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Re: Big Time Coil Problems...



No, I guess I should have clarified this.  You need around 5-6 kV to have
reliable spark gap standoff and ignition.  NST's work nice because they in
the approx correct voltage range.  Current is very important.  10-12 kV
provides very reliable standoff distances and accurate ignition in a
sparkgap (rapid ionization rise time).

Regards,

Dr. Resonance


-----Original Message-----
From: Tesla List <tesla-at-pupman-dot-com>
To: tesla-at-pupman-dot-com <tesla-at-pupman-dot-com>
Date: Wednesday, February 16, 2000 7:03 PM
Subject: Re: Big Time Coil Problems...


Original Poster: rdgraaf-at-ocenl.nl

Date forwarded: Wed, 16 Feb 2000 07:13:18 -0700
Date sent:      Wed, 16 Feb 2000 06:44:18 -0700
To:             tesla-at-pupman-dot-com
Subject:        Re: Big Time Coil Problems...
Forwarded by:   tesla-at-pupman-dot-com
From:           Tesla List <tesla-at-pupman-dot-com>

Dr. Resonance,

If that's the case (more current instead off more voltage), what
about a 2300V / 0.6A microwave transformer. Would that be
something to start with? (1380VA against the NST 1350VA)
Do you know if that is enough to iniate ionisation?

Ruud de Graaf
Greetings from lovely and wet Holland


> Original Poster: "Dr. Resonance" <Dr.Resonance-at-next-wave-dot-net>
>
>
>
> No, it won't work.  First you shouldn't push your transformer especially
if
> a neon type, and second if you are running the NST at 18 kV Erms then the
> peaks are at least 25 kV on the caps --- probably closer to 28-30 kV with
> resonance --- so you are frying your caps if you haven't already done
> permanent damage.  You really don't need more than 12 kV Erms with most
> small to mid systems -- it's current you want not extra voltage.
>
> Regards,
>
> Dr. Resonance
>
>
> -----Original Message-----
> From: Tesla List <tesla-at-pupman-dot-com>
> To: tesla-at-pupman-dot-com <tesla-at-pupman-dot-com>
> Date: Tuesday, February 15, 2000 10:39 PM
> Subject: Re: Big Time Coil Problems...
>
>
> Original Poster: "Malcolm Watts" <malcolm.watts-at-wnp.ac.nz>
>
> Hi Ryan,
>
> > Original Poster: "Ryan Ries" <spud-at-wf-dot-net>
> >
> > Man, I'm really mad now.  Our coil is not working at all (again?!).  Our
> > power source is 150v going into 15Kv/90ma transformer to make 18Kv.  We
> are
> > using a 6" secondary wound with 22 gauge wire.  (Albeit short winding,
it
> > should at least be doing something!)    Our caps are mica transmitting
> caps
> > in series to make .00325µf at 20Kv.  I believe this is where we are
going
> > wrong.  We can get no output at all from the coil no matter what.   Do
we
> > just need a better capacitor system to fix the whole thing?  I know the
> > capacitance is really low, but I was hoping it would at least do
> something.
> >  It seems like after that last secondary blew up, everything just went
to
> > heck...  Ugh, I hope this gets better soon...
> > Thanks,
> >      Ryan
>
> You need a whole lot more capacitance - 10x as much would be
> good. Have you calculated what your primary energy (Ec) is with
> about 3nF charged to 18kV? Don't forget to adjust your primary
> turns to maintain tune.
>
> Regards,
> Malcolm
>
>
>
>
>




Met vriendelijke groet,

Ruud de Graaf
Software Engineer
Oce Nederland B.V.
rdgraaf-at-ocenl.nl
tel: 073-6815303