[TCML] Secondary to toriod ?
bartb at classictesla.com
Sun Aug 24 18:54:38 MDT 2008
After reading my own description of what I did, I thought it best to
just show some pics.
BTW, for those thinking (OMG, metal screws attaching Plexiglas to sec
form!). No corona, no arcing, no problems (and mechanically strong!).
> Hi Stanley,
> I use a carriage bolt (6"L) on my 8.5" coil. I have a Plexiglas cap on
> top of secondary form. The underside of the bolt is gooped to help
> prevent any internal flash-overs. The secondary winding runs along the
> topside to the bolt (same as Jonathon's).
> What I wanted to point out is that the bolt will need to mechanically
> support the weight of the toroid. In my case, I'm using a spun Al 9" x
> 30" toroid, so it's a bit on the heavy side. What I did was to drill a
> center hole for the carriage bolt in the middle of a 4.5" pvc cap and
> simply used the carriage bolt nut to secure it to the Plexiglas. The
> toroid is fitted with a similar pvc cap. When I install the toroid, I
> simply align the carriage bolt through the center hole in the toroid
> and let it slide down. The toroid and secondary caps find eachother.
> One slides into the other providing the mechanical support and the
> carriage bolt electrically connects the toroid (no strain on the
> carriage bolt itself).
> Hope I described that well enough? Basically, the bottom surface of
> the pvc cap provides a large surface area with which the weight is
> distributed over the flat Plexiglas main top cap. Worked out great!
> Take care,
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