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TinselKoil 21: Double-Dome Chrome SSTC

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Uploaded by on Sep 17, 2009

I took off the gnarly duct toroid and installed a top capacity that I had lying around from the Van De Graaff project days. I don't know why it didn't occur to me before.
It lowered the frequency to a bit under 800 kHz, which is good, because I listen to Coast-to-Coast with George Noory on 820 kHz late at night, and the SSTC was jamming his signal before.
Also I get a bit higher voltage in the staccato or disruptive discharge mode, since the capacity is larger and much smoother.
Running IRFP252 mosfets in this vid.
I just built another x-bridge section and tested it with IRFP250 mosfets. Some very nice bangs! I can't even find all the pieces. But at least the landlord didn't call the cops.

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Uploader Comments (TinselKoala)

  • the ducting tops always remind me of the robot from the tv series lost in space.

    question: are the two hub caps electricly seperate? or do they touch? i presume the latter, its just that everyone calls them capacitors..

    thanks, another fab flame !!

  • Yes, they are touching. And yes, it is a capacitor. The hubcaps or toroid or sphere function as a large smooth surface for charge to accumulate. The other plate of the capacitor may be considered to be the Earth. The hubcaps here have a capacitance of a few tens of picoFarads, which may not sound like much, but at a few hundred kilovolts it represents a lot of energy storage. Combined with the low inductance of the air-core resonator, it makes a significant difference in the resonant frequency.

  • Man you sure know how to play...LOL...

    Brilliant display.

  • Thanks! Since yesterday I've blown another 4 IRFP250 mosfets, and 8 1n4744 Zeners, and a 2n7000 minimosfet. It's only about 18 dollars worth of parts; I probably could have consumed that much in beers and pizza, watching hockey on TV.

  • so this is like A.A.

    ;)

  • Sort of. Except in these rooms, I'm all by myself, which is how I like it.

    (Oh, and the coffee's a lot better.)

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  • good thing your not jamming Coast to Coast anymore LMAO.

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