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.
Suggested by General Electric in 1965 documentation, this circuit controls the current at a load...
Found in Popular Electronics from the 1980s, this circuit uses two operational amplifiers from...
We found this circuit in a Hands-on Electronics from 1985. The circuit is based on common...