Found in a 1966’s General Electric documentation, this circuit uses a triple diode from the time. The output current is 5 mA. It serves as a voltage reference.
Found in the July 1968 Supertena Bulletin of a Popular Electronics, this receiver makes use of the...
This switching source was obtained in a 1976 National Semiconductor manual. For the indicated...
This configuration appears several times on this site. The circuit can generate a 100 kHz or other...