This circuit, which can act as a shield, was found in a 1970s American documentation. The configuration can be applied to modern equivalent integrated circuits.
This circuit has already been explored in other articles on this site. The high power is due to...
This circuit was obtained in a 1978 magazine, but it can be easily assembled. What the circuit does...
This circuit is from a 1988 documentation, but uses components quite common today. The circuit...