Watching an LGR video and he mentioned it. I always assumed they were just some kind of tension relief or a splicing point for repairs or something, literally never knew they had a more technical purpose.
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As the electrons’ fields move past the ferrite, the iron repels the magnetic force – like a strong wind will slow you down walking in to it.
It works a treat on sheilded cables, but ideally you want to put many loops through a ferrite.
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