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 wide-range radiation monitor was found in a 1980s documentation. The circuit uses a diode as a...
We found this configuration in an American technical documentation of 1977. The circuit can...
This circuit was obtained from a Philips documentation from 1970. It can be built on modern...