This frequency divider with SUS was found in General Electric's 1967 documentation. Similar configurations can be found elsewhere in this section and on this website.
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...