Re: Edge Wound Primaries

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: robert heidlebaugh <rheidlebaugh@xxxxxxxxxxxxxx>

Coils wound with ribbon have several advantages, Wound flat they have high
capacitance for low frequency, Edge wound they have low capacitance. Ribbon
will carry high current.
   Robert   H
--


> From: "Tesla list" <tesla@xxxxxxxxxx>
> Date: Thu, 08 Dec 2005 19:23:42 -0700
> To: tesla@xxxxxxxxxx
> Subject: Edge Wound Primaries
> Resent-From: tesla@xxxxxxxxxx
> Resent-Date: Thu,  8 Dec 2005 19:21:08 -0700 (MST)
>
> Original poster: "Angelini, Frank J" <FrankJAngelini@xxxxxxxxx>
>
>
>
> I have several old magazine articles from the 1920's - 40's.  Many
> of the TC's advertized for purchase had edge-wound  primaries. They
> used thin copper or brass ribbon stock, approx 1/2 - 3/4 - inch
> wide.  Why was this design used?  Is there an electrical
> advantage?  I have also seen this method of coil winding used in ham
> radio gear.  Is special machinery required to edge-wind a primary
> coil or can this be done in a home workshop?
>
> Thanks
>
>