This two-tone decoder has a bandwidth of 24%. The circuit is from a 1994 Electronics Now. The components without the value determine the recognized frequency.
) This circuit was found in a 80’s Popular Electronics. It issues a warning signal with the signal...
This circuit consists of a traditional amplifier version with complementary output using BD series...
The circuit below shows how to configure 3 gates of a 7400 to obtain a rectangular signal from a...