RE: TC potential measurements

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Christopher 'CajunCoiler' Mayeux" <cajuncoiler@xxxxxxx>

Terry, I'm intrigued by this plane antenna
device... but for those of us who can't
afford an o'scope, can this be adapted to
work with a common analog meter, such as
the Simpson 260 or similar?
--
C.L. Mayeux, MsEE
Owner, MSB Data Systems
cajuncoiler@xxxxxxxxxxxxxxxxxx
http://cajuncoiler.msbdatasystems.com


> -----Original Message-----
> From: Tesla list [mailto:tesla@xxxxxxxxxx]
> Sent: Tuesday, March 15, 2005 7:55 PM
> To: tesla@xxxxxxxxxx
> Subject: Re: TC potential measurements
>
>
> Original poster: Terry Fritz <teslalist@xxxxxxxxxxxxxxxxxxxxxxx>
>
> Hi DC,
>
> At 06:21 PM 3/15/2005, you wrote:
>
> >Terry's planar antenna and a 200 kV DC power source gave us good
> calibration
> >which we compared to the spark length measurement method.  We
> use a 7" dia
> >Van de Graaff sphere for most of our measurements.  We used a
> 14" dia sphere
> >for the large coils with toroids in excess of 4 ft dia.
> >
> >Values were in very close agreement.
>
> Glad you are enjoying the little plane antenna so much ;-))  For those
> interested, the details are here:
>
> http://hot-streamer.com/TeslaCoils/MyPapers/planant/waveant3.html
>
>
> >Even our Big Bruiser with it's 26 ft. long spark at 26 kVA was only
> >developing 865 kV!  We thought it was over a megaVolt but measurements
> >provided the truth.
>
> At first I worried that models were predicting such low
> voltages...  But it
> proved to be correct....  In the case of Bruiser, just round to
> the nearest
> MV :o)))  I think Bill's #13 is rated 25MV ;-))
>
> The DRSSTC makes streamer formation of low voltage little arcs building
> along a path formed by the previous arcs to form the big arc pretty
> obvious...  "Disruptive" or pulsed arcs are now well known to arc at far
> greater distance than the equivalent CW cases...
>
> Marco now seems to have achieved the real "holy grail" and has a system
> going that can directly measure TC output voltages at high bandwidth
> without loading down the coil oddly!!!
>
> >Ross Engineering also manufactures NBS standard traceable voltmeters
> >accurate from DC to 1 MHZ and potentials up to 1 million Volts.
> Not cheap
> >but very accurate.
>
> I "think" they are messed up by being near very high voltage AC
> fields...  The measurement active columns are not shielded to the extent
> need to be immune from high dV/dL near them...  But Marco an Paul
> seems to
> have things figured out (or they will real quick now ;-)).
>
> In a short time, we will have some very accurate data to
> ponder!!!  We also
> have OLTCs and DRSSTC that can reproduce sparks to stunning accuracy and
> can be fiddled with quite independently of all those things that used to
> annoy us so much!!
>
> But now worries.  It will still be some time before National has
> a TC in a
> 16 pin DIP ;-)))
>
> Cheers,
>
>          Terry
>
>
>
> >Dr. Resonance
>
>