This circuit was found in a 1980s documentation for amateur radio. The circuit makes use of components of the era, but modern equivalents can be used.
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...