Re: Secondary winding spacing

• To: tesla-at-pupman-dot-com
• Subject: Re: Secondary winding spacing
• From: "Malcolm Watts" <malcolm.watts-at-wnp.ac.nz> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Wed, 26 Apr 2000 16:22:38 -0600
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

Hi Marco,

> Original Poster: "Marco Denicolai" <Marco.Denicolai-at-tellabs.fi> 

> >The spaced turns at the bottom might draw more capacitance into
> >fewer turns at the top but that might be passe if you are going to
> >operate with a topload.
> 
> ??? Sorry, I don't get it. I wrote about spacing the last turns at the TOP
> below
> the toroid) and to wind tight the rest of the secondary. Is that better
> than all
> tight?

I don't see any point. I've not noticed any difference in performance 
between either type.
 
> >      If I were going to be doing your research I would want to build
> >the best secondary I possibly could (with consideration given to
> >convenience in size and ability to withstand a high output voltage
> >and for me that would be a spacewind with 1:1 spacing and wire no
> >less than 3 skin depths thick at the lowest possible frequency of
> >operation.
> 
> Operating freq. will be about 57 kHz. Wire diameter 1.5 mm. I would wind
about
> 1000 turns for 1.5 m length. No winding spacing. How does that sound to you?

Good.  It just costs more for wire than a space wind.

Regards,
Malcolm

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