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LAN_403

Finn Hammer

Mon Jul 06 2009, 10:30AM

Registered Member #205 Joined: Sat Feb 18 2006, 11:59AM
Location: SkÃ¸rping, Denmark
Posts: 741

All,

So we finally had first light.
After a week end with many tasks, amongst the construction of a 3-phase voltage quadrupler, we set the rather hastily constructed primary coil up.

Firing up the coil, it became clear that it favours low break rates, and that tuning a big coil like this is not at all easy. Over current limit stayed at 2kA...
Starting out thinking weÂ´d break records, we soon realized that with 10 feet on the chart, we had better wrap the coil up and let the experience sink in....

We did a small video documentary.
Distance from breakout point to ladder is 3 meters, and to ground 3.10 meters

Cheers, Finn Hammer and Daniel Uhrenholt

Dalus

Mon Jul 06 2009, 07:38PM

Registered Member #639 Joined: Wed Apr 11 2007, 09:09PM
Location: The Netherlands, Herkenbosch
Posts: 512

Wow that has some Thump to it

From the looks of it your coil will surely to break some records. Guess it's time for you guys to clean it up and build it so it's ready for some more demos. That test must have been loud.

Can you give some more info, power usage bus voltage etc. Quite curious to see how your coil preforms compared to others.

I'd say it's safe to go a bit further current wise, 2kA should be quite safe for the CM600 IGBTs to handle. (short version we want more and bigger arcs

)

Bennem

Mon Jul 06 2009, 08:14PM

Registered Member #154 Joined: Sun Feb 12 2006, 04:28PM
Location: Westmidlands, UK
Posts: 260

.....'if you go down in the woods today your sure for a big surprise'.......lol

Wow Finn, thats quite some spark already!
well done mate!

Mel

Killa-X

Mon Jul 06 2009, 11:29PM

Registered Member #1643 Joined: Mon Aug 18 2008, 06:10PM
Location:
Posts: 1039

Dalus wrote ...

Wow that has some Thump to it

From the looks of it your coil will surely to break some records.

Yeah, I thought that and the fact that the Thumper is so compacted, that I was looking at his tesla coil thinking, "Wow, There's really not much to setup." Just connect the small thumper to the coil and off you go. Very compacted makes it look really clean and simple.

Nice job on the Thumper tesla though! Really looks nice

Coronafix

Tue Jul 07 2009, 02:00AM

Registered Member #160 Joined: Mon Feb 13 2006, 02:07AM
Location: Melbourne, Australia
Posts: 938

Nice work fellas!! The coupling looks quite loose on the coil, are you intending to tighten this up?
What is the estimated power limit to the engine? And how much were you driving into it in the vid?

Linas

Tue Jul 07 2009, 06:37PM

Registered Member #1143 Joined: Sun Nov 25 2007, 04:55PM
Location: Vilnius, Lithuania
Posts: 721

Finn Hammer wrote ...

This brings this cluttered look, Hats off to Linas for his clean looking bridge.

Your bridge have better looking, and performance. but hey, mine is working too

Finn Hammer

Tue Jul 07 2009, 07:25PM

Registered Member #205 Joined: Sat Feb 18 2006, 11:59AM
Location: SkÃ¸rping, Denmark
Posts: 741

Linas wrote ...

Finn Hammer wrote ...

This brings this cluttered look, Hats off to Linas for his clean looking bridge.

Your bridge have better looking, and performance. but hey, mine is working too

Linas,

I really was trying to flatter you with the clean look of your bridge. Like the nice snubber board tucked nicely away, not like my TVS'es and resistors.

Cheers, Finn Hammer

vasil

Tue Jul 07 2009, 08:23PM

Registered Member #229 Joined: Tue Feb 21 2006, 07:33PM
Location: Romania
Posts: 506

Good work, very nice results!
I followed your project with great interest, even I dont fully understand all the electronics implied though.
I guess that after more testing there will be "Thumper units" from the Finn' shop avalaible on market. They will run coils in a broad frequency range.

teravolt

Wed Jul 08 2009, 02:18AM

Registered Member #195 Joined: Fri Feb 17 2006, 08:27PM
Location: Berkeley, ca.
Posts: 1111

Finn how much power are you consuming out of the wall and what is your power source

Arcstarter

Wed Jul 08 2009, 03:37AM

Registered Member #1225 Joined: Sat Jan 12 2008, 01:24AM
Location: Beaumont, Texas, USA
Posts: 2253

Is a very impressive coil indeed! Wow, 3 meter sparks :D.

And are those little film caps on your hat? Either way, nice picture :D. It is somewhat smaller than i imagined. That is sure small for how big those sparks are! IGBT's sure are one of the world's little wonders, aren't they?

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