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Forums
4hv.org :: Forums :: High Voltage
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Whats the absolute smallest flyback ever?

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Adam Munich
Fri Nov 26 2010, 06:59PM
Adam Munich Registered Member #2893 Joined: Tue Jun 01 2010, 09:25PM
Location: Cali-forn. i. a.
Posts: 2242
Using a piezo to ignite the arc is a good idea, but remember air movement will blow it out.

You could possibly wind the coil yourself, but you'll need something like 20,000 turns of 38awg wire, and that's not going to be fun or cheap to do. You're best buying a small transformer ready made.

If you can find an old camcorder, they have tiny FBTs in them to power the tiny crts.
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radiotech
Fri Nov 26 2010, 07:11PM
radiotech Registered Member #2463 Joined: Wed Nov 11 2009, 03:49AM
Location:
Posts: 1546
There are joke devices out there- one looks like a chewing
gum pack, another like a cigarette lighter. They run on a aaa cell and have a coil buzzer that zaps you when you try and pull a stick of gum out or flick the lighter. About $1.00 each. Good supply for fine wire.
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Alex Smith
Fri Nov 26 2010, 08:09PM
Alex Smith Registered Member #3258 Joined: Wed Sept 29 2010, 06:25PM
Location: Ascot, UK
Posts: 25
Clicky
Hehe ^ this will be my prototype subject.

Anyone have any plans or something for a voltage multiplier like the one at amazing1? I thought you needed AC input for that, meaning I cant use a battery.

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Freitsu
Fri Nov 26 2010, 08:24PM
Freitsu Registered Member #3147 Joined: Sun Aug 29 2010, 10:53AM
Location: Finland
Posts: 56
I'm surprised that noone has mentioned camcorder viewfinder flybacks yet, they're pretty small!
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Alex Smith
Fri Nov 26 2010, 08:28PM
Alex Smith Registered Member #3258 Joined: Wed Sept 29 2010, 06:25PM
Location: Ascot, UK
Posts: 25
Hehe good idea - im going to go to the dump tommorow and ill just try to grab anything I can!
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Adam Munich
Fri Nov 26 2010, 09:23PM
Adam Munich Registered Member #2893 Joined: Tue Jun 01 2010, 09:25PM
Location: Cali-forn. i. a.
Posts: 2242
Freitsu wrote ...

I'm surprised that noone has mentioned camcorder viewfinder flybacks yet, they're pretty small!
Grenadier wrote ...
If you can find an old camcorder, they have tiny FBTs in them to power the tiny crts.
tongue
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Alex Smith
Fri Nov 26 2010, 09:26PM
Alex Smith Registered Member #3258 Joined: Wed Sept 29 2010, 06:25PM
Location: Ascot, UK
Posts: 25
Perpetual motion? STUFF YOU
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Adam Munich
Fri Nov 26 2010, 09:30PM
Adam Munich Registered Member #2893 Joined: Tue Jun 01 2010, 09:25PM
Location: Cali-forn. i. a.
Posts: 2242
Win. :p
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1n5ane
Fri Nov 26 2010, 11:23PM
1n5ane Registered Member #3283 Joined: Wed Oct 06 2010, 11:03PM
Location: Toronto, Canada
Posts: 29
Proud Mary wrote ...

"component parts" - R v Clarke (F) 82 Cr App R.308 CA states that the component part of a prohibited weapon is itself a prohibited weapon.

R v Ashton, CA, 1 February 2007 seems to suggest that any part that stops the weapon functioning as it was designed would be a component part:

Would a capacitor, coil, resistor from a stun gun also classify as a "component"? A stun gun circuit is no more than a pulsed HV source; when it is placed in a stungun enclosure, the purpose/intent is clear. If they where regulating stungun PCBs, they might as well regulate every flyback, photoflash, strobe, etc...

IMO, the "component" provision is geared towards actual prohib weapon components; for example, disassembling a a butterfly knife in an attempt to make it "legal"...
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Adam Munich
Sat Nov 27 2010, 01:21AM
Adam Munich Registered Member #2893 Joined: Tue Jun 01 2010, 09:25PM
Location: Cali-forn. i. a.
Posts: 2242
I don't know, a fully charged 10,000uF 450V cap could be considered a weapon if you attack someone with it. As Einstein once said, everything is relative.
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