RE: Resonant Frequency

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "David Thomson by way of Terry Fritz <twftesla-at-qwest-dot-net>" <dave-at-volantis-dot-org>

Hi Paul,

I have a Tesla designed, early 1900s built double coned bipolar coil.  A
picture of this coil can be seen at...
http://www.tesla-coil-builder-dot-com/double_cone_bipolar_tesla_coil.htm

I'll be taking measurements this week of all my coils and specifically the
measurements you asked for last week.  Can you come up with some ideas on
how I can measure this dual cone coil to test the quarterwave hypothesis.

Dave

-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Saturday, February 23, 2002 1:01 PM
To: tesla-at-pupman-dot-com
Subject: Re: Resonant Frequency


Original poster: "Paul Nicholson by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<paul-at-abelian.demon.co.uk>

Dave Thomson wrote:
> Does this suggest a cone might resonate exactly at quarter wave?

A cracking good hypothesis.  We see helicals going one way, and
if flats turn out to be going the other way, then there must
surely be an intermediate shape in which the effect of winding
on the inductive coupling just cancels the effect of increasing
capacitance.
--
Paul Nicholson
--