This circuit of the 80s makes use of an operational one of the time. It can be designed with modern operationals and must use a symmetrical power supply.
Found in American documentation from the 1990s, this circuit generates signals in the 350 to 500...
This instrument was obtained in a documentation for radio amateurs of 1976. The circuit measures...
This circuit was suggested by Motorola in 1980s documentation. The circuit employs an operational of...