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.
The circuit shown is from an old European publication. In it we have the way to activate a relay...
We found this circuit in a European publication from the 1990s. Transistors are still common types...
This circuit was found in an American documentation and can be added to common amplifiers of any...