Re: Tesla Coils (fwd)

To: Tesla List <tesla-at-poodle.pupman-dot-com>
Subject: Re: Tesla Coils (fwd)
From: root <root-at-poodle.pupman-dot-com>
Date: Thu, 2 May 1996 13:32:43 -0600 (MDT)


---------- Forwarded message ----------
Date: Thu, 02 May 96 09:28:00 PDT
From: Richard Hull <RICHARDH-at-whitlock-dot-com>
To: bin <bin-at-poodle.pupman-dot-com>
Subject: Re: Tesla Coils


Malcolm,

Your note about the conduction continuing is correct.  The ion cloud is very 
strong around a discharging Tesla coil.  I have written a couple of articles 
on this in Electric Spacecraft Journal and just delivered a paper on this 
same subject in Denver last week at the INE Symposium on New Energy.  The 
Tesla coil is not just a bunch of RF goings-on!  There is a full DC 
component involved, too!

Richard Hull, TCBOR

 ----------
From: bin
To: Tesla-list-subscribers
Subject: Re: Tesla Coils
Date: Wednesday, May 01, 1996 10:29PM

>From MALCOLM-at-directorate.wnp.ac.nzWed May  1 22:25:06 1996
Date: Wed, 1 May 1996 19:14:53 +1200
From: Malcolm Watts <MALCOLM-at-directorate.wnp.ac.nz>
To: tesla-at-pupman-dot-com
Subject: Re: Tesla Coils

Hi Richard (Hull),
                  Thankyou for the kind compliment. the fact is I
will never be coiling at the same power levels as you, Richard Quick
and others due to my limited resources. However, that hasn't stopped
me doing experiments where I need to test an idea. I think the point
you make about the long lifetime of the ion cloud is extremely telling
though - the implication is that there is a conductive path adding
to the top of the secondary. Point is, subsequent shots are going to
be conducting in this while the secondary is still attempting to ring
up (unless I'm completely off beam).

Regards,
Malcolm

You wrote (sorry about the reformat)...

> I somehow get the impression that you might think that the sparks
> and illuminated corona must be at full tilt to create this
> frequency shift. Ionized air, especially around a big machine, has
> a long lifetime  (100's of milliseconds)  and sparks are not
> necessary to lower the secondary frequency prior to the next "pop"
> if the machine has been on a few moments. Machines with large
> terminal loadings are particularly sensitive to this effect.  The
> best one can hope for is to actively fine tune the system under
> operation.
>
> Whether the primary circuit sees the secondary (bad quenching) or
> not will rarely matter to the secondary and the ion cloud, other
> than to impede best performance through poor quenching.  On big
> coils with large loadings, a full extra turn is most often needed
> to bring the operating system into resoance.