This circuit was found in a 1969 US documentation. It provides a signal that can be externally programmed as suggested circuits. The circuit can be used as a shield.
Suggested by General Electric in a 1967 documentation, this circuit replaces the Thryraton tubes used at...
This circuit found in a 1965 Electronic Design multiplies the frequency of a 400 Hz signal...
This interesting source, obtained in a 2001 catalog, can vary the output voltage between -16 and...