Re: performance/tuning question

[Esondrmn-at-aol-dot-com (by way of Terry Fritz <twftesla-at-uswest-dot-net>)]

In a message dated 7/25/00 2:20:36 PM Pacific Daylight Time, tesla-at-pupman-dot-com 
writes:

<< Hello,
 
 I was wondering, if I was to build a TC with the tank cap double or triple
 the value derived from the formula used to match it with the impedance of
 the power supply (say .01ufd or .015ufd instead of the matched value of
 .005ufd) and decreased the primaries inductance appropriately so that the
 primary and secondary would both resonate at the same frequency.  What
 affect would that have on the system and output compared to starting with
 the cap matched to the power supplies impedance.  Has anyone done this and
 would this have much affect on the streamer length and "look" (whiter but
 less smooth, etc.)?   BTW this would be in a rotary gap setup if that made a
 difference.
 
 Thanks experienced ones,
 John M.
  >>
John,

It depends on the power supply.  If for instance, you are using a 12 kv, 30 
ma transformer and then double or triple the size of the primary capacitor, 
the coil will probably perform poorly because the transformer cannot supply 
enough current to charge the new larger cap up to full voltage.  If you are 
using a supply that can supply a few hundred ma, the coil will perform much 
better.  The average power going into the system will be higher and the 
streamers will be larger.  This assumes retuning and that the secondary can 
handle the increased power levels.

Ed Sonderman