Found in a 1967 Electronics World, this circuit can use any modern equivalent FET. Observe the amplitude of the input and output signals.
The same basic audio oscillator as the CIR15855E can be modulated automatically by a relaxation...
This 1975 documentation circuit must use a 6 to 9 V symmetrical source and the signal cables must...
When the supply is established, the load only receives the supply some seconds later, a time that...