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Thread: The truth about demagnetisers.

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  1. #5
    Supporting Member mwmkravchenko's Avatar
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    Tony I do a lot of work designing loudspeakers. Particularly their motors. They are a static DC magnetic field. They are charged via a very high impulse current magnetic field. All that is accomplished with these kinds of spinning demagnetizers is a scrambling of the magnetic field eggs. Literally making a homogenous mix of the north and south poles. Nothing more.

    The draw speed answer is solid, and the reasoning is solid. Incidentally if you increase the rotational speed of the demagnetizer you end up with another kettle of fish. Dwell time required to make the magnetic field switch. The more rapidly the magnetic field switches the more powerful the magnets need to be to generate the same effect.

    I like your challenging the Large Language Model. I hate calling it A.I. because I rarely see intelligence. I see the same poop that is online being repackaged. So ask the deeper questions, and sometimes you get a better answer. But not always.

    Mark

    P.S. The electromagnetic demagnetizers uses a switching magnetic field, generally twice the mains electricity frequency as they use a rectified AC to generate the DC. A diode bridge. The diodes acting as one way valves on a plus or minus fluctuating wave form.

    Click image for larger version. 

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  2. The Following 3 Users Say Thank You to mwmkravchenko For This Useful Post:

    thevillageinn (Feb 4, 2026), tonyfoale (Feb 4, 2026), Tule (Feb 5, 2026)

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