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LAN_403

Tesladownunder

Tue Feb 07 2006, 04:50PM

Registered Member #10 Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424

Idreamz Oct 2 2004

Here is the first coil I built. Constructed it around November 2003, with midifications and tweaks in August 2004. Here are the specifications as of now:

Power Supply: 6kV 30mA Neon Sign Transformer
Capacitor Bank: MMC, 12kV at 0.017625uF (17.6nF)
Primary: 8.5 Turns, 15degree inverse conical, tapped at turn 5
Secondary: 40mm dia PVC, 1100 turns 0.2mm wire, 4 coats polyurethane
Spark Gap: 3 Gaps, Copper pipe gap, ajustable with brass bolt, Quenched with a fan from a microwave oven.
Protection: Aluminium Safety gaps, EMI fiter.
Ground: 22mm x 1' Copper pipe, but as of now, i am connecting the bottom turn of the secondary to the first turn of the primary. Still works without a ground.
Max arc length as of now, 25cm with 180W input.

Below is a photo of the coil in a nice stand. (The photo is a bit outdated, and shows 2 toroids, but I found it to work better with 1, and the pri is now tapped at turn 5.)

I plan to do more work on improving it if i have the time.

For much more information including comprehensive construction details, visit

Tesladownunder

Tue Feb 07 2006, 04:52PM

Registered Member #10 Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424

EastVoltResearch Oct 3 2004

Here is my Dual 833A VTTC Coil (ala John Freau's design) outputting 28" arcs in this particular photo. Maximum arc length was almost 32".

Dual 833A Tubes
Using the Dan McCauley VTTC Stacatto Controller System
MOT Transformer

Dan's Dual 833A VTTC Design - Complete Details, Schematics, Photos, Description, Parts List

Dan's Custom VTTC Stacatto Controller - Complete Details, Schematics, Photos, Description

Tesladownunder

Tue Feb 07 2006, 04:55PM

Registered Member #10 Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424

EastVoltResearch Oct 3 2004

Attachment 3: Dan's VTTC Custom Stacatto Controller

Tesladownunder

Tue Feb 07 2006, 04:57PM

Registered Member #10 Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424

Tesladownunder Oct 3 2004

First light sparks here are from a hasty lash up. The primary is thin 19G wire taped onto a flattened cardboard box on a wooden pallet. The topload is a small toroid with a sphere, with a breakout point, sitting on top. The coupling was all wrong, the tuning very brief (11 turns) and everything was wet with dew. My ARSG gap was not optimised. The current draw was over 20 A, 250V (5KVA). Still the 5 foot sparks were gratifying and limited by the proximity to the basketball ring. Neither the Tesla coil or basketball ring were easily moved to get a peak spark length. The spherical electrode makes this look like a scaled down Electrum.
The former is made of 3 mm (0.12 inch) polypropylene sheet welded around end caps and one centre cap. This is light (weighs 9 Kg, 20 lbs) and the polypropylene is a suitable plastic in regard to dielectric losses. It measures 45 x 150 cm (18 by 59 inches).

Secondary coil 1100 turns of 0.9 mm(19 AWG 0.037 inch) wire on 45 x 137 cm (18 x 54 inches) elevated 15 cm (6 inches). This uses 11 kg (24 lbs) of C 220 (220 deg C) polyimide coated enameled wire.

If you look closely you can see Mars above the coil. Further details and progress on my site.

Peter

Tesladownunder

Sun Feb 12 2006, 01:15AM

Registered Member #10 Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424

Tesla coiler Oct 3 2004

Hi All!

This is my TESLA2Â° a simple and cheap ( but really powerful )
medium-sized standard spark gap coil

SPECS:

Primary: 11.5 turns of 10mm diameter, 20mm spaced copper tube
(20 meters) wound on four machined teflon supports.
Secondary: 1950 turns of 0.4mm magnet wire wound on 16x75cm PVC tube
Toroid: 12 cm tube, 69 cm overall diameter,roughly calculated than
fine adjusted for measured quarter wawe resonance.
Tank cap: 50nF-24kVdc MMC with 180 1uF-400Vdc MKP-HQ capacitors in
series-parallel. ( 60 pieces in series per string,
3 string in parallel )
Spark gap: 10 pieces (9 gaps) of 16x200mm copper tubes, spaced about
0.9mm, no fans required.
Power supply: only 7kV 100mA + variac
sparklengt: 1.2 meters streamers, 1.4meters sparks to grounded tip
note: designed for LTR static-gap operation at 50Hz power grid,
100Bps, see schematics for safety gaps and RFI filters

More pics available on

Enjoy!

Ciao!
Fabio.

Tesladownunder

Sun Feb 12 2006, 01:16AM

Registered Member #10 Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424

Teslacoiler Oct 3 2004

An old-style B/W artistic pic of me and my TESLA2Â° at Vimercate 2004 teslathon.
Remember, this is a MEDIUM SIZED coil!

Tesladownunder

Sun Feb 12 2006, 01:20AM

Registered Member #10 Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424

Colin Heath Oct 3 2004

hi all,
this is my drsstc.
specs half bridge of hgt1n40n60 igbts with 100nF tank cap. 6" secondary at 120KHz.
ouput length 26" maxed out.
cheers
colin

Tesladownunder

Sun Feb 12 2006, 01:27AM

Registered Member #10 Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424

Evolve000 Oct 3 2004

This is White Lightning, the Tesla coil my group and I contructed for our Senior Design Project at Louisiana Tech University. The vital stats on this coil are:
1 ) 13.35 nF tank capacitor.
2 ) 50 mH and 7.92 pF secondary coil.
3 ) Secondary form with 4.25â€ diameter, 20â€ height, and 1609 turns.
4 ) Top load: major diameter 15â€, minor diameter 4â€, and total capacitance of 16.648 pF.
5 ) Primary coil made of Â¼â€ copper tubing will have an inductance of 0.094 mH.
6 ) Resonant frequency of 140 kHz.
7 ) 15 kV 30 mA neon sign transformer as power supply (450 VA).
8 ) Maximum spark length of about 36 inches.

For more information, check out my website at

Tesladownunder

Sun Feb 12 2006, 01:46AM

Registered Member #10 Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424

Kalenedrael Oct 3 2004

My Tesla coil on my website, and a (old) spark image:

I also have a mini twin: (pic corrupted but avail here)

And a SSTC:

Tesladownunder

Sun Feb 12 2006, 01:47AM

Registered Member #10 Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424

EastVoltResearch Oct 4 2004

Dan's DRSSTC II System
26" x 6" Toroid
6.5" Secondary
0.11uF Primary Tank Capacitor
Maximum Arc Length (approx. 72")

Complete Details of this coil can be found here:

Here I am doing some final adjustments before a demonstration at the RATCB 2004 teslathon.

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