Re: NST Life Expectancy

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Dr. Resonance by way of Terry Fritz <teslalist-at-qwest-dot-net>" <resonance-at-jvlnet-dot-com>


If running with an NST keep your total (sum of all small gaps) to a value in
the range of 0.180 to 0.220 and your NST's will not fail with a good filter.
If you open them "all the way up" you will be hitting 2.2 * Erms which is
quickly fatal to a NST.

Dr. Resonance

Resonance Research Corporation
E11870 Shadylane Rd.
Baraboo   WI   53913
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Friday, June 13, 2003 12:03 PM
Subject: RE: NST Life Expectancy


 > Original poster: "Lau, Gary by way of Terry Fritz <teslalist-at-qwest-dot-net>"
<Gary.Lau-at-hp-dot-com>
 >
 > A properly constructed "Terry filter" includes safety gaps that have been
 > adjusted to fire just over the NST's open-circuit voltage, and a string of
 > MOV's.  Did your filter have these elements?
 >
 > Your statement that "my new RQ gaps were opened full.." would seem to
 > indicate the cause of the problem.  Safety gaps and MOV's are like speed
 > limit signs and speed traps, and opening the gaps is like putting the gas
 > pedal to the floor.  Live fast, die young.
 >
 > The water condensation may be a by-product of the fire resulting from your
 > NST's internal arcing, or it may be a remnant of a harsh pre-coiling life
 > in an outdoor sign, difficult to say now.  If the latter, this may have
 > been a factor in the unit's early demise.
 >
 > Gary Lau
 > MA, USA
 >
 >
 > Original poster: "WIZZARD . by way of Terry Fritz <teslalist-at-qwest-dot-net>"
 > <pbobyk-at-hotmail-dot-com>
 >
 > My 4" coil and had one of the NST's die.
 > I suspect my protection circuit was the cause.
 > I made a Terry filter and put it on my remaining NST.
 > I believe the second transformer has now failed.
 > I'm new to this game but I think a transformer should last more than a
 > couple minutes of operation.
 > What is the normal life expectancy of an NST?