This servo circuit was found in 1969 Motorola documentation. Integrated circuits and transistors are types of the time, hard to find today.
The circuit is from an 80's publication, but the components are current, only special type diodes...
The maximum current of this power supply is 2 A and the output voltage can be set between 6 and 24 V. The...
This is a circuit of the 80's ON Semiconductor thyristor manual. Of course, the configuration can be...