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RE: Why does running an NST on an async gap kill it?
- To: tesla@pupman.com
- Subject: RE: Why does running an NST on an async gap kill it?
- From: "Tesla list" <tesla@pupman.com>
- Date: Sat, 09 Aug 2003 13:03:31 -0600
- In-Reply-To: <8824A7AF2E4BB74BBFE01E2B13EDAAE70271548B@tayexc13.americas.cpqcorp.net>
- Resent-Date: Sat, 9 Aug 2003 14:43:13 -0600
- Resent-From: tesla@pupman.com
- Resent-Message-ID: <amuQ0B.A.0uH.dzVN_@poodle>
- Resent-Sender: tesla-request@pupman.com
Original poster: "Terry Fritz" <teslalist@qwest.net>
Hi,
The "latest" Terry filter specs at:
http://hot-streamer.com/TeslaCoils/Misc/NSTFilt.jpg
now varies the number of MOVs for various NST voltages. The number of MOVs
has also been improved to provide a little more tolerance and room for
people with 140VAC variacs.
Cheers,
Terry
At 08:19 PM 8/8/2003 -0400, you wrote:
>I believe there are MANY safety gaps out there that are set not to the
>maximum NST voltage, but to whatever is necessary to keep them from
>firing. And, Terry's filter spec's MOV's for a 15kV NST. If one uses a
>lower voltage NST and builds things verbatim without considering if the
>design needs to be modified, then a higher than rated voltage can be
>expected.
>
>Gary Lau
>MA, USA
>
> >Original poster: "Zagarus Rashkae by way of Terry Fritz
> <teslalist@qwest.net>" ><arbitrarily_random@yahoo.com>
> >
> >Hi Gary, All,
> >
> >I called it an "R-L-C" filter since the wirewound
> >power resistors do have significant inductance, and
> >they do help suppress spikes.
> >
> >I don't see how resonant rise can possibly destroy the
> >NST if there are MOVs and a saftey gap.
> >
> >Regards,
> >
> >Chris Lu