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Re: Question regarding synchronous gap driven coils
Just like to inject a note on stranded wire based on measurements.....
> > I use 12 and 14ga pvc stranded machine tool wire. I never overcoat my
> > secondaries.
> >
> >
> > Skip >>
> > You dont have great losses with stranded wire? Stephen S.
>
> Stephen
>
> I don't know how to evaluate losses. I can tell you that my coils
> compare favorably with results others have posted to this list.
>From a TC type frequency point of view:
It's not as good as solid section, litz etc, but not nearly as bad as
braid. Reasons: Current flow tries to follow the twists to less
favourable orientations vs applied magnetic field so current will
tend to traverse from one strand to an adjacent one. However, the
twists are generally gentle so strand hopping, while it happens,
doesn't happen all that often per unit wirelength. Not so braid :(
Here, strands are continually diving from outside to inside with the
result that the current jumps from strand to strand in trying to
stay on the surface many many times for the same length. Braid
effectively inserts a huge number of connections into the wire.
Malcolm