The integrated circuit used in this circuit from a 1987 documentation is no longer common today. This circuit can generate a multitude of different sounds and this circuit is an example of application.
This circuit was found in a 1992 PE Hobbyst. The circuit detects the presence of spy...
This circuit is suggested by National Semiconductor and can serve as a basis for an excellent...
This emitter follower simulator circuit was obtained in a 1964 documentation. The circuit can be...