This circuit is the receiver for the transmitter from the previous project. We also found it in the Radio Electronics Experimenter magazine, 1989 issue.
Applying a 38 kHz signal at the input of this circuit (multivibrator) we can have stereo...
This is a factory circuit from an 80's manual. The circuit can be implemented with modern...
We found this circuit at Popular Electronics. The components are still current. Changes can be...