Re: Overcoupling?

• To: tesla-at-pupman-dot-com
• Subject: Re: Overcoupling?
• From: "Antonio Carlos M. de Queiroz" <acmq-at-compuland-dot-com.br> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Wed, 05 May 1999 00:06:28 -0600
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

Terry Fritz wrote:

> >       The corona area you mention is probably a natural high field
stress area
> >that linear wound Tesla coils have about 2/3 up the secondary.

Why? 

Frequently I see the term "overcoupling" in this list, but can't see
what it means. I don't see a reason for increased voltage gradients
along the secondary just because the coupling coefficient to the
primary is increased. A primary closer to the secondary would induce
sparking between the two coils, certainly, but why sparks along the
secondary? Would not this effect be due to tuning to a higher order
resonance mode instead?

Antonio Carlos M. de Queiroz

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