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Re: 20 joules at 100 bps vs 4 joules at 500 bps

Original poster: "Brian" <ka1bbg@xxxxxxxxxxxxx>

yes, ditto here too. my 9kv 60 ma draws 550 watts at 150 volts in running #3
tesla coil as i have it set up. cul brian f.
----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Tuesday, August 09, 2005 7:49 PM
Subject: Re: 20 joules at 100 bps vs 4 joules at 500 bps


> Original poster: FutureT@xxxxxxx
>
> In a message dated 8/9/05 6:42:02 PM Eastern Daylight Time,
> tesla@xxxxxxxxxx writes:
>
>
>
> >I hate to propagate this never-ending thread that has no relationship to
> >its subject line, but...
>
>
> Gary,
>
> I'm glad you brought that up again since my findings agree
> precisely with yours.  Folks should not assume that NST nameplate
> ratings are indicative of actual power or VA usage.  The 135V
> really helps to draw in the power too.
>
> John
>
>
> > > Original poster: Terry Fritz <vardin@xxxxxxxxxxxxxxxxxxxxxxx>
> > >
> > > Hi,
> > >
> > > The Freau formula's "1.7" factor is for NSTs.  NSTs are very power
> > > limited and predictable so the formula works over a wide variety of
> >systems.
> > >
> ><snip>
> >
> >Using the faceplate power rating on an NST may often, IMO, seriously
> >understate the true power consumption.  Particularly when using LTR cap
> >sizes and a Variac-elevated higher than nominal mains voltage,
> >ferroresonance may occur and permit huge amounts of power to be drawn,
> >far in excess of the faceplate rating.  My unmodified 15/60 NST, with a
> >faceplate rating of 900W, should pull just 7.5 Amps @120VAC.  But the
> >reality is that under load, I peg my 20A meter @135VAC (this *with* PFC
> >caps).
> >
> >Regards, Gary Lau
> >MA, USA
> >
>
>
>
>
>