Re: Interesting Skin Depth Data

• To: tesla-at-pupman-dot-com
• Subject: Re: Interesting Skin Depth Data
• From: "Ruud de Graaf" <rdegraaf-at-daxis.nl> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Sat, 11 Mar 2000 10:53:10 -0700
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

>Original Poster: "Dale Hall" <Dale.Hall-at-trw-dot-com>
>
>Hi all,
>The theory of using the resonator frequency may be perhaps
>flawed when doing skin affect analysis.
>
>Based upon my oscilloscope observations the
>frequency of an arc event is in the MHz range.
>
>The entire arc event is over in less that a microsecond (1MHz)
>The arc risetimes I've measured are in the order of
>~25nS to ~100nS (~20MHz-5MHz) and some even higher freq.
>
>The resonator serves to provide charge to the Csec.
>
>The discharge of Csec generates the arc freq quite independent
>of the resonator ring up freq, for any one arc event.
>
>At 10-20 MHz arc oscillation, the ~30 MHy of the secondary
>represents good XL isolation from the arc (like a series choke).
>
>At 10-20Mhz the skin affect may well be more of a factor in the human case.
>
>Regards, Dale
>

Hi Dale,

Well, is this good news!!! I hardly can wait to put my coil together and do
some measuring! What I don't understand is, how is it possible to hear
cracking on the radio LW-band when coiling when there is no radiation on
that frequency?

Ruud

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