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*To*: tesla@xxxxxxxxxx*Subject*: Re: Information Unlimited BTC30 coil*From*: "Tesla list" <tesla@xxxxxxxxxx>*Date*: Fri, 05 Jan 2007 20:50:17 -0700*Delivered-to*: testla@xxxxxxxxxx*Delivered-to*: tesla@xxxxxxxxxx*Old-return-path*: <tcmlmod@xxxxxxxxxxxxx>*Resent-date*: Fri, 5 Jan 2007 20:50:15 -0700 (MST)*Resent-from*: tesla@xxxxxxxxxx*Resent-message-id*: <cywSO7hB8CE.A.Q5C.3xxnFB@chip1>*Resent-sender*: tesla-request@xxxxxxxxxx

Original poster: "Barton B. Anderson" <bartb@xxxxxxxxxxxxxxxx> Hi Jay,

http://www.classictesla.com/FormulasForTeslaCoils.pdf

http://www.classictesla.com/java/javatc.html

Take care, Bart ------------------------------------------------------------------------------------------------- J A V A T C v.10 - CONSOLIDATED OUTPUT Friday, January 05, 2007 05:38:36 PM Units = Inches Ambient Temp = 68°F ---------------------------------------------------- Surrounding Inputs: ----------------------------------------------------

0 = Wall Radius 0 = Wall Height 0 = Ceiling Radius 0 = Ceiling Height ---------------------------------------------------- Secondary Coil Inputs: ---------------------------------------------------- Current Profile = G.PROFILE_LOADED 1.75 = Radius 1 = Radius of the lower end of secondary 1.75 = Radius 2 = Radius of the upper end of secondary 20 = Height 1 = Height above ground of the lower end of secondary 29.75 = Height 2 = Height above ground of the upper end of secondary 430 = Turns = I calc'd the turns for you based on 9.75" length secondary 24 = Wire Awg ---------------------------------------------------- Primary Coil Inputs: ---------------------------------------------------- 2.5 = Radius 1 = Inside radius of flat primary (I guessed at a 5" diameter) 5 = Radius 2 = Outside radius of flat primary (what would equal 5 turns)

20 = Height 2 = Height of outside radius (obviously the same for a flat coil) 5 = Turns 0.25 = Wire Diameter 0.006 = Primary Cap (uF) = Cap size close to what is need for this coil

0.2 = Lead Diameter = I assumed a diameter of conductor ---------------------------------------------------- Top Load Inputs: ---------------------------------------------------- Toroid #1: minor=1, major=6, height=31.5, topload = I guessed at the toroid

---------------------------------------------------- Secondary Outputs: ---------------------------------------------------- 793.13 kHz = Secondary Resonant Frequency 90 deg° = Angle of Secondary 9.75 inch = Length of Winding 44.1 inch = Turns Per Unit 0.00257 inch = Space Between Turns (edge to edge) 394 ft = Length of Wire 2.79:1 = H/D Aspect Ratio 10.11 ohms = DC Resistance 23522 ohms = Forward Transfer Impedance 23260 ohms = Reactance at Resonance 0.48 lbs = Weight of Wire 4.668 mH = Les-Effective Series Inductance 4.383 mH = Lee-Equivalent Energy Inductance 5.014 mH = Ldc-Low Frequency Inductance 8.627 pF = Ces-Effective Shunt Capacitance 7.922 pF = Cee-Equivalent Energy Capacitance 16.447 pF = Cdc-Low Frequency Capacitance 3.3 mils = Skin Depth 4.617 pF = Topload Effective Capacitance 72 ohms = Effective AC Resistance 323 = Q ---------------------------------------------------- Primary Outputs: ---------------------------------------------------- 785.54 kHz = Primary Resonant Frequency 0.96 % high = Percent Detuned 0 deg° = Angle of Primary 9.82 ft = Length of Wire 0.25 inch = Average spacing between turns (edge to edge) 0.75 inch = Primary to Secondary Clearance 5.98 µH = Ldc-Low Frequency Inductance 0.00589 µF = Cap size needed with Primary L (reference) 0.861 µH = Lead Length Inductance 31.364 µH = Lm-Mutual Inductance 0.181 k = Coupling Coefficient 5.52 = Number of half cycles for energy transfer at K 3.44 µs = Time for total energy transfer (ideal quench time) Tesla list wrote:

Original poster: jhowson4@xxxxxxxxxxx Oh yea I'm Jay by the way hey that rhymesWell he did not buy the kit you see. It wasleft in the closet thing from the previousteacher and he did not know what to do with itso he stuffed it back in the closet then I foundit and asked if I could have it so afterthinking it over for like a month he gave it to me. YAYThe secondary has a 3.5in diameter and the wiresection is 9.75in tall and has 24 gauge wire.I made the primary but it is weird. There is abig hole with 6 turns of 12gauge wire that arebunched together then that wire goes into 4 turns of small copper tubing.How do I calculate the inductance for that?<http://i139.photobucket.com/albums/q295/JHowson/almostcompletedprimarycoil.jpg>http://i139.photobucket.com/albums/q295/JHowson/almostcompletedprimarycoil.jpgI did not trim the copper tubing yet I will do that after I am done I guess. The RF filter is 24 turns of 24 gauge wire I put together the spark gap, capacitor and the weird case thing.<http://s139.photobucket.com/albums/q295/JHowson/?action=view¤t=1167946710.pbw>http://s139.photobucket.com/albums/q295/JHowson/?action=view¤t=1167946710.pbw-------------- Original message -------------- From: "Tesla list" <tesla@xxxxxxxxxx> > Original poster: Mike > > I don't know your name, but hi. > It was cool of your teacher to give you this kit to > build. It sort of detracts from your education on the design > aspect, but hey....if he is willing to fork out too much $$ (based on > my awesome scavenging skills lol) to further your education....I'm > all for it. There's no substitute for winding your own > secondaries...and I'd replace that filter choke with a 'Terry filter' > as soon as you can. Another improvement would be to add an > additional spark gap or two.....AFTER you get it going. Just that > for a static gap system, a few gaps in series will quench > better. You didn't mention the wire guage used on t he sec ondary, > so I will have to make some assumptions for the moment. It would > seem that there is a possibility of tweaking this system......but > build it as is for now. > > Original poster: jhowson4@xxxxxxxxxxx > > > Hello All > > 2nd day back to school and I am still on break.=) > > My Physics teacher gave me the BTC3 kit today. YAY > > So here are pictures of what it comes with. > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam protection around > http://mail.yahoo.com > >

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