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Richard Harrison wrote:
A Faraday screen, shield, or cage is a network of parallel wires or strips connected together at one end but disconnected from each other at their opposite ends. I`ve worked at several broadcast stations which used Faraday screens The special comb-like structure that Richard describes, which is deliberately constructed to block electric fields but transmit magnetic fields, is normally called a Faraday "screen" - but not a cage. The term Faraday "cage" is reserved for a complete conducting enclosure that blocks both electric and magnetic fields from entering the interior. The rest of the discussion is about how well an incomplete or penetrated enclosure might work as a Faraday cage. -- 73 from Ian G3SEK 'In Practice' columnist for RadCom (RSGB) http://www.ifwtech.co.uk/g3sek |
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