If you touch the sparks, it'll be mighty thor.
Powered by microwave oven guts
Does my coil look big in this?
For archive and reference purposes only!
I played a part in developing the new high-power pulsed solid-state coils driven by IGBTs. Most of my work was on Terry Fritz's OLTC concept. As an experiment I built a humongous OLTC that ended up being the third biggest solid-state coil in the world ever. But I gave up on it when I realised that Jimmy Hynes' DRSSTC was fundamentally better, and started doing DRSSTCs instead.
Along the way, I developed a bunch of new circuits, some of which caught on with other coilers. Probably the most popular ones were the PLL driver and thyristor controlled rectifier for SSTCs, and the voltage quadrupler power supply for spark-gap coils.
The high point of my coiling career was probably the hextuple MIDI controlled DRSSTC Organ that I developed with Finn Hammer, and can't tell you about because it's confidential. And very silly ;-)
I don't have so much time for coiling lately, since I got a day job, a house to look after, and my musical alter ego started getting more gigs. In particular, I had to quit going to the English teslathons and mothball my giant DRSSTC project. Although if someone else could help me out with finding a venue, a large 3 phase feed, and transport, I'd consider reviving it.
(Footnote in 2017: None of the 3 bands I was in ever came to anything. A somewhat scaled-down Odin was completed in 2014 and produced a 9 foot arc.)
This site documents most of the work I've done and shows pictures, sound clips, and movies of my Tesla coils in action, plus a lot of technical information on how they were built. There are also a few other related power electronic things such as flyback drivers, induction heaters and a plasma globe powered by a Class-C tube oscillator.
However, it's all more Colorado Springs Notes than Information Unlimited. If you're looking for step-by-step "Planz" for anything, you might be disappointed. But if you love messing around with electronics and technology like I do, I hope you'll find something here that interests you and maybe even inspires a project of your own. I've also contributed a lot of material to the forums at 4hv.org over the years, so if you're looking for something and can't find it here, try over there.
Tesla One (R.I.P.)My very first coil
Went to a fiery grave
Tesla-2DC resonant charging
made in 2003.
Mini OLTCOne of the first OLTCs,
made in 2003.
|Transformer burnt out- party's over!||First light spark photos||The concept|
|Outdoor test||Tech spec||Schematics|
|More pictures of stuff getting zapped||Closeup pics||Building the secondary|
|Tech spec||How it works/schematics||Tests produce 1.5" spark (wow)|
|More tech info with closeup pics||The hi-speed rotary gap||New IGBTs give 5" (pics and traces)|
|Spark photos||MP3 sound clip (600K) Right click to save||New circuit for first notch quenching|
|The Tesla Diaries||Second light-biggest sparks yet||Tech spec of the finished coil|
|More spark pics including a 30" strike||Pics of the finished build|
|QuickTime movie of 30" arcs (1.4MB)||First light photos. It does 9"|
|Souped up Tesla-2 produces 40" sparks||Bulb lighting experiments|
The Turbo Triodal Tesla-2
(joint venture with Alan Sharp)
|Personal best 11.2"|
|Anyone for plasma?|
Where we're going,
we don't need pigs.
Tesla FiveThe Dirty Weekend SSTC-
Powered by four IRFP460s
and a whole lot of luck
Tesla SixThe Dirty DRSSTC.
A lean, mean, IGBT blowing machine
|A Modest Proposal||The First Weekend||Constructing the H-bridge|
|Gate driver circuit for IGBT bricks||A PLL driver circuit||
Low power tests and
|Testing the brick||Movies of sparks+audio mod|
|Sparks from a brick!!!||More bigger arcs||36" arc and B A N G|
|Streamers too!||DW at Derby Teslathon||
DRSSTC work gets
a whole new page!
|Building the primary circuit|
|Testing the primary circuit|
|Revised driver circuit|
|3.5kW power supply with thyristors|
|Trigger pulse generator|
|Testing the primary circuit|
|Building the resonator|
|Assembly and some little sparks|
|Short circuit protection|
|System diagram (includes all schematics)|
|Power supply casing- end in sight|
|Arcs up to 5ft. Movies|
|6 foot arc|
|Visit to Strathclyde Uni.|
|Mega power at Derby '05|
|OLTC II Spec|
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