[TCML] first coil

[Mddeming at aol.com]

Hi Dr. R,
 
I think there is a problem with your decoding of the texting  shorthand:
 
I believe
 "s/d 4.4" means secondary diameter is 4.4 inches,
 "s/h 16" means secondary height is 16 inches, 
 "topload r/d 4" means minor diameter of 4 inches,
 "overall dia14" means overall diameter OF THE TOPLOAD is 14  inches.
 "primary dia .25 spacing .38" means primary is made of 0.25  in copper 
tubing with 0.38" between turns,
 "hole dia 5", angle30 deg,20' of coil"means primary inner diameter is  5 
inches, 
 using 20 ft of primary tubing in a 30 degree inverted cone.  

There may be too little tubing for much primary. The coupling may be  too 
high due to closeness.
 
Matt D.
 
 
 
In a message dated 4/28/08 7:30:35 P.M. Eastern Daylight Time,  
resonance at wildblue.net writes:

With a  14" dia coilform you definitely DO NOT use an inverted cone primary.
This  would give you severe over-coupling and could lead to "racing sparks"
which  will destroy your sec coil.

Use a flat spiral on primary.

Run  all your data thru JAVATC and you will get the correct design factor on
the  first try.  No guessing involved.

If you are in the states and  want to email your tel off list I will call you
and help you thru JAVATC  the first time.  After that, it is easy and very
accurate.

Dr.  Resonance




On Mon, Apr 28, 2008 at 12:40 PM, douglas smith  <eyemfedup2 at yahoo.com>
wrote:

> hi i have some specs to  show you could you give me an idea how it looks
>  12kv 30ma  nst  ,primary dia .25, spacing .38, hole dia 5", angle30
> deg,20'  of coil.    secondary, 26awg, 940 turns, s/h 16", s/d 4.4. top  
load
> r/d 4", overall dia14"
>  will use static spark gap  w/fan ,not sure on caps yet
>  thanks
>
>
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