Faraday Cage

Aug 10, 2005 2 Replies
R

im having problems with my CRT monitors. they flick ( checked couple units ) I live next to street power line. ( my wall on 3rd floor is couple feet from it ) dont flick on 60Hz refresh ratio but higher yes- badly.


120 Hz is small but ennoying flicking only ( image looks blury )

Is there a way to shield my monitor from it? Will socalled Faraday Cage solve the problem? Mumetals? They're expensive.



I have a gaussometer EMF reading read by a specialist from my gas electr spupplier



here it is -

formatting link



i have almost 12 miligausse in my place - how to lower it in a cheap way?



i dont want LCD minitor



Any links to EMF shields suppliers?



BTW - checked all other factors ( no magnetic sources around no electricity problems and my next door neighbour has the same think with his DELL monitor)



Tom


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T

Mu Metal is the generic name for for a high-permeability, magnetically "soft" alloy used for magnetic shielding. It includes about 80% nickel and 15% iron, with the balance being copper, molybdenum or chromium, depending on the recipe being used.

I have seen shielding boxes for industrial monitor made from mu metal advertised by some company. Those coudl help somewhat.

Most propably not. Faraday Cage is designed to shield against electrical fields. It is good at that, but not effective against low frequency magnetic fields.

Mu metals are one option.

Sometimes just normal iron/steel sheets can help.

I have no links to give.

Tomi Engdahl (http://www.iki.fi/then/) Take a look at my electronics web links and documents at http://www.epanorama.net/
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