This complete video game circuit was found in the May 1978 issue of Radio Electronics magazine. The circuit includes the power supply and timing based on the MM5710N.
This simple teaching circuit uses 5 transistors in a monophonic organ version whose notes are...
This capacitive switch or approximation relay was found in a 1980s US publication. Power should...
This electronic siren circuit, found in a 1982 documentation, uses three oscillators mounted...