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Best PSU for EMI/RFI/mains feedback

Discussion in 'Computer Components' started by daninthemix, Mar 26, 2003.

  1. daninthemix

    daninthemix
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    This isn't covered much in the PSU thread below, so I was wondering what was people'e opinions on the best PSUs for EMI/RFI rejection and very low feedback onto the mains...in short, is there an audiophile PSU out there?!
     
  2. Flimber

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    Why not use EMI/RFI suppression in a trailing socket and a screened mains cable to the PC ? Although, surely there's likely to be more EMI/RFI bouncing around inside the case than was ever in the mains anyway (?).

    Mike.
     
  3. ReTrO

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    You've got me thinking about my off-board PSU project.

    I think I may experiment with some cable shielding. I keed having quite a few ideas that have potential to be done. The latest one involves not having captive cabels coming out of the PSU case (in the main PC casing), and instead having sockets there for internal leads to be connected to. Sadly though it would look pretty cool, it wouldn't do anything for power quailty.

    I'll just have to work out how to shield internal power cables now....hmm...
     
  4. daninthemix

    daninthemix
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    I'll put it another way - Chord and high-end Linn power amps use switch mode power supplies which are so clean they do not touch the mains with EMI emissions etc. Now these things cost ££££ so I'm not expecting anything to that level - it's just that most of the PSUs mentioned in the thread below are geared towards lowering acoustic (rather than electrical) noise. Has any manufacturer tackled this issue?
     
  5. Flimber

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    I'll bet someone has tackled it, Dan but we're prob looking at specialist industrial or medical applications and the £££ to go with it.

    Mike.
     
  6. Flimber

    Flimber
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    ...I had a feeling I was going to think of something.

    CPC carry filtered IEC inlets. Theoretically, you could replace the one in any PSU with one of these or these to improve the mains going into it.

    In practice, if you don't know what you're doing, don't even think about it, you might make your case live and fry accordingly. You have to consider structural integrity of the new inlet and the wires coming out of it, there's far more to think about than mere blue, brown and green/yellow wires.

    Mike.
     
  7. mephistopheles

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    I remember there was a thread over on AVS a short while ago. Both Enermax and Antec scored well on some tests, but AFAIK none of the manufacturers actually publishes data on EMI levels etc, as you say, being focused on sound rather than noise levels (intended).

    If you are concerned to get clean power in, Russ Andrews at http://www.russandrews.com has a wide range of products, including "The YellO Power Cable", about which there was a post here a few weeks or so ago.

    I swear by Antec True Power.
     

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