Placed near a common receiver, this oscillator is intended to generate a beating signal to receive RTTY or SSB communications. The circuit is from old telecommunications documentation.
This circuit can be adapted to be used in a follow the line robot. It was found in the May 1962...
In the figure we have adapter circuits for using stereo headphones in an amplifier without a...
This circuit was found in a National Semiconductor manual from the 1970s, appearing in articles and on...