RE: RE: Xfmrs

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Brian" <brianv@xxxxxxxx>

I was reading your thread, concerning designing a transformer. I have been
designing transformers for many years, you mentioned you worked at metal
shop and could punch out the transformer laminations. The laminations in a
transformer are usually a silicone type magnetic steel, although there are
many different types of magnetic steel. And when you punch them out extreme
care must be taken so absolutely no burs show up on the newly stamped
lamination, any shorting of the laminations causes increased excitation
currents and wattages. Under a no load condition when the core is excited to
its designed flux capacities the core will over heat and cause lots of
troubles. The core of a transformer is never fully excited under full load.
 If you never notice that when a transformer is run with no load the
windings fell relatively cool as compared to the core, but if you load it
then the opposite happens and the windings get hot with respect to the core

  If you need assistance designing a special transformer let me know and I
can help you with it.

Brian



-----Original Message-----
From: Tesla list [mailto:tesla@xxxxxxxxxx]
Sent: Friday, March 02, 2007 5:37 PM
To: tesla@xxxxxxxxxx
Subject: RE: RE: Xfmrs

Original poster: Yurtle Turtle <yurtle_t@xxxxxxxxx>

If you just want something that's more than an NST but
less than a pig, 120 volts input, small enough to
carry/roll around easily, consider a PT:

http://www.hot-streamer.com/adam/garage/pt_14.4kV_1.5kVA_1.jpg

There's one on eBay right now for $25, but it's 7,200
volts. You prolly want 14,400. They can be found for
$100 or less. I just got two 25 kV PT's for free!

And if you're thinking a PT ain't got what it takes,
based on a post several years ago, I believe this was
fed by a PT:

http://hot-streamer.com/pool/GARAGE~1.JPG

If you just want to build a mini-pig then go for it.
But if you want portability, I doubt you'll be able to
get something as powerful, small, light as a PT.

Adam


--- Tesla list <tesla@xxxxxxxxxx> wrote:

 > Original poster: "Anthony R. Mollner"
 > <penny831@xxxxxxxxxxxxx>
 >
 > My goal would be to design a transformer at 120 volt
 > / 15 amp input. The 240
 > volt lines are such a hassle to set up when moving
 > the Tesla coil around and
 > it would be beneficial to me to make a xfmr that
 > would be as potent as is
 > obtainable from a wall socket. I work at a sheet
 > metal shop so I should be
 > able to have the core sheets punched out to any
 > dimensions that I decide to
 > design. Maybe some one out there might be interested
 > in teaming up on this?




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