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 from Motorola is from 1968, appearing elsewhere on this site. The transistors admit...
This circuit was obtained from the 2005 Linear Technology component manual itself. The output...
Found in na 1970 EDN this circuit has a parallel regulation providing a symmetrical output of 15 V....