Re: NST Core wanted, primary in tact

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Steven Ward by way of Terry Fritz <teslalist-at-qwest-dot-net>" <srward16-at-hotmail-dot-com>

I may have been the one who used the NST core for the filament transformer.
There are a few problems.  1), if using a france core (which separates in 2 
halves) it will buzz and vibrate like hell unless you were to glue or weld 
the core together.  2), they are really too big!  Maybe if you wanted to 
drive like 4-6 833A filaments it would be worth it.  I would suggest a MOT.
It will run quite (since the core it already welded), and will look clean 
when your done.  There are also light ballasting transformers that will 
work if rewound.  I thing Marc Metlika (sp? sorry!) did this.

Here is the page from my site with the homemade (kinda ;)) transformer.

http://hot-streamer-dot-com/srward16/304TLfilament.htm

Steve Ward

>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: tesla-at-pupman-dot-com
>Subject: NST Core wanted, primary in tact
>Date: Sat, 21 Jun 2003 11:52:11 -0600
>
>Original poster: "Jim Mora by way of Terry Fritz <teslalist-at-qwest-dot-net>" 
><jmora-at-jetlink-dot-net>
>
>Hi All,
>
>Does anyone have a depotted 120V NST with a blown secondary they would like
>to sell? I'm building a VTTC and my 10V filament transformer is not up to
>the task of adding another 833 or so, or so.. (why is it always more
>power:') ? Now I'm thinking of using  four inch pvc verses my 3" polystyrene
>secondary (#28awg).
>
>I would like to gut the secondary windings and try 10 turns or so of #6 as I
>seem to remember one our esteemed, experienced colleges has suggested will
>produce considerable amperage (well insulated from the core of course).
>
>Flames and suggestions always welcomed.
>
>Regards,
>Jim Mora
>Ojai, Ca. US