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Re: Scroungein' (fwd)


On Wed, 21 Apr 1999 11:48:12 -0600 Tesla List <tesla-at-pupman-dot-com> writes:
>Original Poster: "Andy Cleary" <gemware2-at-dreamscape-dot-com> 
>
>I am constructing a Tesla Coil (my first one) almost identical to 
>'Project
>1'.  I used 28 AWG magnet wire, and wound 18 inches on the 4" PVC.  My
>static gap is just two brass bolts on brass angle brackets, and the
>capacitor is just a Glass dielectric beer bottle capacitor (like the 
>one
>currently being discussed on the list).  The toroid that I am using, 
>after
>some research, is a 4" diameter tubing with a 5" center(of the 
>toroid), and
>covered with metallic flue tape.  The primary coil that I plan on 
>using is a
>flat helix, and I plan on using 25' of the 1/4 inch tubing (about 8 
>turns I
>figure).  Although I have not tested the coil yet, I figured I would 
>tell
>you the specifications for my similar coil.  I hope to finish the coil 
>by
>the end of the week, and I will let you know how it turns out.  I am 
>by no
>means an expert, but I thought that I would let you know what I have 
>done.
>
>-Andy C.

Andy,  depending on your input voltage/current, you may want to include
extra turns in the primary just in case. I use something like twelve of
the seventeen turns on mine, with a similarly sized coil, powered with a
12000Vac 60ma NST, with capacitance at resonance.


With silent lightning in my hands,
-The Electrophile-
Grayson Dietrich


>
>> -----Original Message-----
>> From: Tesla List [mailto:tesla-at-pupman-dot-com]
>> Sent: Saturday, April 17, 1999 11:20 PM
>> To: tesla-at-pupman-dot-com
>> Subject: Re: Scroungein' (fwd)
>>
>>
>> Original Poster: "christopher boden" <chrisboden-at-hotmail-dot-com>
>>
>> Due to constant design changes and new ideas....not to mention a
>> through flogging from Sam ;-) we are trying two seperate ideas.
>>
>> Project 1
>> Design Goal: To produce 5' discharge from a 120VAC <20Amp input.
>> Secondary size: 25" X 4"
>> Secondary winding: 26 AWG? (any ideas?)
>> Secondary form Schedule 40 PVC 4" pipe with glued on endcaps
>> Winding method: Lathe....BIG lathe.
>> Primary winding: 1/4" soft copper tubing
>> Primary form: Flat helix?
>> Primary size? Number of turns/spacing????? any ideas?
>> Caps: Where can we get some? What size do we need? How long will 
>they
>> last? We need rock-solid-reliability.
>> NST: 15KVAC -at- 30mA
>> Variac: ? what size do I need 20A?
>> Spark Gap:Static (no shrapnell) possibbly the Quick model
>> Torus: ?? biggest possible?
>> Anything else? What am I forgetting?
>>
>> Prodect 2
>> Coil Name: Thor
>> Secondary size: 12" X 5' twin secondaries
>> Secondary wire: 18AWG
>> Secondary Form: 2  1X5" Sonotubes 1/4" Cardboard tubes
>> Primary Wire: 3/8" Soft copper tubing
>> Primary Size: ?
>> Primary Form: Flat Helix
>> Power Supply: 20KVA Pole Pig (Supplier?)
>> Spark Gap: 4 Pole Async Rotary in a 1.5" Lexan Enclosure (ideas?)
>> Control Circuitry:?? Ideas?
>> Caps: Big... Ideas? Suppliers? MMC?
>>
>> Possible "Magnifier" setup insted of twin secondaries?
>>
>> Design Goal: Biggest possible discharge:
>>
>> Both coils will be housed in a dediated "High Voltage" room.
>> Room dimentions : 70' Long X 32' Wide X 23' High
>> Raised wooden floor (concrete floor 3' below for 26' ceiling height)
>> can be remooved if needed.
>> Brick walls 3-5' thick
>> Dual RF dedicated grounds to 10' Ground rods on 0AWG ACSR 
>conductors.
>> Concrete ceiling with 3' X 6" I-Beams every 3'
>>
>> Power supply (Mains): 480VAC -at- 500Amp 3Phase to 100 KVA Stepdown 
>(220)
>>
>> Control room will be next to the HV room with interlocks preventing
>> the doors to the HV room being opened while the mains to the TC are
>> energized.
>> Both coils will require a key to arm the system and a button to be
>> held to power the NST/pole pig.
>> Thor will require 2 Keys 6' apart to arm the system and a button to
>> arm the Pig.
>>
>> There may be a Faraday cage in the HV room for viewing, if this can
>> be done with ABSOLUTE safety to persons/ cameras inside...any ideas?
>>
>>
>>
>> Christopher A. Boden
>> The Geek Group
>> 344 Ionia SW
>> Grand Rapids MI
>> 49503
>> (616)-574-4065
>>
>> The Geek Shall Inherit the Earth!
>>
>>
>> _______________________________________________________________
>> Get Free Email and Do More On The Web. Visit http://www.msn-dot-com
>>
>

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