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Re: Calibrating E-field probes by simulation?

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

Hi Ed,

On 5 Apr 2005, at 21:47, Tesla list wrote:

> Original poster: Ed Phillips <evp@xxxxxxxxxxx>
> I see a fundamental problem in any such measurements using a remove
> capacitive probe.  Even if you can measure the field at a point, you
> have to know the geometry accurately to transfer it back into a
> voltage at the source.  If the coil is throwing streamers I can 't see
> how you can do that, since they "start out" at the terminal voltage
> and extend out for some distance (at least if you have enough of a
> coil that you'd like to brag about the voltage output).
>  Anyone figured a way to solve this problem?
> Ed

I think a meaningful measurement has to be done with no streamers
present (i.e. below breakout voltage). I think it is generally
accepted that breakout will lower the terminal voltage somewhat -
energy starts to get dissipated.