>
> On Apr 18, 2005, at 3:13 AM, G3rzp@aol.com wrote:
>
>
> I vaguely remember somewhere the claim that because the C
> cores are precision ground, the overall magnetic reluctrance
> is less.
>
I'm only speculating but is it possible that the difference
is the orientation of the core? Since the C-core is wound,
the laminations are radial vs. a perpendicular orientation
in the EI-core.
It has been 30 years since I have any electromagnetics (and
I haven't used it since <G>) but I believe the C-core's
laminations are aligned parallel to the magnetic flux vs.
perpendicular with an EI-core. It would seem that change
would result in a lower magnetic reluctance as the flux is
able to "flow" with (in) the laminations rather across them.
73,
... Joe, K4IK
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