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RE: Homemade litz with THHN wire?

Original poster: "Lau, Gary" <gary.lau@xxxxxx>

If you are using the proposed wire just for interconnecting primary
components, there is very little to be gained, since the lion's share of
losses are in the spark gap (for those of us still using these quaint
devices), and primary inductor.  If one were to wind the primary
inductor using Litz, there are gains to be had, although tapping becomes

But the individual strands of Litz wire must be sized according to the
operating frequency.  See a table at
http://www.coonerwire.com/Products/Litz/DesignD_2.html.  The smallest
strand size commonly used is 30AWG, and this is suitable only for
frequencies 1-10Khz, or below.  Higher frequencies require comparably
smaller strands; 36AWG is recommended for 50-100KHz.

Regards, Gary Lau

> Original poster: "Hydrogen18" <hydrogen18@xxxxxxxxxxxxx>
> Hi list,
> I use 8 awg stranded THHN copper wire for all my connections in my
> coil project. Given the high frequencies present on the primary coil,
> it be advantageous to buy a spool of 18 awg THHN and bundle it
together to
> make something similiar to litz wire or would I be wasting my time?
> anyone attempted this?
> Eric