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Re: faraday cage
Original poster: "Peter Terren" <pterren@xxxxxxxxxxxx>
I have an 8 foot cube Faraday cage that I used for a public display
at a Uni open day. It packs down into 8x4 sections and has a "door"
for access. Assembly is a tedious affair. Neverthe less it was being
run within 30m of a new multi-million dollar Cray computer so it had
to be electrically quiet.
The RF ground is the cage but you should also ground this to the
mains as well. I forgot and got a bit of stray current between the
cage and mains earth while running it.
Faraday cages of this type are not that good at stopping RF. Even a
$20,000 one for a Tesla coil at the science museum didn't stop mobile
phones for example. Nevertheless, fluoro lights wont light up outside the cage.
Mesh size is not critical in most environments. I use one that has 6
inch mesh size and one that uses small mesh of perhaps 2 inches.
Original poster: "Drake Schutt" <drake89@xxxxxxxxx>
..... Ive been searching through
the list archive for a little while and what Im wonder about now is
faraday cages. If i build a form out of small pvc pipe and cover
it with metal screen or chicken wire, and somehow attach a fat
ground connection to it will it work? Can i ground it to the same
rf ground as the seconday? How big can the mesh of the cage
be? (for a smallish 12/30 nst powered coil)