The integrated circuit used in this application is uncommon today. The circuit is from American documentation from the 1980s. It can be changed to use more modern equivalent components.
With this shield circuit it is possible to control several loads up to 500 mA from the parallel port...
This low power circuit was found in a 1986 documentation. It includes tone controls, mixer, and...
This circuit was sent by our longtime collaborator, Adriano Muniz Moura – Pirapora-MG. The...