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.
The FET used can be an equivalent like the BF245 or MPF102 and the operational one also admits an...
This circuit makes a very fast switch when receiving an input signal. The FET can be BF245 and the...
This tone control was obtained in a Signetics documentation of the 90s. The integrated circuit can be...