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4hv.org :: Forums :: General Science and Electronics
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Can anyone help me?

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Ash Small
Sat Nov 27 2010, 01:05PM
Ash Small Registered Member #3414 Joined: Sun Nov 14 2010, 05:05PM
Location: UK
Posts: 4245
The flyback coil (line output coil) from an old TV or monitor will give bigger sparks, but these can be anywhere from 20,000 to 50,000 volts so you obviously have to be pretty careful with them.

See my earlier post for more infomation on them.
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Adam Munich
Sat Nov 27 2010, 03:35PM
Adam Munich Registered Member #2893 Joined: Tue Jun 01 2010, 09:25PM
Location: Cali-forn. i. a.
Posts: 2242
walshy155 wrote ...

Well OK then ,but is there any more powerful transformers I can get to have a nice spark?

How about this? Essentially you hook an ignition coil in series with a light dimmer and a capacitor. Link2
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LIGHT
Sat Nov 27 2010, 10:41PM
LIGHT Banned on 4/6/2011 for unsafe, irresponsible behavior.
Registered Member #3442 Joined: Fri Nov 26 2010, 04:09AM
Location: ....
Posts: 114
Hmm I dont have a ignition coil, but I do have a old CRT monitor and a old TV, so maybe I can get that and use a dimmer switch, then I'll have a pretty nice spark.
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Adam Munich
Sat Nov 27 2010, 10:45PM
Adam Munich Registered Member #2893 Joined: Tue Jun 01 2010, 09:25PM
Location: Cali-forn. i. a.
Posts: 2242
You can't use the dimmer switch circuit with a flyback transformer. Go to your local junkyards, an ignition coil like that costs about 7 dollars.
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LIGHT
Sat Nov 27 2010, 11:01PM
LIGHT Banned on 4/6/2011 for unsafe, irresponsible behavior.
Registered Member #3442 Joined: Fri Nov 26 2010, 04:09AM
Location: ....
Posts: 114
-.-"

I have 2 flybacks ready though. To be stripped.

Can I use them? in another way, and thnaks to all the replys.
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Adam Munich
Sat Nov 27 2010, 11:02PM
Adam Munich Registered Member #2893 Joined: Tue Jun 01 2010, 09:25PM
Location: Cali-forn. i. a.
Posts: 2242
Well sure, here's a use for them. Link2
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Ash Small
Sat Nov 27 2010, 11:23PM
Ash Small Registered Member #3414 Joined: Sun Nov 14 2010, 05:05PM
Location: UK
Posts: 4245
You should get sparks out of it just by touching the wires from a 9v or 12v battery on it, or any of the suggestions in my previous posts.

You do need to be careful, though, as I mentioned before, but you are unlikely to get more than a few milliamps out of it, even with a good driver circuit. It shouldn't kill you, but you still need to be careful.
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LIGHT
Sat Nov 27 2010, 11:25PM
LIGHT Banned on 4/6/2011 for unsafe, irresponsible behavior.
Registered Member #3442 Joined: Fri Nov 26 2010, 04:09AM
Location: ....
Posts: 114
Hmm, I though flybacks had enough amps to kill you?

but I know MOT's will fry you.

And thanks Grenadier and Ash.
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LIGHT
Sat Nov 27 2010, 11:28PM
LIGHT Banned on 4/6/2011 for unsafe, irresponsible behavior.
Registered Member #3442 Joined: Fri Nov 26 2010, 04:09AM
Location: ....
Posts: 114
Also is there any way I could just hook a supply to a flyback, without cutting the other coils off it?
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Ash Small
Sat Nov 27 2010, 11:29PM
Ash Small Registered Member #3414 Joined: Sun Nov 14 2010, 05:05PM
Location: UK
Posts: 4245
Treat it as if it might kill you. read up on them first and take all the safety precautions you can.

Do your homework before you connect it up.
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