This circuit is the receiver for the transmitter from the previous project. We also found it in the Radio Electronics Experimenter magazine, 1989 issue.
This step is also suitable for the AC188k and SK3004 transistors and was found in a 1980s...
Found in old American documentation, this circuit demodulates signals from 1 kHz to 10 kHz for...
This circuit takes advantage of the inductance of the phone in the resonant circuit. The circuit is...