Re: [TCML] multiple miniature transformers

["David Rieben" <drieben@xxxxxxxxxxx>]

Hi Conor,

Personal experience has shown me that a typical (Jefferson)
15/30 NST weighs about 23 lbs, so you (and your friend) are
toting a bit more than 120 lbs if you're picking up eight in one
"cluster", plus the weight of your cart - probably closer to 200
lbs. total. That would explain it "being too much for one man
to handle" ;^\ My 5 kVA, 19.2 kV "piglet" just tips the scales
at 180 lbs. and I can pick it up all by my lonesome, although
I sure wouldn't want to go very far with it!  :^0 Still, as others
have stated, when you start making an NST farm of that many
transformers, it becomes more practical to just get a pig.

David Rieben

----- Original Message ----- 
From: <ConorPerry@xxxxxxxxxxx>
To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
Sent: Thursday, November 12, 2009 4:49 PM
Subject: Re: [TCML] multiple miniature transformers


> I found a good source for NSTs in Craigslist and took advantage of it. 
> There was quite a stack to dig through, but I found a set of 8 matching 
> NSTs and bought the batch for $100.  They are 30mA @ 15,000volts (450va). 
> They are setup as two sets of 4, double stacked on a wheeled cart.  It's 
> too much for one person to lift, but easy for two people, so probably 
> around 100-120lbs.  I've run it at 4.5kva on a jacobs ladder.  Still 
> gathering parts for a larger Tesla coil.
>
> Wish I could find more 120mA @ 12,000volts monsters like I use on my 
> little coil.
>
> CP8071
>
>
> ----- Original Message ----- 
> From: "Neal Namowicz" <neal@xxxxxxxxxxxxxxxx>
> To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
> Sent: Thursday, November 12, 2009 6:51 AM
> Subject: Re: [TCML] multiple miniature transformers
>
>
> > This is definitely one I have a little experience with. I started 
> > accumulating nst's a while ago, and then began tying them together. At 
> > the moment, I'm up to 6, 9kv/30ma. I have them mounted on a 2' x 2' 
> > platform with casters. As my daughter's boyfriend and I were lugging it 
> > up the basement stairs for halloween, I too wondered why I just didn't 
> > get a small pig. However, there's still the issue of current control that 
> > I don't have to deal with, as I would with a pig. I would stick to using 
> > my variac, rather than switching them on individually, too. I prefer to 
> > ramp the power up slowly, just in case. I'm only using a safety gap for 
> > them at the moment, but I try to be conservative and not push them beyond 
> > 80-85% on the variac.
> >
> > Neal.
> >
> > ----- Original Message ----- 
> > From: "Paul Brodie" <pbbrodie@xxxxxxxxxxxxx>
> > To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
> > Sent: Wednesday, November 11, 2009 12:33 PM
> > Subject: Re: [TCML] multiple miniature transformers
> >
> >
> > Wouldn't 10 neon sign transformers and associated equipment be just about 
> > as bad as lugging around a pole pig or maybe even worse?
> > Paul
> > Think Positive
> >  ----- Original Message ----- 
> >  From: Chris Rutherford
> >  Hi All,
> >
> >  A couple of years back I made a TC powered by 4 parallel NSTs,
> >  providing 1KVA, which worked reasonably well.  I was thinking about
> >  extending the idea using 10 larger (identical) NSTs to provide 10KVA.
> >  I would individually protect each NST using something like a Terry
> >  filter, and also place a switch on the mains side of each transformer,
> >
> > _______________________________________________
> > Tesla mailing list
> > Tesla@xxxxxxxxxx
> > http://www.pupman.com/mailman/listinfo/tesla
>
> _______________________________________________
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