Suggested by General Electric in a 1968 documentation this integrated amplifier uses a component of the era, the PA237. The circuit runs on 24 V and excites a 16-ohm speaker.
This latched alarm uses a double relay for this purpose and can control higher power external...
This circuit was found in an old American documentation on telecommunications. It is suitable for...
Taking advantage of the comparator setting, we can use the Norton amplifier as an over temperature...