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Re: Capacitor C/Peek


Thank you.  Very interesting.

By the way what are the dimensions
(id1, od1, id2, od2, turns1, turns2)
of your double primary for the
3" X 17" X #28 gauge wire
system?
Barry

 ----------
|From: "tesla-at-poodle.pupman-dot-com"-at-PMDF-at-PAXMB1
|To: Benson Barry; "Tesla-list-subscribers-at-poodle.pupman-dot-com"-at-PMDF-at-PAXMB1
|Subject: Re: Capacitor C/Peek
|Date: Friday, November 01, 1996 5:42AM
|
|<<File Attachment: 00000000.TXT>>
|From rwstephens-at-ptbo.igs-dot-netThu Oct 31 22:34:48 1996
|Date: Thu, 31 Oct 1996 23:50:59 -0500
|From: "Robert W. Stephens" <rwstephens-at-ptbo.igs-dot-net>
|To: tesla-at-pupman-dot-com
|Subject: Re: Capacitor C/Peek
|
|>>From Benson_Barry%PAX5-at-mr.nawcad.navy.milWed Oct 30 21:43:23 1996
|>Date: Wed, 30 Oct 1996 06:25:00 -0400 (EDT)
|>From: Benson_Barry%PAX5-at-mr.nawcad.navy.mil
|>To: tesla-at-poodle.pupman-dot-com
|>Subject: Re: Capacitor C/Peek
|
|
|>Clark and Ryan?  What is the citation for this paper?
|>Sounds interesting.
|>Barry
|> ----------
|
|<big snip for Chip>
|
|I (Robert Stephens) wrote:
|
|>BTW, you used 20 kV/inch for your voltage guestimation.  According to
|>the famous paper by Clark and Ryan the value is more like 48-52
|>kV/inch between sphere gaps. Trouble is, all sorts of factors
|>influence this measurement to make it almost meaningless in the field
|>(pun intended!).   Carefully controlled conditions must be set up to hope
|>for any accuracy when attempting to measure voltages by spark length.
|
|The paper is called 'Sphere Gap Discharge Voltages At High
|Frequencies', by J. Cameron Clark and Harris J. Ryan.  Presented at
|the 31st Annual Convention of the American Institute of Electrical
|Engineers, Detroit, Michigan, June 24, 1914, under the auspices of
|the Electrophysics Committee.
|
|ABSTRACT.
|
|'The paper describes a series of experiments made by the authors to
|determine the values of steady high-frequency, high-voltage currents
|required to discharge between seven inch copper spheres in air, at
|ordinary temperatures and barometric pressures.  A 15-kw, arc
|generator was used as the source of high-frequency sustained high
|voltage, and the apparatus employed in securing and measuring
|currents of 123,000, 255,000 and 612,000 cycles is described in
|detail.
|
|The sphere gap standard consisted of electrolytic copper spheres
|mounted on the ends of brass tubes in treated wooden frames, and the
|gap lengths were accurately determined by means of calipers and
|micrometer screw or steel scale.
|
|The results obtained are given in Tables II and III and are also
|charted in curves I and II, Fig.5.  The 123,000-cycle values show a
|right-line relation between sphere gaps and discharge voltage, which
|line, when extended, passes through the origin.  The high-frequency
|voltages are almost uniformly 4.5 kv. below the 25-cycle voltages
|observed by Chubb and Fortescue.'
|
|end Abstract.
|
|rwstephens
|