Found in a 1970 documentation, this SCR bistable can be implemented with modern equivalent SCRs. Observe the controlled loads.
This simple three-LED sensor uses an NTC at the input. The circuit is based on an uncommon...
This circuit is from documentation from the 80s, so it makes use of an operational amplifier that...
This powerful transmitter for the 27 MHz band was found in a Japanese publication from 1961. The...