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 TTL circuit is from a Radio Electronics magazine from February 1973. The circuit must be...
Common operational amplifiers like the TL series, CA3140 and others can be used in this circuit...
This circuit uses only two common transistors and provides good audio power in a speaker. Readers who...