This interesting circuit from Radio Elecronics from October 1965 shows a flip-flop or bistable with SCRs simulated by bipolar transistors.
This bistable touch circuit using CMOS technology controls a relay. The supply voltage must be...
This project is from the book Science Fair Projects by Newton C. Braga. In it we have a relay that...
This circuit was obtained in an old documentation, but it is still current by the used components....