Re: Coil size to faraday cage size ratio

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Peter Terren" <pterren1-at-iinet-dot-net.au> 

The science museum (Scitech) whose coil I upgraded has a Faraday cage which 
with support gear for interference suppression and switching cost around 
AUD$20,000.  It was formally tested originally for EMI many years ago on 
the original smaller coil and passed. They took a lot of care with edge 
seals to prevent the thin door gap being an antenna. The wire is quite 
solid as well.
http://tesladownunder.iinet-dot-net.au/Tesla%20display.htm
I have made one myself for a public display at 8ft per side cube of chicken 
wire and it prevented a fluoro light from lighting up, admittedly a very 
insensitive test.
http://tesladownunder.iinet-dot-net.au/tesla_coil_sparks.htm

Peter (Tesla Downunder)
http://tesladownunder.iinet-dot-net.au


Subject: Coil size to faraday cage size ratio
>Original poster: "Finn Hammer" <f-h-at-c.dk>

>I`ve had my OLTC coil tested for EMI, and since it exceeds the legal limit 
>a 100 times, inside a faradays cage with 50db damping. This corresponds to 
>a 4Km (3miles)radius inside which the legal limit is violated.
>I am going to need a better cage.
>Cheers, Finn Hammer