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LAN_403

Down with Umbrella

Sat May 16 2015, 02:02PM

Registered Member #54480 Joined: Sun Feb 15 2015, 01:02AM
Location: Kennebunk ME
Posts: 7

Hello fellow coilers, this is my first SGTC.
It is powered by two 15kV/30mA neon sign transformers wired in parallel.
The spark gap has 4 series tungsten electrodes quenched by a Dayton blower.
The secondary has 904 turns of 24awg magnet wire and resonates aprox. 220 kHz
MMC- 2 strings of 18 942c caps giving me .0175uf.
Top load is a 4 x 18 aluminum toroid from amazing1.com

The terry filter is somewhat unique. There were some erratic arcs underneath the PCB boards where the components were soldered, after much trial and error I built a form out of plexiglass and filled it with oil for the TF to sit in. Problem solved.
This coil was quite the project. It took roughly 4 months to build, that includes research and tinkering on and off. I recieved great help from Sigurthr and other forum members.
Next up is a SSTC.
Thanks all for looking!

(Not in photo: two plexiglass covers that cover the caps and the clamp on the lead for the primary tap point)

dillon

Sun May 17 2015, 04:23PM

Registered Member #54416 Joined: Wed Feb 04 2015, 01:30AM
Location:
Posts: 13

this is using just a basic zvs driver.but instead of a flyback, it is driving primary directly

Chris Maness

Tue Jul 28 2015, 02:50AM

Registered Member #55389 Joined: Mon Jul 06 2015, 12:38AM
Location: Grand Terrace, CA
Posts: 29

I have just recently built an OBIT SGTC. It is a beefy OBIT (240VA). I am currently getting 8-10" streamers from my toroid. Here is a video:

I am using 4 brown beer bottles for NaCl+H2O caps.

Here is a pic.

NNO2

Thu Aug 27 2015, 07:56AM

Registered Member #1648 Joined: Thu Aug 21 2008, 06:03AM
Location:
Posts: 5

DC Supply Voltage 27V
Resonance Frequency 1.1MHz
FET IRFP260 single
Class E Amplifire

Spider coil but has a two-dimensional spread ,
Since the volume is less it can be stored on a bookshelf .

Anaesthetix

Fri Sept 25 2015, 09:01PM

Registered Member #54926 Joined: Mon Apr 27 2015, 07:18PM
Location: Limburg, the Netherlands
Posts: 6

This is my second spark gap teslacoil, it was built in 2011/12.
Specs are:
HVsupply: 2 MOTs with secondary's in series + voltage doubler (which also serves as capacitive ballast)
Cap: home made rolled capacitor (3* ~75nF in series, measured 25.4nF)
Sparkgap: Asynchronous, operating around 400bps
Primary: 6mm copper tubing, 10 turns
Secondary: 12.5*67cm form, 0,53mm wire ~1200 turns
Toroid: 15*55cm + 8*35 aluminium duct (guessed, can't remember the exact dimensions)

Only have one older vid, tuning wasn't perfect and bad quality cam: https://www.youtube.com/watch?v=BybMIGIzTbo
Imgur album: http://imgur.com/a/RBUgk
OmRJLH8

Justin

Fri Nov 20 2015, 08:56AM

Registered Member #46164 Joined: Wed May 07 2014, 08:16AM
Location: California, USA
Posts: 89

16" arcs to the wooden shelf
3.5x8.5" Secondary Coil
3"x12" Aluminum Toroid
4 Turn Primary Coil, 12AWG
f0 of around 300KHz

meawoppl

Tue Dec 29 2015, 01:33AM

Registered Member #57545 Joined: Wed Oct 21 2015, 01:28AM
Location:
Posts: 8

This is a coil made by the group "Coup De Foudre" titled Orage. Its a wicked beast.
1451352753 57545 FT14 Tesla

16x96 inch secondary.
Full bridge CM600.
f_0 ~31.8kHz

Verschrottix

Mon Apr 18 2016, 06:39PM

Registered Member #58519 Joined: Sun Mar 13 2016, 11:58AM
Location:
Posts: 2

Here's my ARSGTC powered by 4MOTs.
This one is my latest coil.
Currently i'm working on a DRSSTC a bit bigger than the AR'

Down with Umbrella

Sat Oct 15 2016, 02:18PM

Registered Member #54480 Joined: Sun Feb 15 2015, 01:02AM
Location: Kennebunk ME
Posts: 7

Hello folks, after successfully completing my SGTC I decided move onto solid state components.
First up is a half bridge with a voltage doubler for approximately 340VDC.
Primarily I used designs provided by Sigurthr, a member here who has faithfully helped me through designing and troubleshooting. His USSTC driver has worked phenomenal as well.
This coil has an output power of well over 1.4kW in CW mode and resonates with the top load capacitor at 222kHz.
MOSFETS: 2x- FDL100N50F mount on 6x6" finned AL hs.
Driver interrupted.

Full power & 25% power with xenon gas bulb.

The quest for a stand alone robust doubler circuit.

Thanks for looking guys!

SpaceWyzard

Wed May 24 2017, 10:34AM

Registered Member #2318 Joined: Fri Aug 28 2009, 01:22AM
Location:
Posts: 33

Dual 572b VTTC

My first coil!

Secondary:
2 inch diameter
10 inch height
685 turns off 28awg

Primary:
13 turns of 14awg
C=0.001uF

Grid:
12 turns of 28awg
C=0.0025uF
R=1kohm

Power:
1000w MOT
voltage doubler installed but not engaged in the video (uses knife switch)

Youtube Video

9Y7zo2D

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