RE: JHCTES...and my 6" disruptive system...

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

Original poster: "John H. Couture" <couturejh-at-mgte-dot-com> 


Brett -

I don't have a log of Tesla coils that were tested and found to agree with
the program. In fact I didn't think this was important. However, I admit
this would be an interesting record of Tesla coilers who are not active now.
Most of those records have been thrown out. Some of these coilers are still
active, Terry Fritz, Bert Hickman, Kurt Schraner, Malcolm Watts, Dr
Resonance, Bert Pool, Ed Wingate, Ed Sonderman, and many others.

These coilers also helped me to fine tune the JHCTES program. Back in the
late 1980's when I was developing the JHCTES program there was very little
TC design information available. Tesla coil design and building was mostly a
trial and error operation. There were other TC programs around but I believe
the JHCTES was the first TC program that kept all the parameters in tune
when changes were made. This was accomplished by selecting the input and
output parameters so that the designer could not input variables that made
it impossible to tune the TC. The program started out in a very user
unfriendly manner because it just tossed out input variables that could not
give a tuned TC which aggravated many coilers. This was quickly replaced by
a more user friendly program that used carefully selected input variables to
prevent the designer from inputting numbers that could not give a tuned
system.

Bart Anderson's JAVATC10 program has improved on this type of program by
adding more parameters and giving them more accuracy. Paul Nicholson was the
coiler who took Tesla coils to new heights in theoretical design. However,
the JHCTES program still gives you fast and ballpark numbers that can save
you design time for the major parameters.

John Couture

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


Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Sunday, February 01, 2004 7:51 PM
To: tesla-at-pupman-dot-com
Subject: JHCTES...and my 6" disruptive system...


Original poster: Brett Miller <brmtesla2-at-yahoo-dot-com>

John,

--- Tesla list <tesla-at-pupman-dot-com> wrote:
  > Original poster: "John H. Couture"
  > <couturejh-at-mgte-dot-com>
  >
  >
  > Brett -
  >
  > You can find the correct toroid for your TC with the
  > program shown below.
  > You can get more data from JAVATC but the JHCTES is
  > quicker.
  >
  > For the past 15 years whenever a coiler posted his
  > TC specs on the List I
  > would run the numbers thru the JHCTES TC computer
  > program.

Really fun stuff!  I'm glad you have been doing that.
Have you been keeping a log of the above analysis?  I
would be interested in keeping a copy in my personal
archives.  Such information would be extremely
valuable, especially considering the 15 year time
frame of the "study".

  > I was especially
  > interested in the real world test numbers to see how
  > they compared with the
  > program. This is the true indication of the worth of
  > a TC computer program
  > when it can reasonably predict how the TC will
  > perform.

Yes.  Not to mention the true indication of the worth
of any scientific theory.  It must be able to make
predictions about nature that can be tested by
experiment and observation.

  > The problem was that
  > the tests the coiler made did not always agree with
  > the program. This means
  > either the program is wrong or the test are wrong.
  > In the past it was
  > difficult to convince the coiler that the program
  > may be correct and that
  > his test were not.

Luckily we have this great source of peer review here
on the TCML...plus a few people who have powerful and
accurately calibrated test equipment in their labs.

  >
  > I ran the numbers from your specs and found that
  > they were very close to the
  > JHCTES program. The inputs I used were
  >
  >   Primary     .0124   8.00   00   7.1
  >
  >   Secondary  3.13   1031   42.96   00   18.7
  >
  > The above is for the 4" x 17" toroid.

Perhaps with my next disruptive coil project, JHCTES
will provide a good size calculation for a "big arcs"
toroid.

  >For other
  > toroids you only have to
  > change the input for the secondary terminal and
  > click "Calculate". The
  > computer will change all of the proper outputs to
  > keep the TC in tune. If
  > you run the above input numbers in the program you
  > will find that the
  > outputs are amazingly close to what you found in
  > your tests. The original
  > program showed .191 for the coupling. This is still
  > being studied. It is
  > obvious that your skills (5 years ago) in building
  > and testing Tesla coils
  > were very good.
  >
  > The program can be found at    http://mgte-dot-com
  >
  > Click on Tesla then JHCTES (Books). At bottom of
  > book page click on JHCTES
  > Ver 3.42
  >
  > John Couture

Thank you for your compliments regarding my design
skills.  I would like to think they were the primary
contributing factor to the great success with my 6"
system...if only I didn't know that luck was probably
an equal factor back then.  I know a little bit more
than I did 5 years ago (thanks in no small part to the
TCML and all you guys excellent work with software
development) so perhaps my future coils will be able
to contribute more to our collective learning process.
   I will definately utilize the power of JHCTES in my
upcoming projects (including a 12" or large disruptive
coil, an 833A VTTC, and more) as well as many, if not
all of the other TC design packages.

Thank you for taking the time to run my specs through
JHCTES.  I am quite happy with the performance of
my 6" system for the power levels it processes.
When I inevitably scale up to a larger diameter
secondary and higher power tank, I will be consulting
your software for some of the design specs.  Thanks
again.

-Brett
KI4DBK
http://www.hot-streamer-dot-com/brett