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EvanLAB

Mon May 05 2008, 06:00AM

Registered Member #1452 Joined: Thu Apr 24 2008, 09:24AM
Location: Yekaterinburg
Posts: 5

Hello all! This is my first post on this beautiful forum! I live in central part of siberia and go in for TC building. Let introduce one of my first humble mini SGTC. It was made in last summer.

Technical data:

Prim.coil: 2,5 turn of copper pipe (D=6mm) on framework of 220mm diameter.
Sec.coil: 1944 turn (wire d=0,18mm) on plastic pipe of 50mm diameter.
Toroid: sphere of 53mm diameter.
Frequency: LC-resonance (of sec.coil) is 380,34kHz.
MMC: 18800pF/ 12kV of ceramics capacitors.
Spark gap: static
HV transformer: an old russian NST without magnetic shunts. 220V/ 10kV, 100mA (on short circuit).

dingo27

Mon May 05 2008, 07:15AM

Registered Member #890 Joined: Tue Jul 10 2007, 10:06PM
Location: Slovakia
Posts: 180

mini SGTC, running from 12V with flyback circuit (2n3055) and HV transformer from CRT,
resonance is somewhere between 1-2MHz
resonant capacitors are 3,13nF (i think) at 6kV
sparks are 1.5 cm long, but need a little bit of tweaking spark gap,
sparks are not getting to air by themselfs, but perfecly fly to human objeck (like me :), and beautiful corona is around toroid (but i am not able to capture it because of my photocamera)

01ok

EvanLAB

Thu May 22 2008, 09:10AM

Registered Member #1452 Joined: Thu Apr 24 2008, 09:24AM
Location: Yekaterinburg
Posts: 5

Hello all! Fortunately, the building of my touring SGTC is coming to the end, and now I can show some pictures.

Technical data:

Prim.coil: 8 turn of copper pipe (D=16mm) 670 mm external diameter.
Sec.coil: 2000 turn (wire d=0,4mm) on carton pipe of 130mm diameter.(height 900mm)
Toroid: 380mm external diameter of vent duct 150Ð¼Ð¼ diameter.
Frequency: LC resonance (of sec.coil) is 108,76kHz.
MMC: ceramics capacitors stack 117,5nF/ 12kV.
Spark gap: custom construction RSG. BPS(max.)=1466 Hz.
HV power supply: double-MOT stack.
Streamers length: approximately (average) 1,2â€¦1,3m/ (max.) 1,5â€¦1,8m.

]shorty.mpg[/file]

TeslaCommander

Thu May 29 2008, 10:54AM

Registered Member #1510 Joined: Thu May 29 2008, 09:04AM
Location: Zevenhuizen
Posts: 1

Hey guys, im new here and wanted to show my first sstc here, and see what u guys think of it.

specs:

------------------------------------- ---------------
Type TC:

Audio Modulated Solid State TeslaCoil (AMSSTC)

---------------------------------------- ------------
Supply:

Current = varabel tot 2A
Voltage = 0-270VAC
Vermogen = max 500 W

---------------------------------------------- ------
Primair:

Helinx

Diameter = 110 mm
Height = 21 mm
windings = 7.0
Wire = 3.0 mm coated coilwire
Total length = 242 cm
Resistance = 0.019 Ohm
Inductivity = 8.7uH

------------------------------------------- ---------
Secundaire:

Diameter = 80 mm
height = 179 mm
Turns = 745
wire = 0.24 mm
Total length = 190 m
Resistance = 101.19 Ohm
Inductivity = 15.5mH
Resonance frequentie ( 1/4 Labda ) = 400 KHz

-------------------------------------------- --------
Topload:

Aluminum toroid 100 x 30mm

Spike 27mm high 18 mm wide

-------------------------------------------- --------
Capacitor:

polypropyleen film capacitor 0.68uF 400V

-------------------------------------------- --------
Streamers:

to ground = 15 cm

output voltage = max 130.000V

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

IMG 6733s

and a youtube link to one of the first audiotests: http://www.youtube.com/watch?v=UgoatBLl8z8&eurl=http://www.megavolts.nl/teslacoil/tesla_4/index.html

and a few other TC's of me in the order i made them:

20small

omegalabs

Thu Jun 05 2008, 11:24AM

Registered Member #1521 Joined: Thu Jun 05 2008, 10:46AM
Location: Hungary
Posts: 128

4 MOT Tesla Coil. Details:
AC Tesla Coil desing
rotary spark gap @ 400bps ~ max bps 1333 (asynchron)
homemade rolled poliethylene capacitor 56nF @ 20kV
secondary diameter: 7.8'' (200mm)
secondary turns 800
power supply: 4 mots in series 8,4kVAC
Frequency about 100kHz
Spark lenght 60'' = 1,50m (the prior version)
Video:

Spark picture :

Faraday cage picture :

Building the new version:
Mounting :

The 'variac box' (contains 1kVA and 6kVA variac):

The spark gap with 4mm diameter tungsten electrodes:

Some picture out of the Faraday cage:

A youtube video:

The output voltage is about 411kV (spark lenght 180cm, 70'')

My VTTC with GU-81M:

CW operation:

Video 1 :

Video 2 :

Avenger

Wed Jun 18 2008, 05:50AM

Registered Member #1275 Joined: Wed Jan 30 2008, 09:33AM
Location: Russia, Kazan
Posts: 17

My small VTTC, constructed one year ago. It is small, but gives 22-23 cm of a spark. Tube GK-71 (125w on the plate)
Secondary coil: 900 turn (wire 0,224mm) on PVC of 50mm diameter (height 220mm).
Primary is 22 turns of 0.7Ð¼Ð¼ wire, feedback 20 turns.
MMC = 330 pf of ceramic caps
One MOT without voltage doubler

Skywarrior

Wed Jun 18 2008, 07:09PM

Registered Member #925 Joined: Wed Jul 25 2007, 06:18PM
Location: Russia, Volgograd
Posts: 1

Hi all!
My first coil is half-bridge (FDH44N50) SSTC with interrupter.

Primary winding size (D x h): 12cm x 7cm
Primary wire diameter is 2.7mm, 7 turns
Secondary winding size: 11cm x 40cm
Secondary wire diameter is 0.233mm (0.27mm in enamel), 1420 turns
Toroid: 6cm Ñ… 20 cm

Frequency: ~ 210 kHz
Streamer length ~30cm.

Kristian

Mon Jun 23 2008, 12:29AM

Registered Member #611 Joined: Wed Mar 28 2007, 11:40PM
Location: Hudsonville, Michigan
Posts: 79

I think I posted this in another thread but I though I would put it here also. This is my twin bipolar coil. I don't have a still camera at the moment so I'm posting a video. Specs are listed in the video details.

Fraggle

Wed Jul 09 2008, 07:01PM

Registered Member #1526 Joined: Mon Jun 09 2008, 12:56AM
Location: UK
Posts: 216

This is my first Tesla coil and I`m improving as I go.

2 MOTs in series for ~4200V.
1 MOT with the secondary shorted for ballast.
Single static gap quenched by a powerful blower.
16nF MMC.
~1000 turns on the secondary, I forget the gauge but about 4 turns/mm.
Aluminium duct toroid on top of two Balti dishes covered with foil.

I made the mistake of winding a widely spaced spiral for the top 10cm or so and had to resort to covering it with foil to cure persistent problems with break-out (which worked very well).

Next up; more capacitors and voltage doubler.

Mads Barnkob

Thu Jul 10 2008, 08:25AM

Registered Member #1403 Joined: Tue Mar 18 2008, 06:05PM
Location: Denmark, Odense C
Posts: 1968

Kaizer SGTC I

My first Tesla coil is a flyback driven SGTC able of delivering 105mm(4") sparks to grounded wire.

PSU: 20kV single transistor flyback driver at 12-17Vdc
Secondary: 800T 0.127mm(AWG36) on a 50mm(2") diameter form, 110mm(4,33") tall
Primary: 6.6T 1.75mm(AWG13-14) flat coil, inner diameter 90mm(3,5"), outer diameter 180mm(7")
Capacitor: a single 8nF 20kV doorknob, an old Fribourg Condensateurs from 1961
Topload: 60mm(2,36") diameter tennis ball wrapped in aluminum foil
Spark gap: static with tungsten rods
Resonant frequency: 655kHz

Construction details and further pictures at:

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