Two sensors are used in this simple remote-control circuit, one to switch on and one to switch off the relay. The circuit is from 1986 documentation. The transformer has 12 V of secondary.
Found in Motorola documentation from the 1980s, this circuit employs an integrated device from...
This simple regenerative receiver for the medium wave range is from a 1956 Sylvania publication. Details...
This bidirectional motor control was found in an 80's Electronic Engineering. The circuit uses a...