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 circuit was found in a 1974 publication. It provides a tone indication of the temperature sensed by...
This circuit is intended for communications receivers. We can find it in a documentation from the...
This circuit matches a high impedance input signal with a low impedance output. This circuit is...