Found in a 1964 Electrronic Design, this circuit is intended to control analog video signals. The circuit has an attenuation of 45 dB at 20 kHz.
We found the configuration below, with unit gain, in the National Semiconductor Linear...
This circuit is from an Electronic Design from the 90's. The main integrated circuit is uncommon...
This circuit appears on this site from different sources. This is from documentation from the...