Found in a Westinghouse Silicon Power Handbook from the 60s, this circuit makes use of period components. Special high voltage transistors are used. Zeners are 15 V.
Hughes suggests this circuit in a 1968 documentation. The circuit uses old transistors that can be...
The simple circuit doubler shown here can source a voltage two times the one applied to the input. The...
You can change the output voltage of a fixed 3-terminal regulator using a zener diode. The voltage of...