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Re: Refining 10kv -at- 23ma

Subject:  Re: Refining 10kv -at- 23ma
  Date:   Fri, 23 May 1997 13:44:31 -0400 (EDT)
  From:   Esondrmn-at-aol-dot-com
    To:   tesla-at-pupman-dot-com


In a message dated 97-05-23 04:57:28 EDT, you write:

<< Greetings from the East Coast
 >
 >Last night I set a personal record... an 11" discharge!!
 >
 >My current system is as follows;
 >2.375 x 10.5 inch secondary #30 enamel cotton wrapped
 >30 degree #6 solid primary 3.5 inch first turn 3/8ths spacing
 >4"x1" torroid (teenage mutant ninja turtle figure innertube :)
 >
 >.004ufd (calculated) stacked cap ; 10 layers .006 poly per plate all
 >dunked in min oil
 >
 >rq style cylinder gap with small squirrel cage fan 12 gaps at .018
 >(currently running 8 of em)
 >
 >10kv 23ma (yes, its one of those) furnace transformer
 >
 >All hookup wire is #6 stranded, and the only clips are to the primary,
 >and I have tried to make these as eff. as possible by soldering small
 >sections of brass tubing to the teeth of the clip for a higher surface
 >area connection. This is the classic layout, Transformer in par to
Cap,
 >and gap in between Primary and Cap.
 >
 >This is my latest cap and the most I have gotten out of the thing to
 >date. I get the feeling I am starting to push the limit of this
 >particular cap-trans match up as the transformer starts warming up
after
 >only about 30 secs of runtime. I am controlling the unit with a 20a
 >bench Variac and I got that output at wide open (130v) 
 >
 >What I would appreciate any input on would be;
 >Is this level of output good, average or paltry? I know I can get more
 >if I simply start adding neons (thanks Chip :) but I am really
 >interested in maximizing EFFICIENCY, what is the absolute most I can
get
 >out of a two coil system without simply throwing more power at it. Is
it
 >time for a rotary? (I am of course, looking for an excuse to build
one) 
 >Also, can anyone reccomend a reasonable Safety Gap width for this
power
 >level? I rather like my tough little OBIT, and I dont want to cook it.
 >
 >Thanks
  >>
Chris,

I would think the most you are going to ge out of a 10kv 23 ma
transformer
would be about 12" to 14".  You could certainly get more out of your
coil by
going to say a 12 or 15 KV, 30 ma transformer.  I set my safety gaps so
they
just fire ocassionally at full power.

Ed Sonderman