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Forums
4hv.org :: Forums :: Tesla Coils
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spark augmenter?

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Crunchy Frog
Thu Nov 26 2009, 07:53PM Print
Crunchy Frog Registered Member #2422 Joined: Tue Oct 06 2009, 02:41AM
Location:
Posts: 85
 		Would this thing actually work? Has anyone tried it?
6401
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plazmatron
Thu Nov 26 2009, 08:00PM
plazmatron Registered Member #1134 Joined: Tue Nov 20 2007, 04:39PM
Location: Bonnie Scotland
Posts: 351
 		That looks familiar. I think I saw something like that in Tesla's original notes.

What site did it some from? Are there experimental results?

Les
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vasil
Thu Nov 26 2009, 08:53PM
vasil Registered Member #229 Joined: Tue Feb 21 2006, 07:33PM
Location: Romania
Posts: 506
 		Something similar here:

http://www.tesla-coil.com/ConcentricSpheres.htm
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doctor electrons
Thu Nov 26 2009, 10:30PM
doctor electrons Registered Member #2390 Joined: Sat Sept 26 2009, 02:04PM
Location: Milwaukee Wisconsin
Posts: 381
 		Very interesting! Do you have a link with more info on that setup?
I would be up for trying to make one!
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Crunchy Frog
Fri Nov 27 2009, 03:54AM
Crunchy Frog Registered Member #2422 Joined: Tue Oct 06 2009, 02:41AM
Location:
Posts: 85
 		It was on pupman.com with a bunch of unrelated stuff. No info on if it's been tried or not.
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Dr. Slack
Fri Nov 27 2009, 08:51AM
Dr. Slack Registered Member #72 Joined: Thu Feb 09 2006, 08:29AM
Location: UK St. Albans
Posts: 1659
 		As I understand it, the difference between what's shown, and simply a large topload with a wire between the two sections, is the variable conduction available between the two halves.

It asserts correctly that a spark between the two would happen much more quickly than streamer formation from the toroid. However, for this to be useful, it means the spark has to jump at the right time, after the streamer has hit a ground.

It seems that the choice of the resistor between the two halves could be critical. The value has to be low enough to charge the sphere with each half cycle of TC operation, so at 100s of kHz. However, it's got to be big enough to inhibit transfer of charge while streamer formation is taking place.

With DC high voltage terminal, say from a VDG or CW multiplier, there would be no difficult time constant problem. I don't see how it works with a TC, unless I have analysed it wrongly.
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Mates
Fri Nov 27 2009, 10:54AM
Mates Registered Member #1025 Joined: Sun Sept 23 2007, 07:53PM
Location: Czech Rep.
Posts: 566
Dr. Slack wrote ...


It seems that the choice of the resistor between the two halves could be critical.


I see it the same way.

Do you have any guess for resitor value for a 160Khz coil (Mohms or Kohms) ? I can easily try this koncept ...
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Herr Zapp
Fri Nov 27 2009, 07:29PM
Herr Zapp Registered Member #480 Joined: Thu Jul 06 2006, 07:08PM
Location: North America
Posts: 644
 		Crunchy -

That's Ken Herrick's concept, which was discussed on the Tesla Coil mailing List some time ago. Ken's original schematic can be seen at:
Link2

Quickly reviewing the TCML archives, it sounds like Ken did build and test this concept, with positive results, and posted a photo on the old Hot-Streamer.com site.

However, I could not find the file in question (Link2 on the classictesla.com
"mirror" of the hot-streamer site; does anyone have a copy of this photo archived anywhere?

Regards,
Herr Zapp
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plazmatron
Fri Nov 27 2009, 07:46PM
plazmatron Registered Member #1134 Joined: Tue Nov 20 2007, 04:39PM
Location: Bonnie Scotland
Posts: 351
Herr Zapp wrote ...


However, I could not find the file in question (Link2 on the classictesla.com
"mirror" of the hot-streamer site; does anyone have a copy of this photo archived anywhere?

Regards,
Herr Zapp

From archive.org smile


1259351103 1134 FT80235 Kch Tcg1



Les
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Proud Mary
Fri Nov 27 2009, 10:08PM
Proud Mary Registered Member #543 Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
 		Aren't these extra spheres just various forms of lumped-constant L & C tuned circuit?
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