I once got what seemed to be a reasonable measurement of the voltage of
an NST by making a voltage divider from a long (3-4 feet), shallow
(probably 1/8" deep) trough of tap water (needs to be very level). Used
a little hand held dvm (with meter movement; not electronic) to measure
a small distance in the water. It gave a reasonable measurement after
measuring distances, and measuring several different gaps between the
DVM probes, showed the proper expected linearity, on comparison.
I haven't done any calculations on scaling this up, but perhaps a
really long plastic tube, filled with distilled water, and capped on
each end with a metal plug? Might need to let it sit for a long time, to
allow any trace contaminants inside the tube to diffuse evenly
throughout the water?
Not sure I'd try this, but it might spark a few saner ideas...
Wes B.
On 2018-02-26 21:22, Chris Boden wrote:
> Ignoring limitations of cost and size, is it possible to build a large
> precision voltage divider (imagine something inside a 10' tall PVC pipe on
> a stand with a toroid in top) that would be able to accurately measure the
> output voltages of medium-sized Tesla Coils?
>
> Thoughts? Details? Design/method/parts suggestions?
>
> Has anyone ever done this before at the hobbiest level?
>
> --
>
> Chris Boden
> President
> The Geek Group National Science Institute
> www.thegeekgroup.org [1]
Links:
------
[1] http://www.thegeekgroup.org
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