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RE: Small number of turns in primary

Original poster: "SIMMS, F R. (JSC-EV4) (LM) by way of Terry Fritz <twftesla-at-uswest-dot-net>" <f.r.simms1-at-jsc.nasa.gov>

It seems that the idea of such a coil would be in some special geometry of
the primary and
secondary. Please send details.

Jay said if you want to build it then you need to build the seconday bigger
than his. Jay suggested acrylic tubes for the form. You can put
slots(notches) in the tubes to hold the wire. Plywood could be at the top
and the bottom to hold the tubes.  If you wanted to make it even cheaper you
could use PVC tubes and make a hexagon or such at the bottom and top to hold
the ends of the tubes with plumbing fixtures.  Smaller coils would arc too
much to get to a .6. It might be best to get a .33 coupling first before you
go for the gold. It will take 1 3/4 of a cycle to empty the cap at .33
according to finkelstein.  You can go to your public library and they will
get you a copy of any paper you want for free. You just have to ask.  

Jay also put his coil in a tank of sulfer hexafluride to keep down arcing
since his coil was so small. The tank wouldn't be necessary with a larger

Jay said you could even use house wire to make it cheaper.

Jay's paper shows how to get the coupling to what you want. He got that
technique from Electrical Mesurements by Laws. It is an old Mcgraw Hill