Re: tlug: shielding from high EM interference

["Stewart Dow" <stewart@example.com>]

Scott Stone <sstone@example.com>  wrote

>one of the support pillars in our office here (structural support) has the
>main power conduit for the building running through it.  Not usually a
>problem, but any monitor placed anywhere near it will flicker and 'waver'
>very badly from the EM interference, or so it seems.  Is there any kind of
>material we can buy to shield against this?
>


The kind of EM interference will probably be low frequency magnetic fields
from the current in the main power conduit. Unfortunately this kind of
interference is the hardest to shield - mainly relying on thick layers of
special steels - not really practical.   However as you probably already
know magnetic interference is very localized and can be best be avoided by
keeping anything sensitive a few feet away.




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