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    Principle of ferrite beads

    Could someone advise the principle of ferrite beads ?
    Thanks.

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  3. #3
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    Re: Principle of ferrite beads

    The idea of a ferrite bead is that is is a lossy inductance. If you tried to filter out RF energy with a high Q inductor, you would get bias line resonances at certain frequencies. If you use a really poor inductor, you get signal rejection due to the inductive reactance, but you also do not get any high Q resonances since you do not get a good reflection off of the ferrite beads.



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