This CMNOS crystal-based circuit generates a 2 Hz signal. It was found in the October 1994 issue of Electronics Now. The output signal is square.
This circuit was obtained in a 1978 magazine, but it can be easily assembled. What the circuit does...
With this circuit it is possible to use a pair of old telephones in a wired communication system. The...
This remote-control transmitter for the 27 MHz band was found in the November 1960 Radio...