This dual balanced modulator configuration was obtained in a 1980s telecommunications documentation. The circuit makes use of transformers and the diodes are commonly used.
This device can be used as a proximity arm, touch sensor or electronic bell. When connected to a...
This project, found in a 1981 documentation, consists of an interesting adaptation of the test...
This digital indicator circuit was found in the June 1988 issue of Radio Electronics magazine. The circuit...