RE: double wound secondary (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Thu, 4 Oct 2007 22:59:07 -0500
From: sparks@xxxxxxxxxxxxxx
To: Tesla list <tesla@xxxxxxxxxx>
Subject: RE: double wound secondary (fwd)

That makes perfect sense, because the coil-over-coil will have twice the
number of turns as the bifilar coil will have.  Been there, done that,
measured it.

73,

Ralph   W5JGV - WD2XSH/7


> NO, I'm not saying a two layer coils has 4X the inductance of
> a single layer coil.
>
> What I am saying is a close wound double layer coil will have
> an inductance
> approaching 4X the inductance of a BIFILAR wound coil.  The
> adjacent turns
> of the parallel coil causes a 1X wire diameter space winding
> effect, that is
> not present with a two (or more) layer close wound coil.

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