This circuit was found in Siliconix documentation from the 1980s. Equivalent operational amplifiers can be used and the output current is very low.
The purpose of this circuit is to eliminate RF picked up by a turntable. The circuit is from a...
This old circuit, found in a 1975 documentation, was designed to limit, and filter signals from...
This circuit can be implemented with common components operating with low-intensity signals. The...