Re: First Spark

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Antonio Carlos M. de Queiroz" <acmdq-at-uol-dot-com.br> 

Tesla list wrote:
 >
 > Original poster: "Rich" <rdjmgmt-at-socket-dot-net>
 >
 > Well my first try at a coil worked a little. It is 15Kv 30ma NST and the
 > first try was at 8 ½ in.  I do have a question. Should the bottom of the
 > secondary coil be even with the primary, above or below it?

This essentially just changes the coupling coefficient. Adjust for best
results.

 >   I had the torrid up too high at first, I had to bring it to where the
 > lower side was just below the top of the secondary before I got any sparks.

This changes the secondary capacitance and affects the tuning.
Affects also the shielding of the top of the secondary coil, to avoid
corona damaging the wire there.

 > The torrid is 4” flex pipe mounted on a 12” x .032 alum plate, overall 20”
 > dia.  Are there any hard and fast rules on setting the torrid?

Just that the name is "toroid". "Torrid" is something very hot for me...
http://dictionary.reference-dot-com/search?q=torrid
http://dictionary.reference-dot-com/search?q=toroid

Antonio Carlos M. de Queiroz