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Overunity Machines Forum



Tesla coil Build comparison. (Proof of ability)

Started by Farmhand, October 25, 2013, 10:02:48 PM

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0 Members and 2 Guests are viewing this topic.

TinselKoala

@Farmhand:
My "grownup" Tesla coils, all different, all showing different principles:
#0: A 2 kW-class monster with rotary spark gap, big NST primary supply, safety gap, chokes, an Amplifying Transmitter (second secondary) coil, the whole nine yards. Haven't run it in years.
#1: A SolidState coil using TL494, a current driver, trifilar phase transformers, mosfet H-bridge.
#2: Major improved version of above with low-aspect-ratio resonator and double chromedome top capacity.
#3: SassyClassE SSTC: a low-aspect-ratio Class E single-mosfet DC-input SSTC, a real field-pusher.
#4: TKSlayer, my version of the Slayer Exciter simple low-voltage SSTC using NPN power transistor.
#5: MOT-DC Blown Gap SGTC, a unique single-MOT, HV FWB-rectified, compressed-air-quenched spark gap coil, 1 kW class, running at about 1.5 MV, actually.
#6: TKMiniSlayer, a bottom-loaded, tunable miniature version of the Slayer SSTC, using NPN power transistor, a field pusher.
#7: TinselKoil VII, the present design, a 'design proof-of-principle' built according to calculated parameters to see if they really worked, a hybrid SS-SG coil. DC input of 24 volts, ZVS dualing mosfet flyback driver at 30 kHz, flyback feeding traditional SGTC design with 4 nF SrTiO tank caps and 8-9 uH primary, ringing a loosely coupled secondary of 975 turns of #27 at somewhere between 600 and 800 kHz. The calculator used to design the coil says it should reach 1.15 MV at the top of the resonator (when fully tuned of course!)

8)

ETA: Can you believe it? I forgot one, about #0.5, the portable transmitting plant that I use for a logo sometimes. It's in a crate on a high shelf.

Off to the bathroom to do some more runs... Coil runs I mean, silly!

How's THIS for "Overunity in VARs".....  ;)     The calculated theoretical VI profile of the 24-volt input TinselKoil VII:


TinselKoala

Making progress... this is just a test of the GIF animator... if it doesn't run inline please download and watch...

Not bad for 24 volts input, there are some streamers over 12 inches in there.

ETA: OK that didn't work, so here are some stills.

TinselKoala

Erratum: At about 2:05 I say "drains" when it should be "sources" that the negative rail is connected to.
http://www.youtube.com/watch?v=d_VtbfhyvUU

8)

Farmhand

Nice, it has those smooth silky discharges like flames. I like it.

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