Re: Coil sensitive to primary tapping

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

Original poster: "Gerry Reynolds" <gerryreynolds-at-earthlink-dot-net> 

Aaron,

Also, try Bart's JAVATC program.  Its will get you in the ballpark.

Gerry R

 > Original poster: Bart Anderson <classi6-at-classictesla-dot-com>
 >
 > Hi Aaron,
 >
 > The sensitivity may be the how much the frequency changes the inductive
 > change on the primary. Some coils have a narrow range and some are much
 > more forgiving. This is in the tank LC. It may also be that you don't have
 > enough turns and are on the low end of inductance. You gave very little
 > information to examine the coil (example, a 15 turn primary could be any
 > wire size and any inner diameter or outer diameter). More info would be
 > helpful for someone to analyze where your at relative to we think you
 > should be. Or if you want, you can simply do trial and error by adding
more
 > turns and seeing if this helps.
 >
 > Take care,
 > Bart
 >
 > Tesla list wrote:
 >
 > >Original poster: "Aaron Aab" <striker754-at-earthlink-dot-net>
 > >Guys,
 > >
 > >My coil is extemely sensitive to the primary tap. It refuses to make any
 > >sparks if you move it off the last coil or so. It works best on the very
end
 > >of the last one.
 > >
 > >Currently it is a 9kV/60Ma, 15 turns, 30X6.5"secondary, 7x24" dryer duct
 > >toroid, 0.025uf/12kV capacitance
 > >
 > >Any ideas?
 > >
 > >Aaron
 > >
 > >
 > >
 > >
 >
 >
 >