This circuit was obtained from Linear Technology documentation from the 80's. Powered by 5 V it can be used as a shield. The components are from the era.
This circuit was found in a 1967 US documentation. The circuit applies to modern general purpose...
This is an interesting idea that we found in the May 1971 issue of Radio Electronics magazine. It can...
The frequency range of this circuit depends on the transistors used. The circuit is from a Radio...