Re: Weird safety gap behaviour

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

Original poster: Terry Fritz <teslalist-at-twfpowerelectronics-dot-com>

Hi,

At 02:46 PM 9/5/2004, you wrote:
>On 3 Sep 2004, at 20:57, Tesla list wrote:
>
> > Original poster: "Gerry Reynolds" <gerryreynolds-at-earthlink-dot-net>
> >
> > Are you saying the equivalent inductance of the NST is decreasing as
> > the amplitude is increasing and thus at low voltage (Cp=2.5 Cres), the
> > Fres is 38 Hz and when Lnst decreases, the Fres moves up closer to
> > 60Hz   If so, is this due to shunts saturating?
> >
> > Gerry R.
>
>Not the shunts, the core itself. The shunts would be most unlikely to
>saturate given that they have a significant airgap in series with
>them.
>
>Malcolm


Someday....  Somebody, needs to measure out an NST's core dimensions, 
number of turns, etc, so we can do the math on the core, shunts, air gaps 
and all to try and figure out what is really going on magnetically inside 
and NST...  Sort of reverse engineer the thing magnetically and then maybe 
we would know a bunch more...

I think Gerry has an NST he is depotting.  I have one but I don't know the 
original specs at all...  We just need the basic data, and it is all "easy" 
first year EE stuff then...

Cheers,

         Terry