The maximum input voltage of this circuit is 20V and the output current is 250 mA. The circuit is from old documentation. The integrated circuit used is no longer common in our time.
This power source, obtained in a 1973 publication, suggests the use of partially burned germanium...
This circuit was obtained from an Electronic Design from 1964. Transistors admit modern...
The circuit is from the 1994 National Semiconductor Linear Applications Handbook but can be...