This is the receiver circuit for the previous transmitter. The circuit has a programming key to decode the signals. This key must have the same transmitter code.
This circuit was adapted from an Italian publication that no longer exists. This is “Onda Quadra”...
This circuit was obtained in an Electronic Engineering of the 90s. The operational amplifiers and...
The basic component of this circuit is a general-purpose SCR. The voltage is according to the...