This filter was found in Exar documentation from the 1980s. The circuit has an attenuation of 60 dB at the selected frequency. The power supply must be symmetrical.
This circuit was originally used in a 1989 documentation presence simulator. The circuit activates...
The diagram of this source appeared in a 1982 American publication, drawing attention to its...
This circuit is from 70's documentation. The converter used is not a common component today. |...