Re: Tune?

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

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Hollmike-at-aol-dot-com>

Just out of curiosity, why would you set a limit of 0.017uF for a 15/60 NST.  I
have heard of some using 4 times the impedance match value(resonant cap).  Now
understandably, this would tend to create losses due to high current, but if
the primary coil had sufficient impedance it would still work.  If someone were
to wind a 6 by 30 coil with, say 28g wire, a larger cap might be the best way
to allow it to be tuned properly. 
Mike 



>
> Hi Bill, 
>
> A 15/60 neon with a static gap can take up to a 0.017uF primary cap.  So 
> you should be able to just add more capacitance to lower the primary 
> frequency.  You can also add inductance to the primary with another coil 
> inline or even just a bunch of extra wire added.  These inductances are 
> pretty small and even a 3 foot length of wire adds considerable inductance. 
> A smaller top load will also raise teh secondary frequency to match up to 
> the primary. 
>
> Cheers, 
>
>    Terry 
>