This 1000: 1 voltage-controlled filter circuit was found in an Electronics Today International in a 1980s edition. The circuit is based on components of the time.
This circuit was suggested by Sprague Electric in an 80's documentation. The circuit uses a...
This micro AM radio will tune strong stations in the frequency range between 530 and 1,600 kHz....
The circuit shown in the figure generates a signal between 50 and 100 MHz and can therefore be...