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RE: Poking wires into secondary



Original poster: "Mccauley, Daniel H" <daniel.h.mccauley-at-lmco-dot-com> 


This configuration works fine for SSTC and VTTC coils as well as small
conventional spark gap
coils.  However, with higher power spark gap coils, there is always the
risk of arcing from the top through
the inside of the form.  Having an RF ground inside the form at the
bottom just increases this possibility.

The Captain



 > All,
 >      I know that it is a big no-no to poke the end wires of
 > the secondary
 > inside the former, but what if you only have the bottom wire of the
 > secondary (the one that will be grounded) going inside the
 > secondary?  Do
 > you have to put some kind of end cap inside the former above
 > where the wire
 > enters the secondary to add to the breakdown strength of any
 > voltage paths
 > to the wire?  What I am wanting to do is to connect the bottom of the
 > secondary to a copper bolt at the very bottom of the fitting
 > that screws
 > into the secondary.  Then I can connect the ground strap to the bolt
 > underneath my coil and attach it to the earthed ground rod.
 > See my website
 > for a little better visual description.  So basically, would this
 > configuration result in disaster or not?  Thank to everyone
 > in advance!
 >
 > Jeremy Gassmann
 > Cincinnati, Oh
 > http://jeremyee.tripod-dot-com
 >
 >
 >