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Tune?
Original poster: "Bill Bockman by way of Terry Fritz <twftesla-at-qwest-dot-net>" <billb187-at-hotmail-dot-com>
I have a 30" tall 6" diameter secondary coil. The secondary coil is wound
with #22 gauge magnet wire. My step up xformer is a 15kv 60ma neon sign
transformer. The primary coil was made of 1 gauge stranded wire, 9 turns.
My coil has an air blast gap and beer bottle capacitors that had an
estimated capacitance of 0.0073uf.
THIS SETUP PROVED NOT TO WORK.
In re-examining my plans I found that if my coil was 27.5" tall, I would
need a higher capacitance value, one in the range of 0.0106uf. More primary
turns would also be necessary (15).
All of this information I gathered through using Tesla Coil CAD. My
secondary coil is 30" tall, the program says I will need more than 15
primary turns (and doesn't help me more than telling me that) because my
secondary inductance frequency is too high, above 144khz.
What I am asking is can I use the secondary coil I have built? If so what
type of primary design would be effective?