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4hv.org :: Forums :: High Voltage
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What can I do with a million flash boards?

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Tetris
Thu Dec 29 2011, 11:08PM Print
Tetris Registered Member #4016 Joined: Thu Jul 21 2011, 01:52AM
Location: Gainesville, FL
Posts: 660
I keep collecting them and breaking them, and there are tens of them lying around my room. What can I do with them? I've made a simple taser with one *and lost it somewhere* already, but is there anything I can do with the rest of the circuit or the caps? Can I make a coilgun with the caps and if so, what else do I need? I have very limited supplies and there isn't much else I can do with as far as HV goes because of the difficulty of getting parts through parents (Dad doesn't want me to get a job). So is there anything I can do with them? I go to CVS at least once a week or so, and I get 6-8 boards in each trip I am there, so if I need more boards, I can get them, but I want to do something with all of them. I have about 40 more locked away in the attic but I probably won't touch those for years because its in my "Decade Box" which I vowed not to open for 10 years and it contains the rest of my junk. Anyways, anyone have an idea? I want to post SOMETHING in the projects section... I'm not a HV experimentor until I make something that actually works the way it should...


EDIT: As I was changing my clothes, I swiped my towel off of my bed, knocking over a flash board (fully charged) onto my wet foot. Ow.
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Platinum
Thu Dec 29 2011, 11:15PM
Platinum Registered Member #3926 Joined: Fri Jun 03 2011, 08:32PM
Location: UK.
Posts: 525
I wish I could get my hands on that much stuff, in the last year I got 1 camera flash.
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Bjørn
Thu Dec 29 2011, 11:27PM
Bjørn Registered Member #27 Joined: Fri Feb 03 2006, 02:20AM
Location: Hyperborea
Posts: 2058
You only need to add a plastic tube and wire and you have a working coil gun. Link2

I suggest that you stay with a single capacitor for your first three coil guns. Just make something that works and is safe, then you figure out how to improve the next one.
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Platinum
Thu Dec 29 2011, 11:31PM
Platinum Registered Member #3926 Joined: Fri Jun 03 2011, 08:32PM
Location: UK.
Posts: 525
I have a 420v 1000uF+ yet it is badly inefficient, maily I do not have an SCR, and no plastic barrel (eddy currents ¬¬) yet the metal barrel I have has a bolt on the end which reminds me of a AI's L96.
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Sulaiman
Thu Dec 29 2011, 11:56PM
Sulaiman Registered Member #162 Joined: Mon Feb 13 2006, 10:25AM
Location: United Kingdom
Posts: 3141
You could collect the electrolytic capacitors and make an array like mine;
Top view


1325201854 162 FT131162 80u4kvtop


Bottom view


1325201960 162 FT131162 80u4kvbottom


12 rows of (8x 120uF with 2 series 5W 160V series zener diodes for 320V/row)
Result; 80 uF 3.8kV .. 590 very scary Joules Easily charged with a flyback
Probably Lethal - hardly any use!
(anyone want it for p&p and no liabilities of any kind?)
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Platinum
Fri Dec 30 2011, 12:00AM
Platinum Registered Member #3926 Joined: Fri Jun 03 2011, 08:32PM
Location: UK.
Posts: 525
How do you get so many?
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Thomas W
Fri Dec 30 2011, 12:12AM
Thomas W Registered Member #3324 Joined: Sun Oct 17 2010, 06:57PM
Location:
Posts: 1276
i dont know how he does, but he sent me a huge load of those little ones (i think i counter 204 thanks :)
(Damn i need to use some of the things you sent me :/
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Jeff H
Fri Dec 30 2011, 01:44AM
Jeff H Registered Member #4298 Joined: Thu Dec 29 2011, 09:42PM
Location:
Posts: 6
Sulaiman wrote ...

You could collect the electrolytic capacitors and make an array like mine;
Top view


1325201854 162 FT131162 80u4kvtop


Bottom view


1325201960 162 FT131162 80u4kvbottom


12 rows of (8x 120uF with 2 series 5W 160V series zener diodes for 320V/row)
Result; 80 uF 3.8kV .. 590 very scary Joules Easily charged with a flyback
Probably Lethal - hardly any use!
(anyone want it for p&p and no liabilities of any kind?)


That's one heck of a bank!
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Tetris
Fri Dec 30 2011, 04:47AM
Tetris Registered Member #4016 Joined: Thu Jul 21 2011, 01:52AM
Location: Gainesville, FL
Posts: 660
Platinum wrote ...

How do you get so many?


CVS people are nice esp. if you've known them for years.
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Alex M
Fri Dec 30 2011, 12:54PM
Alex M Registered Member #3943 Joined: Sun Jun 12 2011, 05:24PM
Location: The Shire, UK
Posts: 552
Salvage half a dozen of the capacitors and xenon flash tubes, then bin the rest.
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