Re: Re: [TCML] Thumpers Toroid - general ring-toroid modeling

["Antonio Carlos M. de Queiroz" <acmdq@xxxxxxxxxx>]

Bert Hickman wrote:
> Following is a screen shot of the potential and total E-fields from an 
> Inca simulation that assumed 26 kV/cm for breakout and a very large (9 
> foot diameter) toroid consisting of 16 1.5" diameter rings, with a 
> minor (or bundle) diameter of 18". For this model, Inca predicts a 
> toroid breakdown voltage of about 1.146 MV, while the utility 
> transmission line model predicts 1,028 MV. The following screen shots 
> show the ring-toroid model and calculations and the plot of total 
> electric field:
>
> http://www.capturedlightning.com/Papers/Bundle-Toroid1.jpg
> http://www.capturedlightning.com/Papers/Bundle-Toroid2.jpg
It's interesting to see that this construction really approximates a 
solid toroid. Breakdown occurs in the ring with maximum radius, C4, but 
the breakdown with it alone would be just 303 kV (comment the other 
lines with *). A solid toroid with the same outer dimensions results in 
1784 kV and 129 pF of capacitance. The bundled toroid has 127 pF.
You can add more rings to the outer wires to increase the precision.

Antonio Carlos M. de Queiroz

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