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Tesladownunder

Sun Feb 12 2006, 01:49AM

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

EastVoltResearch Oct 4 2004

Attachment 2 :

Spark photos of DRSSTC II.

Tesladownunder

Sun Feb 12 2006, 01:51AM

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

hilo90mhz Oct 5 2004

900W Tesla Coil

Secondary: 6" x 24" wound with 24guage
Primary: 18turn with 1/4" solid copper ground wire
Transformer: 15KV 60MA NST
Capacitor: .02uf 36KV MMC
Sparkgap: Vacuum quenched single gap
Toroid: 6" plastic ducting coverd with aluminum foil strips, 24" outside diameter

36" max spark length

Worked great until recently when my MMC rack fell apart and half the series string shorted..

Website with more info:

Tesladownunder

Sun Feb 12 2006, 01:54AM

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

hilo90mhz Oct 5 2004

SSTC-1
Old school SSTC built back when Alan Sharp and Richie Burnett were the main resources for info on SSTCs.

Secondary: 3" by 13" wound with 28awg
Primary: 16 turns 10awg stranded copper wire
Toroid: 2" by 7" made from vacuum cleaner tubing covered with alum foil
Mosfets: FDH44N50
Resonsant Freq = 333khz

8" sparks at 120v

Uses the standard tl494 driver circuit in open loop. Has a switch for full or half wave rectification, and will run off 120v or 240v

Website with more info:

Tesladownunder

Sun Feb 12 2006, 01:57AM

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

Tesladownunder Oct 5 2004

This is my best shot with 8 foot sparks. The spark is 3 times the length of the secondary winding it came from (96 vs 32 inches). I still have not seen a longer ratio clearly measurable from a photo. This photo won a (minor) prize in a competition and looks dramatic in high resolution.
Coil is 6 inches diam, cap is 90nF (MMC plus home rolled), supply is 4 MOT's and gap is an angle grinder ARSG running a very fast 1200 bps (9000rpm, 8 electrodes). Power is about 5kVA and cooling of the gap is with a leaf blower.
The sign on the gate says "Forget the dog, beware of the owner"

Lots more info on my site with several Tesla coils plus laser, railgun, high voltage, can crushing, magnetic levitation and electronic projects.

Peter
ps We need more beginners coils here. I've used all mine.

Tesladownunder

Sun Feb 12 2006, 02:01AM

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

Lucasmtong Oct 5 2004

Primary / Tank
7.5Kv 30mA NST
12.5nF MMC 8 .1uF 1500v in series with 10M bleed resistors on each cap
12 turn primary with 8AWG insulated wire (flat pancake)

Secondary

Diameter 10cm
Winding Height 42cm
Wire diameter .4mm
Turns aprox. 1050
1/4 wave res frequency 247Khz (with topload)

Topload
2 staked salad dishes + home make toiroid
Aprox. 47pF

Tesladownunder

Sun Feb 12 2006, 02:02AM

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

Lucasmtong Oct 15 2004

40cm Sparks
Point to Point Breakout

Tesladownunder

Sun Feb 12 2006, 02:04AM

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

Dave 47 Oct 29 2004

YeeHaa!!! My first coil!

9KV 30mA NST
15nF cap (10 x 0.15uF @ 2KV)
Spark gap = 4 gap RQ type with no forced air (yet)
Primary ~8.5 turns (tuned 15 turns wound)
Secondary = 4.38inches by 22.5inches 22AWG (800 turns)

Max arc length so far = 20inches
The picture is only about 12inches.

Tesladownunder

Sun Feb 12 2006, 02:06AM

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

DBH Oct 29 2004

Here's my mini SGTC.

Specs
Primary Input: NST - 3.6kV 30mA
Primary: 12 Turns of 8 gauge insulated wire, flat spiral.
Spark Gap: 2 copper 'T' connectors.
Secondary: 48mm diameter, wound with 0.2mm wire for 230mm. Polyurethane sealed.
Tank Cap: Six strings five 0.022uF 1500v polypropylene caps. Total rating: 0.0265uF 7500v
Safety Gap: 2 gaps and a grounded centre terminal. Brass construction.
Toroid: 220mm diameter stainless steel sphere.

Spark length with stainless steel toroid: 8 inches.

Tesladownunder

Sun Feb 12 2006, 02:46AM

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

Alexey Oct 31 2004

Furniture burner coil from Russia ^_^
I reanimated my first(and only) junk coil, which I've built in high school several years ago.
It's always targets my sofa instead of ground rod

Sparks up to 110cm (44 inch)

Specs:
Secondary: 9cm diameter, 1300 turns 0.33mm wire, winding length - 42cm. Polyurethane coated.
Toroid: 44 cm X 12cm diameter air duct --> 160kHz
Primary Input: 4 unshunted MOTs, big inductive ballast
Primary: 7 Turns, flat coil
Tank Cap: MMC = 0,1mk 24kVdc
Spark Gap: 200bps, async
ferrite core RF filter 0.08gn
no safety gaps

Tesladownunder

Sun Feb 12 2006, 06:43PM

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

Alexey Nov 01 2004

sparks are well-seen even with lights turned on

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