I have a waveform selector circuit shown above. The input signal is a 1 kHz alternating Square wave with a pk-pk value of 8.5V (above the x-axis).
The output waveforms in order starting from the left is a square wave, sawtooth wave, triangle wave and sine wave.
I want to calculate the theoretical voltage value of the sine wave (fourth switch from the left). I tried writing KVL equations but the circuit has a feedback capacitor on the collector terminal of the transistor. How do I calculate the output voltage?