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*To*: tesla-at-pupman-dot-com*Subject*: RE: E-Tesla 6.11 strange prediction*From*: "Tesla list" <tesla-at-pupman-dot-com>*Date*: Mon, 21 May 2001 17:12:04 -0600*In-Reply-To*: <LOBBKNJDHNJJKPBJECPBAEKGDAAA.couturejh-at-worldnet.att-dot-net>*References*: <4.1.20010520163156.00a37bf8-at-pop.dnvr.qwest-dot-net>*Resent-Date*: Mon, 21 May 2001 17:42:59 -0600*Resent-From*: tesla-at-pupman-dot-com*Resent-Message-ID*: <wHfmlD.A.jhE.mfaC7-at-poodle>*Resent-Sender*: tesla-request-at-pupman-dot-com

Original poster: "Terry Fritz" <twftesla-at-qwest-dot-net> Hi John, Yeah! When I ran Matt's coil at 400 x 400 it only took 100+ billion floating point calculations to figure out :-))) Also see the field stress plot (volts per inch) I did later: http://hot-streamer-dot-com/temp/MattD2.gif This clearly shows the electrically dead space between the toroids as well as the high field stress areas where the streamers break out from. So far, E-Tesla6 has always worked extremely well. There is a small discontinuity that has about 4% error that was mentioned the other day but I think I know what that is... It is gratifying to know it works so well after all the days, and nights, spent on it. When it was a slow basic program, I set my alarm every two and a half hours during the night so I could wake up and load a new set of test data on all the computers in the house... I still am stunned on how fast the C programming helpers were able to get it to go now!! A full night's worth of testing can be done in minutes now... I should point out that Paul's new computer tools exceed E-Tesla by orders of magnitude! We just have to wait a bit longer before all that high powered math stuff gets down to the rest of us. 0:o)) Tesla coils used to be such a big mystery not too long ago, but now they are quickly becoming some of the most well understood machines around! But still much to do... Cheers, Terry At 12:20 PM 5/21/2001 -0700, you wrote: > >Terry - > >This is a great triumph for E-Tesla6. The picture is an excellect >illustration of the fields. It will be interesting to see what Matt's tests >show. This much capacitance reduction is most unexpected. But the unexpected >is the fascination about Tesla coils. > >John Couture > >------------------------------- > >-----Original Message----- >From: Tesla list [mailto:tesla-at-pupman-dot-com] >Sent: Sunday, May 20, 2001 3:42 PM >To: tesla-at-pupman-dot-com >Subject: RE: E-Tesla 6.11 strange prediction > > >Original poster: "Terry Fritz" <twftesla-at-qwest-dot-net> > >Hi John, > >I think the 57.3% is indeed correct. Look at the picture of Matt's coil at: > >http://hot-streamer-dot-com/temp/MattD1.gif > >The difference between his and most systems is that he has two terminals. > >The terminals are right over and under each other. This vastly reduces >their individucal free space capacitance's since they are right next to >each other. The energy stored between the two toroids is about zero so the >effective capacitance is far less than if they were significantly far >apart. This is an advantage of E-Tesla6 in that it figures these nasty >situations out :-)) > >Hopefully Matt will be able to fine the true frequency so we can see how >close the predictions are. I am putting my bets on 287253.72 Hz :-)) > >Cheers, > > Terry > > >At 01:34 PM 5/20/2001 -0700, you wrote: >> >>Terry, Matt, All - >> >>I did a check on Matt's coil using E-Tesla6 and found the toroid >capacitance >>reduction to be 57.3% compared to the approximate 20% reduction that >>E-Tesla6 showed for other coils. Is this correct? >> >>The basic resonance equation is >> Fr = 1/(6.283 sqrt(LsCs)) >>For Matt's coil Fr = 287730 hz Ls = 13.76 mh >> >>This gives Cs = 22.24 ph Cs = Ctor + Ccoil >> >>The Medhurst equation gives Ccoil = 8.14 ph >>for a 2.1 rad and 21.16 Lgt secondary coil. >>The coil self capacity (Ccoil) can also be found with the JHCTES program >>without using calcs. >> >>The effective capacitance of the toroids on the secondary coil is >> Ceff = Cs - Ccoil = 22.24 - 8.14 = 14.1 pf (Ceff) >> >>The isotropic (free space) capacitance of the toroids can be found by the >>equations shown on my web site (Secondary Terminal) or by the Sphere/Toroid >>graph I show in my books. >> Toroid #1 3.25 x 11.25 (OA) = 13.00 pf >> Toroid #2 4.25 x 18.00 (OA) = 20.00 pf >> Total isotropic capacitance = 33.00 pf (Ctot) >> >>The percent of capacitance reduction for the toroids when placed on the the >>secondary coil is >> % Reduction = (Ctot - Ceff)100/Ctot >> = (33.00 - 14.1)100/33.00 = 57.3% >> >>This 57.3% reduction is much greater than the approx 20% found by E-Tesla6 >>for other coils. >> >>It will be interesting to see what the actual resonant frequency tests >show. >>There should be two types of res freq tests. >> >> Test #1 Low test current in sec coil by feeding the coil at the bottom >>with a function generator. The res freq is found with a freq counter. >> >> Test #2 High current in sec coil by operating TC at high voltage but >>with only corona output. The res freq is determined using a storage scope >>and Terry antenna probe. This res freq should be lower then in Test #1. >> >>Comments welcomed. >> >>John Couture >> >>------------------------- snip >

**References**:**RE: E-Tesla 6.11 strange prediction***From:*"Tesla list" <tesla-at-pupman-dot-com>

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