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

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Malcolm Watts" <m.j.watts@xxxxxxxxxxxx>

Hi all,
        Further to Gary's note below I'd also like to note that I
don't think the 1.7 factor has anything to do with transformer type.
All transformers in disruptive coil use are ballasted in one way or
another - sometimes with a charging reactor on the output side (which
transforms to a more familiar ballast on the inpute side).

Malcolm

On 9 Aug 2005, at 16:07, Tesla list wrote:

> Original poster: "Lau, Gary" <Gary.Lau@xxxxxx>
>
> I hate to propagate this never-ending thread that has no relationship
> to its subject line, but...
>
>  > 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
>
>
>