RE: JHCTES Ver 2.3 Program (was More Coupling...)

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

Original poster: "John H. Couture by way of Terry Fritz <twftesla-at-uswest-dot-net>" <couturejh-at-worldnet.att-dot-net>


Bart, All -

You can find the coupling factor, mutual inductance, and many other TC
parameters with the JHCTES Ver 2.3 computer program. It is the only program
prensently available that calculates these parameters and coordinates them
with 46 TC input and output parameters. By coordinating the parameters the
TC design is always in tune and eliminates possible coiler errors. The
program has stood the trial of time.

John Couture

-------------------------------

-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Tuesday, December 12, 2000 7:27 PM
To: tesla-at-pupman-dot-com
Subject: Re: More Coupling...


Original poster: "Barton B. Anderson by way of Terry Fritz
<twftesla-at-uswest-dot-net>" <tesla123-at-pacbell-dot-net>

Hi Ed,

Measured K on my flat primary for my 12.75" x 45" coil.
The flat primary is 16.5"ID, 0.375"wire, 0.625" spacing (c-c) (or 0.375
edge to edge), and 11.6
turns in the case of using my 0.06uF cap setup.

I used a method of measuring I believe Terry posted a couple years ago.

Measured current of primary using a hair dryer in series (10.95A). Then
measured secondary
voltage (secondary + 1uF cap + 18k ohm in series) at 2.59V.

Mutual Inductance M = V / (377 * I) or 2.59V / (377 * 10.95A) = 627.4 M

K = M / sqrt(Lp * Ls) = 627 / (107.13uH * 87.6mH) = 0.205 K

Anyway, that's K on that day. I am only aware of one program that calc'd K
but it was
preliminary and I haven't heard anything about it in a "long" time.
Measuring is pretty easy and
can be done with a simple DMM.

Bart

Tesla list wrote:

> Original poster: "Ed Phillips by way of Terry Fritz
<twftesla-at-uswest-dot-net>" <evp-at-pacbell-dot-net>
>
> A friend of mine built such a high k system at TRW, in connection with
> a million-volt (really 10^6 volts) pulse project.  It worked OK but was
> a lot of work to get set up right.  Do you know of any approximate
> method for calculating the mutual inductance for a flat primary?  I
> suppose one could do it by computing M for each of the turns and then
> summing it, but that sounds like a lot of work and have never tried it.
>
>         I see a lot of fellows using flat primaries, and wonder how much
> coupling they actually get.
>
> Ed