On Fri,1/1/2016 5:01 PM, n0tt1@juno.com wrote:
Your winding is shorted to the core and there
could be even a shorted turn.
Yes, BUT -- the conductivity of ferrite cores varies a LOT from one mix
to another. Some materials are excellent insulators (#61, #44), some are
pretty good conductors (77, 78, 73, 75). Some are such good insulators
that bare wires are used to wind coils through them. #31 is sort of in
the middle -- VOM probes between parts of a #31 core will read in the
high tens of KOhms.
Pages 4, 5, and 6 the link below show fundamental properties (including
Resistivity) for each material, one vertical column per material.
http://www.fair-rite.com/newfair/pdf/Fair-Rite_Catalog_17th_Edition.pdf
73, Jim K9YC
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