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Small Tesla Coil using disposable camera transformers

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Michalis.Biochem

Wed Oct 20 2010, 07:44PM

Registered Member #3340 Joined: Wed Oct 20 2010, 07:28PM
Location:
Posts: 69

Hello, i just became a member of this forum.
Is the schematic of the tesla coil depicted first on this thread available?
If so, i would like to take a look because i couldn't make a whole circuit schematic from the attached pdf.
Thank you very much!

P.S any tips/advices are welcome because i am new in the field of electronics : )

Zack

Mon Jan 31 2011, 09:52PM

Registered Member #3624 Joined: Mon Jan 17 2011, 01:08AM
Location:
Posts: 25

That's so cool! I downloaded the pdf for flash camera spark gap tesla coil and I tried building it. It only gave me a 2mm discharge, but I ran it on a single AA battery. It seems like all the HV people I see on the internet are on this forum.

Michalis.Biochem

Sat Feb 26 2011, 06:03AM

Registered Member #3340 Joined: Wed Oct 20 2010, 07:28PM
Location:
Posts: 69

Zack wrote ...

That's so cool! I downloaded the pdf for flash camera spark gap tesla coil and I tried building it. It only gave me a 2mm discharge, but I ran it on a single AA battery. It seems like all the HV people I see on the internet are on this forum.

Try running it from 2 batteries. Also add more turns, like 6 for primary(3cm radius) and 600 for secondary(2cm radius). Mine puts out about 3cm arcs and can dimmly light a cfl.

MasterSoro

Tue May 17 2011, 03:27PM

Registered Member #3898 Joined: Tue May 17 2011, 02:59PM
Location:
Posts: 1

i built the cockroft walton multiplier the way you said. i think i am getting 300V AC out of my flash board like you said. when i connect it to the CW and i mesure between out put and ground with one stage i get 600V pulsating DC which is what i expected. then i and a second stage and mesure between output and ground i still get 600V. and the same with 3 stages. iv tried with 6000V 470 pf(

products_id=1620692), 3000V 330pf(

products_id=1619903) 2000V 470 pf(

products_id=1619883) and 500V caps. with 1000V diode.

Please help me

H8erade

Wed Jun 29 2011, 10:19PM

Registered Member #3451 Joined: Sun Nov 28 2010, 11:13PM
Location: United States
Posts: 100

I was looking through this thread and I saw mentions of a .pdf tutorial... but I can't find any link. Am I missing something?

Edit:
Never mind. I found it with a quick Google search.

teslaozone

Fri Aug 05 2011, 09:43PM

Registered Member #4047 Joined: Fri Aug 05 2011, 06:39PM
Location:
Posts: 6

Hello, does anyone know if you can just use a simple wall adaptor instead of batteries so it can run as long as you want without having to replace the batteries every few minutes?

Arcstarter

Fri Aug 05 2011, 10:21PM

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

teslaozone wrote ...

Hello, does anyone know if you can just use a simple wall adaptor instead of batteries so it can run as long as you want without having to replace the batteries every few minutes?

Yes that would work fine.

flannelhead

Sat Aug 06 2011, 01:02PM

Registered Member #952 Joined: Mon Aug 13 2007, 11:07AM
Location: Finland
Posts: 388

Yep, I suppose it'll work fine. Don't go much above 3V to avoid breaking the tiny transformer or the drive circuit.

I haven't been even lurking around here for about a year or so. :o

teslaozone

Sat Aug 06 2011, 08:18PM

Registered Member #4047 Joined: Fri Aug 05 2011, 06:39PM
Location:
Posts: 6

what is the max amps i should have in a wall adaptor?
I tried a 5v 2a adaptor. And, i got a nice little explosion...

Also, i tried running a 9 volt battery on only one flash board and i got about 1" arc, although the transistor on the flashboard quickly over heated and died. Is there any way of over running this circuit but heat sinking the transistor? It seemed to be the only problem when running with a 9volt/
thanks alot for this cool project. Im building it for my girlfriend... am i cool or what :P

flannelhead

Sat Aug 06 2011, 08:31PM

Registered Member #952 Joined: Mon Aug 13 2007, 11:07AM
Location: Finland
Posts: 388

teslaozone wrote ...

what is the max amps i should have in a wall adaptor?
I tried a 5v 2a adaptor. And, i got a nice little explosion...

Also, i tried running a 9 volt battery on only one flash board and i got about 1" arc, although the transistor on the flashboard quickly over heated and died. Is there any way of over running this circuit but heat sinking the transistor? It seemed to be the only problem when running with a 9volt/

Actually I think input voltage is the most important limiting factor. Once I tried running a flash board transformer at 9v. The transistor died, but an eyeblink before there were sparks in the transformer. I don't believe the transformer would work at more than ~3V primary voltage, because otherwise the secondary voltage will be too high and insulation will fail.

teslaozone wrote ...

thanks alot for this cool project. Im building it for my girlfriend... am i cool or what :P

Sounds good! Good luck with the project.

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