Re: Ballast bulk buy trial ballooon

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

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <FutureT-at-aol-dot-com>

>  Hi All
>  
>  I have a lot of x-ray transformer laminations of various sizes. In
>  particular I have enough laminations of size 22.75"L x 4"W to a form a bar
>  core of size 22.75"L x 4"W x 4"H. I am thinking about making a bobbin that
>  the core could slide through, and then wind the bobbin with very heavy 
wire.
>  Does anyone think that this is a worthwhile approach to build a variable
>  ballast? The big problems for me would be pulling heavy copper wire tightly
>  around the bobbin, and constructing a mechanism for sliding the core. 
>  
>  Godfrey Loudner 

Godfrey,

I think it's an excellent idea.  I've always wanted to modify my
homemade ballast to make a core-slider mechanism, but I
never got around to it.  I don't think it will be too difficult to pull
the heavy wire around the bobbin because copper is rather
soft and flexible.

John Freau