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.
We found this circuit in a Radio Electronics from October 1976. The components are still common, but...
Found in old documentation, this circuit is intended for low level amplitude modulation with low...
The integrated circuit used consists of an array of Darlington transistors for currents up to 3 A....