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Flat spiral secondary/ OK to use "spiderweb"?



Original poster: "Jolyon Vater Cox by way of Terry Fritz <teslalist-at-qwest-dot-net>" <jolyon-at-vatercox.freeserve.co.uk>

Dear List,
With regard to flat secondaries and owing to the difficulties in winding a 
flat coil with many turns of wire,would be possible to simplify the winding 
process by adopting a "spiderweb" method of construction for these coils?

Furthermore, if the former upon which the coil was wound were thin enough 
with respect to the coil diameter and the wire diameter, would the normal 
flat spiral formulae not apply to a coil of this design?