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 New Microchip development board is targeted to designers who work with 16- and 32-bit PICs....
Found a documentation on PCs from 1996, this circuit can be used as a shield. The relay is rated at...
This circuit is from a Japanese magazine of 1973. The circuit is designed to withdraw the power...