C1 function as a smoothing capacitor and *DOES NOT* place a part in the final frequency of oscillation.
The voltage across C1 rise above 3V on starting then drops back towards zero when oscillation starts. It is a DC level and not oscillatory. If at this instant(at about 100ms) I remove C1 and connect the PNP emitter directly to ground, the oscillation will continue as if nothing has changed.
The frequency of oscillation is about 50KHz, with large amount of second and third harmonics.
The voltage across C1 rise above 3V on starting then drops back towards zero when oscillation starts. It is a DC level and not oscillatory. If at this instant(at about 100ms) I remove C1 and connect the PNP emitter directly to ground, the oscillation will continue as if nothing has changed.
The frequency of oscillation is about 50KHz, with large amount of second and third harmonics.
