The configuration shown was found in the October 1974 Radio Electronics magazine. The integrated circuit used is the CD4001 and the power supply depends on the application.
This power supply with several transistors can supply a current of several amps and a voltage of...
Found in a 1967 EEE, this circuit oscillates at 20 MHz according to the values of the given...
We found this circuit in a 1974 technical documentation. The circuit can be made with BC549...