Tweakers' Asylum

• If the chassis is metal - unclestu 12:32:49 01/12/11 (1)
  In Reply to: RE: There posted by benie on January 11, 2011 at 05:08:23

  the copper screen would do very little. It is the seams where you need the shielding.
  
  A copper screen lining would reduce the eddy currents generated by the electrical pathways. Counterpoint had an excellent white paper as to why they would copper plate their component chassis even though they would paint the copper over for cosmetics. RFI was not a factor for them.
  
  Stu
  

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  • RE: Thanks!! (nt) - benie 14:22:05 01/12/11 (0)
    In Reply to: RE: If the chassis is metal posted by unclestu on January 12, 2011 at 12:32:49

    nt
    

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• RFI fabrics - Mike B. 11:07:18 01/11/11 (3)
  In Reply to: RE: There posted by benie on January 11, 2011 at 05:08:23

  I found an interesting site that sells several varieties of RF blocking fabric. It is a finer weave which would be an advantage. You need to imagine submerging your component under water and how water would enter the enclosure. That gives an idea of how RF can enter.
  

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  • RE: OK ! - benie 13:51:50 01/11/11 (2)
    In Reply to: RE: RFI fabrics posted by Mike B. on January 11, 2011 at 11:07:18

    Now I can get a picture , of what you mean.
    Can you share a link to the website, if possible.
    
    Thanks!
    

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    • RE: OK ! - Mike B. 16:25:25 01/11/11 (1)
      In Reply to: RE: OK ! posted by benie on January 11, 2011 at 13:51:50

      here you go

      • Fabric   (Open in New Window)

      
      

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      • RE: Great Site ! Thanks ! (nt) - benie 00:28:48 01/12/11 (0)
        In Reply to: RE: OK ! posted by Mike B. on January 11, 2011 at 16:25:25

        nt
        

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• Read up on Farraday Cages - bartc 08:43:14 01/11/11 (1)
  In Reply to: RE: There posted by benie on January 11, 2011 at 05:08:23

  The issue is complete surrounds with no openings bigger than the wavelengths you are trying to shield. That's why microwaves can be "safe" with see through glass doors: the mesh screen in the glass has holes smaller than the microwaves.
  

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  • RE: Read up on Farraday Cages - benie 13:48:21 01/11/11 (0)
    In Reply to: RE: Read up on Farraday Cages posted by bartc on January 11, 2011 at 08:43:14

    So now I get more of an understanding on how using a condutive gasket could help. I will have to do some reading on Farraday Cages.
    
    Thanks!
    

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