Re: Retuning with bigger cap?

To: tesla-at-pupman-dot-com
Subject: Re: Retuning with bigger cap?
From: "John H. Couture" <couturejh-at-worldnet.att-dot-net> (by way of Terry Fritz <terryf-at-verinet-dot-com>)
Date: Tue, 17 Nov 1998 19:53:39 -0700
Approved: terryf-at-verinet-dot-com


  Bart -

  You need the JHCTES computer program. It does everything correctly and
automatically keeps your coil design in tune when you make changes. It is
the only computer program presently available that when you use it to
design your TCs it is almost impossible to go wrong. It coordinates and
does all the calculations for the 46 major TC parameters in a single
comprehensive program. 

  John Couture

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

At 08:01 PM 11/16/98 -0700, you wrote:
>Original Poster: "Barton B. Anderson" <mopar-at-uswest-dot-net> 
>
>Sam, All,
>
>Tesla List wrote:
>
>> Original Poster: Sam Laur <slaur-at-sekunda.pp.utu.fi>
>>
>> <snip>But then, it turned out to be unnecessary anyway,
>> I talked with Mike Hammer on IRC about it; he pointed me to WinTesla, and
>> it turned out that the resonant frequency wasn't what the Javascript
>> Tesla Coil Calculator said (about 180 kHz) - but more like 320 kHz. With a
>> small top load, this seems to match closely the frequency I originally
>> measured from the vicinity of the coil.
>
>The Java Calculator only calculates the frequency according to the length
>of wire
>and does "not" add in Ctop. It's just a stand alone calculation. Reason I'm
>replying is a question to the list.
>
>Do you guys use this calculator and if not, should I remove it?  Jerry Gore
>wrote
>this a couple years ago, but I myself don't use it. The only reason I have
>it up
>at my web site is I have had a few respond off list that they do use it. My
>concern is this. If one does not account for Ctop (as well as other
>variables) and
>rely's solely on a length of wire calculation, they are going to be surprised
>(among other things) that the coil is not near the frequency they were
>expecting.
>How many of us run without top loads anyway?  I may remove it just because
the
>Java Calculator is not maintainable by me.  It strongly needs updating and
>I have
>"not" the expertise in Java to do so.  Dear I hear any votes out there to
>"trash
>it"? I know most of you could care less, but is anyone interested in
>keeping it?
>Maybe that's a more appropriate question to how I feel about it.
>
>Bart
>
>
>
>
>