Re: [TCML] first coil

["DC Cox" <resonance@xxxxxxxxxxxx>]

I agree.

He should just run the data on JAVATC and get it right before he spends
countless hours making corrections.

It's a free program and highly accurate.

Dr. Resonance




On Mon, Apr 28, 2008 at 7:54 PM, <Mddeming@xxxxxxx> wrote:

>
> 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@xxxxxxxxxxxx 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@xxxxxxxxx>
> 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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