Re: Protecting NST's

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

Original poster: "Gregory Hunter by way of Terry Fritz <twftesla-at-uswest-dot-net>" <ghunter31014-at-yahoo-dot-com>

Hi Jonathan,

I suggest you use an R/C protection filter and safety
gaps.  I have a simple NST filter on my web page that
seems to work well.  Also, don't skimp on the safety
gaps.  I find a Jacob's ladder-like setup made of
10AWG solid copper wire works well, and it is
self-quenching due to the Jacob's Ladder action (the
arc rises until it puts itself out--then the Tesla
coil fires up again--it's very fast)

Cheers,

Greg
http://hot-streamer-dot-com/greg

--- Tesla list <tesla-at-pupman-dot-com> wrote:
> Original poster: "jpeakall by way of Terry Fritz
> <twftesla-at-uswest-dot-net>" <jpeakall-at-mcn-dot-org>
> 
> Howday All,
> 
> I got a 15kv/60ma NST yesterday for $20, along with
> 20' of HV wire. Sweet!
> (saw the NST tested too!) I hear so much about blown
> NSTs, and I don't wanna
> blow mine. So, aside from a safety gap, what can I
> do to protect my NST?
> 
> I hooked up the NST to my coil (a very small one)
> and have applied about 70%
> power from my variac. I seem to get a fair amount of
> "backfire" from the
> safety. How frequently is it ok for this to fire?
> 
> Will the NST require substantially different tuning
> or SG settings? I have
> been using an OBIT up until now.
> 
> Thanks all
> 
> Jonathan Peakall
> 
> 
> 


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