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wire sleeve for inductor winding

Discussion in 'Electronic Design' started by Jamie Morken, Oct 7, 2008.

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  1. Jamie Morken

    Jamie Morken Guest


    I am winding some 12gauge equivalent litz wire (660 strands of 38 AWG
    wire) onto a plastic inductor bobbin (EE65 ferrite core) and would like
    to have 500Volt insulation between the windings. I was thinking a
    fiberglass braided sleeve around the wire would work, is this a good
    choice or is there a better way to insulate the wire from one turn to
    the next? I plan on using 1 or two layers on the inductor, the max
    voltage across the inductor is about 500V, so for one layer of 8 turns,
    maybe the enamel on the litz wire is sufficient, or is it still good to
    use a wire sleeve? The litz wire is "unserved", so it is just the 12
    turns per foot, and no "circumferentially" wound string on it which
    could help with insulation if it was there.

    Here is some fiberglass sleeve I Was looking at:

    Any other good solutions?

  2. Tim Williams

    Tim Williams Guest

    Two layers of masking tape works well enough. Soak in hot wax to fix
    things together semipermanently (ok fine, transformer varnish).

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