Re: TC potential measurements

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Malcolm Watts" <m.j.watts@xxxxxxxxxxxx>

On 15 Mar 2005, at 19:33, Tesla list wrote:

> Original poster: "Dr. Resonance" <resonance@xxxxxxxxxx>
>
>
>
>
> I'm aware of Bill's 25 megaVolt claim, but if you run Antonio's
> magnifier program he would find it might be hitting 2 mV max  --- and
> that might be stretching things a bit.
>
> Dr. Resonance

Perhaps 2MV might be a bit closer the mark than 2mV ;)  Good to see
you back DC.

Malcolm


>
>
>  >
>  > 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 > > >
>
>
>