Re: 18" sparks at 2KVA

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "David Rieben" <drieben@xxxxxxxxxxxxxxx>

Steve,

I also wire my twin MOT'd VTTC in this manner,
just like Cameron. As a matter of fact, Cameron's
VTTC (which was inspired by yours, I believe) in-
spired me to finally take the VTTC "leap" from my
previously SG coils only. The only way that I ever
got my 833A tube to arc over internally was to fire
my coil with a 7200 volt PT. The 2-seriesed MOTs
through a doubler have never casued that to occur
in my experience. Of course, I can't really turn up
my variac past about 85 on the dial (0-140 volts
output) as the MOTs begin to rapidly saturate and
draw over 25 amps with or without spark output at
this point.

David Rieben

----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Saturday, February 17, 2007 6:26 PM
Subject: Re: 18" sparks at 2KVA


> Original poster: "Steve Ward" <steve.ward@xxxxxxxxx>
>
> Wow, very cool!
>
> Have you had any arcing inside the tube at any time?  Thats really
> pushing the voltage!  Im gonna have to do that with my next VTTC
> project i think ;-).
>
> Steve
>
> On 2/16/07, Tesla list <tesla@xxxxxxxxxx> wrote:
> >Original poster: "Cameron B. Prince" <cplists@xxxxxxxxxxxxxxxxx>
> >
> >Hey guys,
> >
> >Yes, that's the way I've been running my coil since last year... I only
have
> >a meter capable of measuring 3kV so I am not exactly sure what the
voltage
> >is. Brett, you are probably right with your 7kV estimate.
> >
> >Based on my experiments with VTTCs, it's much better to throw higher
voltage
> >at them rather than higher current.
> >
> >I am also fairly certain this played a major part in one of my MOT's
biting
> >the dust due to the primary arcing to the core. I probably should have
cut
> >the leads from the secondaries that tied them to the cores.
> >
> >Cameron
> >
> >  > -----Original Message-----
> >  > From: Tesla list [mailto:tesla@xxxxxxxxxx]
> >  > Sent: Thursday, February 15, 2007 10:16 PM
> >  > To: tesla@xxxxxxxxxx
> >  > Subject: Re: 18" sparks at 2KVA
> >  >
> >  > Original poster: "Steve Ward" <steve.ward@xxxxxxxxx>
> >  >
> >  > Id like to know about this too.  That would sure give your coil some
> >  > advantage over the rest.
> >  >
> >  > On 2/15/07, Tesla list <tesla@xxxxxxxxxx> wrote:
> >  > >Original poster: Brett Miller <brmtesla2@xxxxxxxxx>
> >  > >
> >  > >Cameron,
> >  > >
> >  > >Ok, wow so two MOTs in series (plus doubler)...were
> >  > >you able to take a voltage measurement after the
> >  > >doubler?  Wouldn't it have at least been around 7KV to
> >  > >the plate?
> >  > >
> >  > >-Brett
> >  > >
> >  > >
> >  > >
> >  > >
> >  > >
> >  >
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