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Post Your Cool Pic Here!

Move Thread LAN_403
Experimentonomen
Sun Mar 16 2008, 10:45PM
Experimentonomen Registered Member #941 Joined: Sun Aug 05 2007, 10:09AM
Location: in a swedish junk pile
Posts: 497
I want to see schematic.
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Dr. Dark Current
Mon Mar 17 2008, 06:40AM
Dr. Dark Current Registered Member #152 Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
Ok i drew a quick schematic
phasing of primary is important
core must have ~0.5-1mm air gap

i dont have time now so ill answer any questions later

1205736035 152 FT6000 Sg3525


EDIT
Some more things:
set frequency to ~20-21kHz
duty cycle adjusts output power



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Mates
Mon Mar 17 2008, 11:12PM
Mates Registered Member #1025 Joined: Sun Sept 23 2007, 07:53PM
Location: Czech Rep.
Posts: 566
Plasmaddict wrote ...

130KV from single flyback
(assuming 1KV/mm air dielectric strength) smile

Hey Jan, 15cm = 102KV ! (using 1,27cm square rods). You have barely 90KV (I would say below 80KV according the sharp endings of your electrodes)... But it's nice.
Once I had a fly-back form a TV which could make also like 13cm sparks but this one was exceptional and it died after a while anyway. I think you are at the very edge and most likely you destroy it...
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CT2
Tue Mar 18 2008, 05:05AM
CT2 Registered Member #180 Joined: Thu Feb 16 2006, 02:12AM
Location: Ontario, Canada
Posts: 187
The other night I was kind of bored and was playing around in photoshop with one of my tesla coil pictures. After a little bit I managed to get this cool effect on all the sparks showering off the topload, to get the full effect and detail you have to full screen it. This is the original beside the photoshopped copy:

1200251661 180 FT37370 Dsc 0125 Th

(for some reason I can't upload pictures right now? so I have to link it)
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Nik
Tue Mar 18 2008, 06:08AM
Nik Registered Member #53 Joined: Thu Feb 09 2006, 04:31AM
Location: Ontario, Canada
Posts: 638
My poor-man's flash trigger. I extended the leads on the reed switch and made a pressure sensitive switch under the container of water.


1205820865 53 FT1630 Splash
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Dr. Dark Current
Tue Mar 18 2008, 03:16PM
Dr. Dark Current Registered Member #152 Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
Mates wrote ...


Hey Jan, 15cm = 102KV ! (using 1,27cm square rods). You have barely 90KV (I would say below 80KV according the sharp endings of your electrodes)... But it's nice.

hey, do you have any spark size vs. voltage graph, for different electrode shapes? I was searching for one for quite some time.



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Experimentonomen
Tue Mar 18 2008, 04:18PM
Experimentonomen Registered Member #941 Joined: Sun Aug 05 2007, 10:09AM
Location: in a swedish junk pile
Posts: 497
Sheesh CT2 that right pic look creepy.
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Mates
Tue Mar 18 2008, 07:23PM
Mates Registered Member #1025 Joined: Sun Sept 23 2007, 07:53PM
Location: Czech Rep.
Posts: 566
Plasmaddict wrote ...

hey, do you have any spark size vs. voltage graph, for different electrode shapes? I was searching for one for quite some time.

for rod electrodes
Link2

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Nik
Wed Mar 19 2008, 06:28AM
Nik Registered Member #53 Joined: Thu Feb 09 2006, 04:31AM
Location: Ontario, Canada
Posts: 638
Same idea as before but I set up a more sensitive trigger for the flash (still pressure sensitive).
1205908078 53 FT6000 Splash2

1205908078 53 FT6000 Splash3

1205908078 53 FT6000 Splash4
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Dr. Dark Current
Wed Mar 19 2008, 08:07PM
Dr. Dark Current Registered Member #152 Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
That looks quite cool Nik.
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