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RE: NST TEST GRAPHS (was NST power test)
Original poster: "John H. Couture by way of Terry Fritz <teslalist-at-qwest-dot-net>" <couturejh-at-mgte-dot-com>
Terry, John F -
I was not able to find a large voltage rise at the resonant charging
capacitor. Maybe there is something special about Tesla coil loads connected
to a NST. It will be interesting to see what future tests reveal.
Another valuable graph to make is one where the load is a fixed capacitor
value and the X axis is a varying resistance in series. I used a .01623 uf
capacitor with resistances from 8 Kohms to 250 Kohms. The Y axis was the VA
for the input and the output. This graph gives VA curves that are similar to
the cap only curves shown on the internet. The intersecting curves were
opposite to the single cap curve.
If a coiler is going to use a NST for a Tesla coil these graphs need a lot
of study.
John Couture
-----------------------------------
-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Wednesday, January 22, 2003 1:47 PM
To: tesla-at-pupman-dot-com
Subject: Re: NST TEST GRAPHS (was NST power test)
Original poster: "Terry Fritz" <teslalist-at-qwest-dot-net>
Hi John,
I think you are seeing pure resonant rise effects in one case and shunt
saturation in the other.
We don't yet know what factors decide these things, but the case of "a
voltage output that continues to rise as the cap value is increased
significantly above the resonant value" is "interesting" :-)) Pure spark
power there!!!
Cheers,
Terry
At 10:18 AM 1/22/2003 -0500, you wrote:
>John, Jim, all,
>
>I noticed during some NST tests, that some NST's show a voltage
>peak when using the resonant cap value with the NST. Other NST's
>show a voltage output that continues to rise as the cap value
>is increased significantly above the resonant value. No spark gap
>was attached during these tests. I don't know what accounts for
>the different NST behavior seen in my tests.
>
>John