Picture of 20,000v Flyback Transformer
This is a Flyback Transformer connected to a quick charge capacitor and 2 camera flash circuits

Do not attempt this instructable if you have no prior experience with high voltage, or if you have a dodgy heart.
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Step 1: Tools and Materials

Picture of Tools and Materials
caps and flyback.jpg
You will need:
-A soldering iron
-a capacitor (see picture)
-a Flyback Transformer
-a switch
-2 Kodak camera flash circuits
-a battery holder
-2 AA batteries

Step 2: Camera circuits

On this instructable http://www.instructables.com/id/Coilgun-Handgun/, follow step 1 on how to make a mini charger-circuit. Link the outputs in parallel. Then, connect the inputs in series so they will run off 3v. If they don't work, try putting some diodes in and check your connections. Solder the circuits on the battery holder. 

NB, having 2 charger circuits is not essential, one will do the job just fine 

Step 3: The Flyback

Picture of The Flyback
Follow the instructions on this website http://lifters.online.fr/lifters/labhvps/tht.htm on how to find the primary and secondary coils on a Flyback transformer. Or wind your own primary coil. Solder some wires on and your ready for the next step!

Step 4: The Capacitor and Switch

Picture of The Capacitor and Switch
Solder the capacitor on one of the wires of the Flyback, and the switch on the other. Then solder the other end of the capacitor and the other end of the switch together, making a circuit. Tape it all to the side of the Flyback.

Step 5: Last Step!

Finally, solder the 2 outputs of the camera circuits onto the capacitor, in such a way so when the circuits are switched on, the capacitor charges.

Now put the batteries in the battery holder, turn it on and push the switch while the 2 output wires of the Flyback are about 1-2cm apart, and, look! a spark!

This circuit also works with a car ignition coil in place of the flyback.
admin5 years ago
Hey, this is a great instructable and is very informative. Just one thing is missing... pictures! It really helps a lot when trying to follow directions so you should consider taking some photographs. Once you do that and leave me a message when you have so that we can publish your work. Thanks! Thanks for the cool instructable and we hope to publish this soon!
Xellers5 years ago
Quite honestly, this isn't the greatest way of going about generating high voltage, but if you replaced the charging source with something a little more powerful, wound your own primary coil and selected a capacitor that would resonate with the flyback's secondary coil, and added some sort of solid state triggering mechanism (an IGBT, for instance), then this could get interesting....
slipknot rules (author)  Xellers5 years ago
 thanx 4 your input Xellers, this is my first instructable, so i tried to keep it simple; something you could throw together in 5 mins or so. The only thing i made this circuit for is just for making sparks, nothing practical :)
even that can be done in a simpler way try this
would this this work better?
That is an inductor, not a capacitor.
slipknot rules (author)  RocketPenguin5 years ago

well the capacitince isnt that high, so i think that the greenish coloured one would give a better spark but i say go for it! the world was built around tinkering and trying new things.

ikeike405 years ago
ouwelou5 years ago
i didn't understand the first step can someone help me plz
slipknot rules (author)  ouwelou5 years ago
the gettin tha materials step? or the 1 aft it
can i use this cap?
slipknot rules (author)  RocketPenguin5 years ago
 whats the voltage on it
the numbers/letters are; 364j  dh
                                             250 sa v

P.S. i got it from a old tv
slipknot rules (author)  RocketPenguin5 years ago
um well the voltage is high enough, and the 364j means that its capacitance is about 0.34uF so yea i say go for it but u mite not gt a realli big spark :D
Why use the capacitor across the leads of the output of the Camera Charger Circuits?
slipknot rules (author)  Crimson-Deity5 years ago
because the capacitor gets charged this way. if u hav any suggestions for cool mods to the circuit, i would like to know :)
I got that..

But what is the fungsjon of it? What does it do?
slipknot rules (author)  Crimson-Deity5 years ago
When the camera circuits are turned on it charges the capacitor. when you press the switch this discharges all the stored energy from the capacitor into the transformer. this small amount of energy (low voltage-200v or so) gets turned into a high voltage spark by the transformer. when you take your finger off the switch microseconds after the spark occurs, the whole process repeats itself.
BobLew5 years ago
what should i do with the other pins?
sometimes spark occured between them.
especialy some closest pins with ground pin.
one of pin closest is also draws purple spray, but never spark
slipknot rules (author)  BobLew5 years ago
 cover all of them in hot glue or somethin else. :)