This configuration was found in an English magazine from 1965. It is valid for any junction FET. The input impedance is 5.5 M ohm higher than conventional stages.
This is one of many possible configurations for this type of oscillator that generates sinusoidal...
This circuit of a few tens of milliwatts of power requires a single source. We found it in a Radio...
If you have an old cassette player or bought one from a junk shop, you can set up a small table...