Re: I've noted a similar odd anomily in one of the tesla calc programs.Was Tesla Coil Blunderbusses

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

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

If the fine tune field told you to increase 300%, then I would have
expected an "input" factor to
be grossly off. But it sounds to me like the program may have a calculation
glitch possibly due to
"my programming" or a browser script handling problem. I've never seen this
occur, so I'm
obviously interested. The percentage is a comparison between PriFr and
SecFr. Should you happen to
have those particular specs around, I'd like to recreate this. If I can
recreate it, I can fix it.
Also any other details like which browser your using. Thanks for bringing
this to my attention.
Reply off list if you can.

Take care,
Bart A.


Tesla list wrote:

> Original poster: "Garry Freemyer by way of Terry Fritz
<twftesla-at-uswest-dot-net>" <garry-at-ndfc-dot-com>
>
> Hmm, I've noticed something similar on a web site that had a program to
> calculate your tesla coil resonant frequency and tuning points. I don't have
> the URL with me right now, but it had a place to enter your dimentions and
> wire guage. It had a chart to look up wire diameters.
>
> I noted that it was showing that I needed a huge number of windings on the
> primary, on the order of 78 windings!! I had expected a figure between 8 and
> 18. It had a box to enter the number of primary turns and it was supposed to
> give you a percentage to increase and decrease it. It also had a fine tune
> button. I found that if I entered say 18 turns, it would say I needed to
> increase it by a huge number. I got a tune point of about 78 turns if I
> recall correctly. For giggles I entered ONE turn and it said to increase it,
> so I entered 3 and it said I needed to increase it 300% so I entered nine
> and it said I was in tune with the secondary at 9.3 turns.
>
> I don't know exactly why this program did this, but I learned that I needed
> to start at one or two turns and go up from there, or I would end up with it
> telling me I needed a LOT of turns.
>
> <Snip!>
>
> Original poster: "by way of Terry Fritz <twftesla-at-uswest-dot-net>"
> <FutureT-at-aol-dot-com>
>
> In a message dated 4/9/01 8:54:54 PM Eastern Daylight Time, tesla-at-pupman-dot-com
> writes:
>
> > >I have seen exactly that effect. I started with a smoothly running
> >  >coil, then tuned the primary down to enhance the lower sideband
> >  >response. Operation went from smooth to erratic but the sparks
> >  >increased considerably in length (about 20% from memory).
> >  >
> >  >Regards,
> >  >malcolm
>
> Malcolm, all,
>
> Snip ..