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Re: Interesting but not so impressive results...




--From: 	Malcolm Watts[SMTP:MALCOLM-at-directorate.wnp.ac.nz]
Sent: 	Sunday, September 07, 1997 7:52 PM
To: 	tesla-at-pupman-dot-com
Subject: 	Re: Interesting but not so impressive results...

Rod,
    I earlier said (in complete and utter error)....
> > 
> >     _________
> >     |   |   <---- started to become brighter.
> >     |   |
> >     |   |
> >     |   |
> >     |   |   <----- virtually no corona
> >     |   |
> >     |   |
> >     |   |   <----- brightest.
> >     |   |
> >     |   |   <----- earth wire ---+
> >     |   |   medium brightness    |
> >     ---------           ---
> >     Base.                \\\
> > 
> > 
> > I guess this is an indication of what the wave is doing...
> > 
> > Also, there could be alot of contributing factors -
> > 1/ zero quenching on the single-static gap
> > 2/ completely out of tune
> > 3/ No toploading
> > 4/ primary circuit no where near in resonance
> > 5/ secondary re-coupling energy back to primary
> > 
> > etc..etc...
> > 
> > But, I'm sure I'll fix it up soon, just need more money... 
> > Some, if not most of you will agree, big coils are an expensive hobby! :-)
> > 
> > Anyway, I was just wondering if anyone would like to elaborate on the
> > corona effects I observed with the secondary?
> 
> Be happy to. My reading of that is that you tuned to the second 
> harmonic and the response will be appalling from a coil that size. Hi 
> Q resonators are pretty narrow band in response. Your gap will be 
> taking a beating I'd think. Rather than increasing the primary cap, 
> how about increasing primary L. You won't get the best from you 
> supply with a static gap but I think you'd be pleasnatly surprised at 
> the results.

That should of course be 3rd harmonic (3/4 wave), not second. Even so, 
the results are somewhat less than I would have expected. I'll do 
some calcs of your tuning later and post.

Malcolm