Hi again i put a noise source and the copliitts oscilator work in multisim

In order to start an oscillator (in simulation) you also can switch on the power supplies at t=0 (otherwise, the simulator does not add any switch-on transient).

 

The waveform looks good! How fast does the oscillator start and reach the full amplitude?
I am asking because an un-distorted waveform is much easier to use, and one major author for ARRL publications always used an arrangement that had far too much feedback, so that it had to have a gate-voltage-clamp diode, and did not produce such a harmonic-free output. Of course, using a bipolar transistor also helps.
So thanks for presenting a topic that produced an interesting thread, but now provides a circuit others may use.