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 basic configuration can be found in a lot of articles on this site. In this case, the relay...
This circuit is from American documentation from the 1980s. The transistors are general purpose...
The circuit is simple, as it uses only one transistor and a relay that can be MC2RC1 or MC2RC2,...