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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: It's all about prevention of contamination posted by Maxamillion on January 10, 2011 at 09:58:53:
Yup, they really work. And should be quite 'safe' at the sources as you are doing.
I doubt that many AAers think they don't work, rather they are probably concerned that they may have a negative effect also. And I suppose they might depending upon which ones you use and where you use them. No surprise there, nails are like that also, they work pretty well in walls, not so good in tires. But ferrites (aka Z-beads) are magic bullets when doing EMI work, both for investigation and often for the cure. Stir in 3M shielding tape, tinfoil and a spectrum analyzer and you have the EMI engineer's toolbox.
As far as using them directly on your stereo system, well it all depends on the problems and implementations of the system. I've got them on every speaker cable for instance because I had a problem with a local ham transmitter years ago and haven't bothered to remove them even though he has since ditched the beam. There's a case where the signal is well balanced so it doesn't see the bead but incoming RFI is mostly longitudinal and sees their full permeability and loss tangent. All to the good in my book. Interconnects and power cords are shakier because they both tend to have at least some longitudinal signal component. Try and see is the name of the game since so much depends on how the gear is implemented and what the local RF environment is like. I think you are right on course.
Rick
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- RE: Ferrites - rick_m 09:05:16 01/11/11 (0)
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