Re: What is proximity effect? (was:litz)

• To: tesla-at-pupman-dot-com
• Subject: Re: What is proximity effect? (was:litz)
• From: "Antonio Carlos M. de Queiroz" <acmq-at-compuland-dot-com.br> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Wed, 08 Dec 1999 06:12:20 -0700
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

Malcolm Watts wrote:

> Thick wire is better than thin in a closewind for scoring high Q.
> However, with the same winding pitch using thiner wire (i.e. a space
> wind), Q improves over the thick wire, at least that's what I've found.
> I can only write that down to the proximity effect.

The discussion about litz wire calls my attention to the fact that
thick wire may have important losses due to eddy curents induced by 
the powerful RF magnetic fields crossing the windings of the coils.

Antonio Carlos M. de Queiroz

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