Re: Thoughts on spark length (50Hz vs 60Hz)

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

Original poster: "R.E.Burnett by way of Terry Fritz <twftesla-at-qwest-dot-net>" <R.E.Burnett-at-newcastle.ac.uk>


Hi Mark,

I thought about the 50Hz vs 60Hz thing too.  An NST originally designed
for 60Hz would give slightly more output current when run at 50Hz,  but
before we all order new NSTs from the states,  I don't think there's much
in it really, once you connect a capacitor across the NST.

The 60Hz guys can actually use slightly smaller capacitors and less
ballast inductance than the 50Hz guys,  and still get the same
power.  But we are talking about small changes here,  nothing major.  You
design for what you have available.

We coilers in the UK must just get longer sparks through better 
engineering ;-)))

BTW,
I will do that Res Charging example thing later this week as I got a 
couple of Emails about it.

							Cheers,

							-Richie,

On Sun, 10 Jun 2001, Tesla list wrote:

> Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <A123X-at-aol-dot-com>
> 
> I was kinda wondering if people running coils in the UK have a bit of an 
> advantage over coilers in the U.S. since each charging cycle is longer and 
> therefore allows for a bigger bang each time. Actually I'm pretty sure now 
> that they do, but how much better is what I'm wondering now. 
> 
> Mark 
> 
> In a message dated 6/10/01 8:16:28 PM Eastern Daylight Time,
tesla-at-pupman-dot-com 
> writes: 
> 
> 
> >
> > Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>" < 
> > jimlux-at-earthlink-dot-net> 
> >
> > I would assume that the equation proposed by John Freau for predicting max 
> > spark length  (=1.7 *sqrt(VA)) is based on 120 pulses per second.  That
is, 
> > it's really more of  (length in inches)= 1.7 * sqrt(120 * energy per
bang) = 
> > 18.6*sqrt(energy per bang in Joules). 
> >
> > Obviously, there are breakrate effects on spark length, but, for rates in 
> > the 100-200 bps range.... 
> >
> > Comments? 
> >
> >
> 
> 
> 
> 
> 
> 
>