Understanding How Ferrites Can Prevent and Eliminate RF ...

Understanding How Ferrites Can Prevent and Eliminate RF Interference to Audio Systems Page 2 air, copper, and aluminum is 1, while magnetic materials have a permeability much greater than 1. Typical values (measured at power frequencies) for stainless steel, steel and mumetal are on the order of 500, 1,000 and 20,000 respectively.

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