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Coil impedence calculation

Discussion in 'Electrical Engineering' started by scott, Sep 11, 2003.

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  1. scott

    scott Guest

    I was hoping some one could help me with a calculation. I am an engineer in
    another dicipline who has been trying to stitch together formulas from many
    sources to try to solve what I would have thought to be a basic problem.
    That is:

    How many turns are required for a single layer air-gap-coil of 4"diameter
    and 4" length to provide 8 ohms impedence at 80hz.

    The length of the coil can be varied 25% either way if that helps.

    I kept coming up with approx 1 turn, but thought this must surely be wrong.

    Any help would be appreciated.

    -Scott Hooper
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