This bistable with two SCRs was found in the Radio Electronics magazine of June 1969. The circuit has a supply voltage according to the controlled load.
This circuit with 117 V output was found in a 1969 Electronic Design. Drive transistors admit...
This project came out in an article of mine (Newton C. Braga) in the Popular Electronics magazine of...
Found in an Electronic Design from the 80s, this single cell charger uses an integrated circuit...