This circuit was found in a 1970 American publication. The FETs are power types according to the desired output current. The operational can be replaced for modern equivalents.
We found this circuit in a technical documentation from the 70's. Any double-gate MOSFET can be...
We found this thyristor power supply in a 1987 documentation. It uses common SCRs as rectifiers and...
This simple circuit has its trigger point set in the trimpot. The transistor can be any general...