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.
July 2017 - The Texas Instruments step-down converter module of the same name IC can now be...
This circuit was obtained from an English magazine from 1980, but as it uses components that can...
This circuit was found in old documentation, but the transistor may be the modern equivalent BC547....