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Secondary Core.



What effect does the secondary "core" have on the overall
design of the coil?  Most people tend to use PVC, but does the
material and its thickness have an effect on the resonant
freq. of the secondary?  I would think it would have an effect
on the inductance and cause the freq. to shift.  What are the
offsets to the resonant calculations?  Has anyone tried
"unique" materials to wrap their coil on? What effect does
having an outside covering on the coil (several layers of an
insulative plastic?  Does it help with shorting or corona?


Charles Arruda