This is the traditional circuit from the 1980 racing video game with the AY3-6603-1 that we also published at the time in our magazines. This circuit is from the Radio Electronics magazine of August 1980.
This 1968 documentation circuit uses a relay to control loads up to 1 kW (depends on relay...
We found this conventional receiver circuit in a 1990 documentation. The circuit includes an audio...
This circuit for the positive front of a rectangular signal was found in an old documentation, but applies...