This circuit was found in Siliconix documentation from the 1980s. Equivalent operational amplifiers can be used and the output current is very low.
This circuit is from Radio Electronics from April 1977. The circuit is for analog lines using...
With this circuit it is possible to improve the standing wave ratio (SWR) of a transmission system with...
This circuit was found in a 1982 Maplin magazine (England Component Store). The circuit has...