Found in an EEE this circuit uses FETs of the time and a bipolar one. Current equivalent transistors can be used.
This circuit was obtained in a Popular Electronics of the 90s. The circuit can be assembled with...
This CMNOS crystal-based circuit generates a 2 Hz signal. It was found in the October 1994 issue of...
We found this circuit in 1969 American documentation. FETs admit equivalents, as do transistors. The...