This circuit was suggested by Texas Instruments in a 1968 publication. The transistors are of the time, and modern equivalents can be used.
August 2017 - Amphenol's high-speed cables are available from Mouser Electronics in various...
This circuit was obtained in a 90’s Popular Electronics. The frequency depends on C1, a component...
This filter, from an audio publication from 1977, passes the frequency range corresponding to the...