Suggested by General Electric in a 1970 documentation, this circuit makes use of some components of the time, in the case of transistors. The circuit detects smoke by the transparency changing of the air.
EDN magazine in a 90's issue published this TTL technology debouncer flip flop circuit, in this...
Found in a 1968 Novel Electronics Circuit, this circuit compares two light intensities using...
This circuit may be used in IF steps of dual-conversion receivers, i.e., a type of receiver that uses...