Re: Primary Heating

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

Original poster: "rheidlebaugh by way of Terry Fritz <twftesla-at-qwest-dot-net>" <rheidlebaugh-at-zialink-dot-com>

PAUL YOU BREAK MY HEART. MY 4 PARRALEL DOUBLE STRAPED WITH 1" WIDE STRAPS 30
KV CAPACITORS ONLY PRODUCE SLOW CURRENT INPUT OF A SIGN WAVE WHEN MY SG
FIRES. I DIDN'T KNOW YOUR WORLD WAS SO DIFFERENT FROM MINE. SORRY.
  ROBERT  H

> From: "Tesla list" <tesla-at-pupman-dot-com>
> Date: Tue, 05 Mar 2002 20:03:38 -0700
> To: tesla-at-pupman-dot-com
> Subject: Re: Primary Heating
> Resent-From: tesla-at-pupman-dot-com
> Resent-Date: Tue, 5 Mar 2002 20:16:30 -0700
> 
> Original poster: "Paul Nicholson by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> <paul-at-abelian.demon.co.uk>
> 
> rheidlebaugh wrote:
>> No current is not every where the same.
> 
> I must correct this,
> 
> The primary has a virtually uniform current, unlike the
> distributed quarter wave resonators whose properties Robert
> is refering to.  In those, there is sufficient capacitance
> along the length to cause the necessary 90 degree phase delay
> to a wavefront travelling along it.  The length of wire necessary
> to do this approaches the free space quarter wave in straight wires.
> 
> The primary coil would like to behave like this, and if it did
> not have a large C across it, it would resonate with the
> familiar 1/4 current profile that Robert describes, but at a
> frequency consistent with its own self-capacitance, circa a few
> megahertz.  The added C of the primary cap is vastly higher than
> the primaries self-C, and the current supplying the tank C therefore
> dominates the primary current. The additional non-uniform current
> due to primary self-C is about 1% of this, and the resulting phase
> change along the coil is therefore at best 1 degree.  Of course,
> the primary circuit can still be said to be quarter wave resonant,
> its just that the primary tank C is providing the other 89 degrees
> of phase shift.
> 
>> Keeping in mind in a TC we are not dealing with a uniform sign
>> wave current, but a multi harmonic pulse burst of intense current.
> 
> No, we are dealing with an almost sinusoidal current. The primary
> current rises gently over the first quarter cycle of the resonant
> frequency.  Providing your k factor is not too high (!) it is a
> mistake to think of the TC being excited by a sharp pulse.
> --
> Paul Nicholson
> --
> 
> 
>