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RE: Continuously variable primary



Original poster: "David Thomson" <dwt@xxxxxxxxxxxx>

Hi Ken,

> Is it not so that 2 oppositely-wound spirals adjacent to each
> other will result in near-cancellation of the resultant flux?

Actually, it is two similarly wound spirals adjacent to each
other that near cancel the inductance.  Oppositely wound flat
spiral coils increase the inductance.

Dave