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Originally Posted by crytklmass
Does this object really work. I have noticed some expensive and less expensive cables using them on there power Cords, I.C.'s and Speaker Cables. Some choose to use them while other do not. Is there any supporting evidence that proves they provide some sort of purpose? I know some D.I.Y.'s making cables themselves, some with Ferrite (very cheap to buy) and some without.
I.E. Ferrite core's are not on W.W. I.C. but they are on Transparent. Why? is it to charge more. What is the breakdown, are they really needed or just an added sense of security and of course a price hike.
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We use cylindrical ferrites in the Wireless and Electromagnetic industry to suppress surface currents on coaxial cable. This prevents or decouples the cable from becoming part of the antenna at lower RF frequencies. Ferrites are designed to be lossy in various frequency bands, and for various application. They are basically RF chokes that block RF propagation on the OUTSIDE of the cable, as used in this context.
-Gregory
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