and transmitter stages are normally class C anyway.
It's purely a matter of biasing, the first diagram 'class A' is only class A because the output waveform shows it as such, it could just as easily be class B, depending on the base resistor values.
Aren't OpAmps Class B (actually AB1)? They have a totem pole output stage which can actively both source and sink current. The output stage is biased so both transistors are lightly turned on, so if the output is unloaded, the quiescent current is small but finite. They have some crossover distortion.