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This don't make sense.



Original poster: "Garry F. by way of Terry Fritz <twftesla-at-uswest-dot-net>" <garryfre-at-pacbell-dot-net>

Recently, I got two 12/60 NST's (One fried immediately but they said they would
replace it because they weren't sure about it) and the other I decided to try
on this .017 uF doorknob cap I have and so I started up this tesla program on
the internet written in java and it says I need 70+ windings on the primary and
I don't believe it. I've never heard of a tesla coil that needed over 22
windings. This compared with the program saying I needed only ~16 windings for
Terry's .0061 cap with the 12/30 NST.
 
The setup I had that worked pretty well was with a 12/30 nst and ~16 windings
of 12 guage wire on a flat primary with four windings/inch center diameter 6".
 
The secondary is 3.5" * 17 3/4" wound with #28 guage wire from ESI. The program
says the secondary resonant frequency is about ~255mhz. I not sure of the
measurement unit mhz, it could be khz.
 
I tried tuning it with the 12/60 but all I got was a lousy 1" spark compared to
using Terry Fritz EMMC at .0061uf I got two foot sparks with a 12/30.
 
I don't wanna try Terry's EMMC at 12/60 because I doubt it would take that kind
of punishment and would probably be way outta tune anyway.
 
At anyrate, can someone run these figures through thier program and tell me
what their program comes up with for windings on the primary?