Bigcoil
Adam Munich, Tue Dec 29 2015, 06:08PMHi all,
Several years ago now I built a giant musical tesla coil, but never told any of y'all about it.
Figured it's worth sharing
- Bridge caps store 1.2kJ with 120mOhm ESR
- Tank is an MMC from the foil plate CDE caps everyone loves
- Coil diameter, 14 inch. Built on custom formed fiberglass tube.
- H bridge is 2x CM1400DU-24NF, with isolated 20A gate drivers. ~300ns rise time, beats the datasheet by a factor of 4
- Peak current limited to 1500A
- Bus voltage 350V or optionally 590V on 208V.
- Polyphonic midi control
It took about a month to built. Been going strong ever since, even surviving multiple rainstorms.
Re: Bigcoil
Signification, Tue Dec 29 2015, 06:33PM
Is that "popcorn"?
Signification, Tue Dec 29 2015, 06:33PM
Is that "popcorn"?
Re: Bigcoil
woodchuck, Tue Dec 29 2015, 08:00PM
I still have a 45 of the Hot Butter original.
Impressive coil! Impressive setting!
woodchuck, Tue Dec 29 2015, 08:00PM
I still have a 45 of the Hot Butter original.
Impressive coil! Impressive setting!
Re: Bigcoil
Adam Munich, Tue Dec 29 2015, 08:06PM
It is popcorn. makes a great show on the coil.
]popcorn.zip[/file]
Adam Munich, Tue Dec 29 2015, 08:06PM
It is popcorn. makes a great show on the coil.
]popcorn.zip[/file]
Re: Bigcoil
Signification, Tue Dec 29 2015, 08:45PM
@woodchuck:
That's it! The old 45 by "Hot Butter"
@Adam:
...ever considered "Flight of the Bumblebee?
GREAT COIL!
Build a twin and put on "Dueling Banjos"
We know the light can be modulated, but what about different colors per coil setup?
Signification, Tue Dec 29 2015, 08:45PM
@woodchuck:
That's it! The old 45 by "Hot Butter"
@Adam:
...ever considered "Flight of the Bumblebee?
GREAT COIL!
Build a twin and put on "Dueling Banjos"
We know the light can be modulated, but what about different colors per coil setup?
Re: Bigcoil
Sigurthr, Wed Dec 30 2015, 04:06AM
Very nice! I remember seeing a few build photos on facebook at the time you were working on it, it's great to finally see the final result.
Sigurthr, Wed Dec 30 2015, 04:06AM
Very nice! I remember seeing a few build photos on facebook at the time you were working on it, it's great to finally see the final result.
Re: Bigcoil
Mads Barnkob, Wed Dec 30 2015, 07:24PM
It is pretty clear that you are running without a single break out point, but do you have multiply small break out points or is it just the toroid having a real uneven surface?
Mads Barnkob, Wed Dec 30 2015, 07:24PM
It is pretty clear that you are running without a single break out point, but do you have multiply small break out points or is it just the toroid having a real uneven surface?
Re: Bigcoil
Justin, Sat Apr 09 2016, 02:29AM
Might be interesting to put different metal salts on the various breakout points.
Justin, Sat Apr 09 2016, 02:29AM
Might be interesting to put different metal salts on the various breakout points.
Re: Bigcoil
Art, Sat Apr 09 2016, 01:17PM
What’s happening when a spark lights the whole camera frame?
Happens 3 or 4 times.
Art, Sat Apr 09 2016, 01:17PM
What’s happening when a spark lights the whole camera frame?
Happens 3 or 4 times.
Re: Bigcoil
Justin, Sun Apr 10 2016, 07:46AM
Probably a ground strike.
Justin, Sun Apr 10 2016, 07:46AM
Art wrote ...
What’s happening when a spark lights the whole camera frame?
Happens 3 or 4 times.
What’s happening when a spark lights the whole camera frame?
Happens 3 or 4 times.
Probably a ground strike.
Re: Bigcoil
Kizmo, Sun Apr 10 2016, 09:30AM
Thats what happens with ground strikes when camera exposure is cranked up really high
Kizmo, Sun Apr 10 2016, 09:30AM
Thats what happens with ground strikes when camera exposure is cranked up really high
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