Re: LTR vs. STR for pigs was Re: PFC Question

["Tesla list" <tesla@xxxxxxxxxx>]

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

Hi all,

Further to my note of yesterday:

On 13 Nov 2005, at 6:06, Tesla list wrote:

> Original poster: "Malcolm Watts" <m.j.watts@xxxxxxxxxxxx>
>
> On 11 Nov 2005, at 21:06, Tesla list wrote:
>
>  > Original poster: "Gerry  Reynolds" <gerryreynolds@xxxxxxxxxxxxx> >
>  > Opps, I slipped a decimal point.   48 inchs with 125 watts = Freau
>  > factor of 4.29.  This is remarkable and deserves recognition and
>  query > into whats the secret is.  (no wonder I was confused). > >
>  Gerry R.
>
> I have to say right here that being too good to be true means that it
> would have been. First off, the breakrate was *assumed* to be be
> 2Fmains. Scoping the coil some years later revealed that it was
> actually going as high as 4Fmains at times. While the gap religiously
> fired at 5kV at low rep using a DC supply I would not like to
> guarantee that it fired at that voltage under running conditions. Some
> recent runs were done with the gap set to fire at between 7 and 8kV
> and it put out about 5'. Measurements several years ago showed it was
> approaching the 1.7 factor. I think that old post of mine should be
> consigned to the scrapheap of history. I had long forgotten it and I
> think everyone else should too.
>
> Malcolm

I realized after sending the message above that Dmitry's attempt to
equate E x BPS with the 1.7 factor was flawed - that factor applies
to *wallplug draw* and I can tell the list with hand on heart that
the coil was drawing somewhere around 1100W measured from the
wallplug. I know for a fact that the wallplug draw did not accurately
reflect the primary power - far from it. The transformer became hot
very quickly. Sorry for the confusion.

Malcolm

>  > >Original poster: "Dmitry (father dest)" <dest@xxxxxxxxxxx>
>  > >
>  > >as for the "freau number" - reading the archives i found the
>  > >absolutely champion of all times - of  course it`s Malcolm Watts:
>  > > > >http://www.pupman.com/listarchives/1996/may/msg00090.html > >
>  > >"The coil I fire at work has been putting out 4+ footers with a
>  PRF > >of 100 (1/mains half cycle) on just 1.25 Joules per pulse
>  (about a > >third of what I had previously thought)." > > > >4.29+ >
>  >yeah, you don`t need any mega-joules - you just have to be a >
>  >mega-coiler :-D > >so you guys all suck again :-))) > > > >----- >
>  >The solution to no primary hits lay in getting rid of the primary! >
>  >This is no joke either. 20-06-96 (c) Richard Hull, TCBOR > > > > > >
>  > > >
>
>
>