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using Q factor of inductor for power loss calculation

Discussion in 'Electronic Design' started by Jamie Morken, Sep 28, 2008.

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  1. Jamie Morken

    Jamie Morken Guest


    I made some ferrite rod inductors, about 10 turns of 14 AWG wire on the
    rod gives about 5uH and a Q factor of ~30 or so, while 260 turns of
    38AWG litz wire (14AWG equivalent) gives a Q approaching 90 or so, both
    at a measurement frequency of 15.6kHz. This inductor will have about 1
    amp of current ripple through it at about 200kHz, (rough estimation)
    and about 12Amps DC current. How can the power losses of the inductor
    be calculated from the Q factor and this AC current information?

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