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HF transformer losses less with reduced magnetization path

Discussion in 'Electronic Basics' started by [email protected], May 3, 2007.

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  1. Guest

    Hi all,

    I have two Metglas C cores forming a high frequency transformer O
    core. I found that wrapping primary and secondary windings on the
    same bobbin as opposed to wrapping them on separate bobbins on
    opposite sides of the core has a profound improvement in transformer
    core efficiencies. I am aware that doing so would reduce the
    leakage inductance significantly, but that shouldn't affect core
    hysteresis efficiencies (up to 10% more efficient) I would think
    I'm recycling flyback currents anyway. Perhaps covering half the
    transformer with windings instead of most of it reduces core eddy
    currents, but as these cores are laminated composites I believe the
    eddy currents are low as it is. Either way, with a reduced
    magnetization path the coupling is better. I just don't quite
    understand what core loss mechanism is subdued in doing so. Any

    Thank you,

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