[Elecraft] torroids

Tue Sep 3 14:32:00 2002

Yes you're correct on the inductance meter and I should have added at the
operating frequency range.  I had assumed this in my original e-mail.  The
wrong size of wire can in some cases cause enough change were turns may have
to be adjusted.  This is most important when winding the toroid for the VFO.
Close gauge will probably not make enough difference to matter.  I say try
it and see what happens.  Can't hurt anything and after all it's a learning
experience.

Cheers,
Robert
VE3RPF

----- Original Message -----
From: "Vic Rosenthal" <[email protected]>
To: "Elecraft" <[email protected]>
Sent: Tuesday, September 03, 2002 2:10 PM
Subject: Re: [Elecraft] torroids

> ZOOM wrote:
> >
> > Yes!  A different gauge of wire will result in more or less turns to
obtain
> > the same inductance as with the proper size wire.  If you must
compromise,
> > it's a good idea to have an inductance meter to verify correct
inductance.
>
> Actually, the wire size will not affect the inductance all that much
unless you
> can't fit the amount of turns that are called for.  However, you should
use the
> correct wire size.
>
> Also, using an inductance meter is a bad idea unless it can be adjusted to
> measure the inductance at the frequency that the toroid will operate at.
The
> effect of the core material is dependent on frequency.
>
> The short answer is 'follow the instructions and don't worry about it'.
>
> Vic K2VCO
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