Ignition Coil Question
I have put together a camera circuit as an spark ignition (this one here): http://www.spudfiles.com/forums/high-po ... 10486.html
and have wired it up to an ignition coil as shown in the tutorial (this one): http://www.trademe.co.nz/Browse/Listing ... =142048864
Unfortunately its a bit bulky so I'm looking for a smaller coil. I found this one here: http://www.trademe.co.nz/Browse/Listing ... =141907286
The smaller coil is in a different form factor though so I'm a bit confused. Would it work for the camera flash circuit above?
and have wired it up to an ignition coil as shown in the tutorial (this one): http://www.trademe.co.nz/Browse/Listing ... =142048864
Unfortunately its a bit bulky so I'm looking for a smaller coil. I found this one here: http://www.trademe.co.nz/Browse/Listing ... =141907286
The smaller coil is in a different form factor though so I'm a bit confused. Would it work for the camera flash circuit above?
- mark.f
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Here's my suggestion: stick with the larger coil. I played around with one of those coils and fried it with only a 12 volt battery, much less a photoflash capacitor...
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That's because it specifically said not to be used with a 12V battery .markfh11q wrote:Here's my suggestion: stick with the larger coil. I played around with one of those coils and fried it with only a 12 volt battery, much less a photoflash capacitor...
I Googled about that type of coil, and apparently it's designed to run off a high voltage DC discharge from a capacitor. That sounds like a camera flash to me, although what size cap it should be, or what voltage is beyond me.
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I did some Googling around, and found this:
http://www.next.gr/view-link.php?id=353
This design uses a 2uF cap charged to about 340V.
The cap in a camera flash is much larger, but you can change it easily enough.
The real problem is the 340V; most camera flashes I see only go up to about 200V.
I'm not sure if it won't give you a spark, or just give you a smaller spark.
http://www.next.gr/view-link.php?id=353
This design uses a 2uF cap charged to about 340V.
The cap in a camera flash is much larger, but you can change it easily enough.
The real problem is the 340V; most camera flashes I see only go up to about 200V.
I'm not sure if it won't give you a spark, or just give you a smaller spark.
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- rcman50166
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look up what a marx generator is. That is much more effective than any ignition coil, camera circuit, or tazer could possibly be. And even an idiot could make one!
- jimmy101
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I've looked at several flash boards from disposable cameras and they all charge to better than 300V.TurboSuper wrote:The real problem is the 340V; most camera flashes I see only go up to about 200V.
Not sure how you figure that. You need a pile of suitable capacitors, a fairly large construct to house all the caps and gaps, a voltage supply, etc.rcman50166 wrote:look up what a marx generator is. That is much more effective than any ignition coil, camera circuit, or tazer could possibly be. And even an idiot could make one!
A stungun is cheaper and a heck of a lot simpler. A photoflash is cheaper but a bit more difficult to get to work properly. A photoflash + igntion coil is trivially simple, fairly cheap and much easier to get to very high voltages than a Marx Generator.
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Oh, well I guess the flash board I had sucked then.
Anywho, it's a trivial matter that can be easily solved with a multimeter in a matter of seconds.
Anywho, it's a trivial matter that can be easily solved with a multimeter in a matter of seconds.
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Thanks for the suggestions. Unfortunately I'm in a country (NZ) where stunguns are illegal so as jimmy101 said my next best alternative is a photflash + ignition coil. Does anyone know if smaller coils like the one linked to in my first post would work with a photoflash instead of the big 12v ones?
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Do you suffer from chronic amnesia or something? We've been in the process of answering that very question all day, haven't we?revans wrote:Thanks for the suggestions. Unfortunately I'm in a country (NZ) where stunguns are illegal so as jimmy101 said my next best alternative is a photflash + ignition coil. Does anyone know if smaller coils like the one linked to in my first post would work with a photoflash instead of the big 12v ones?
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Maxus: I have seen that tutorial having searched for it previously and having used it to make the camera flash circuit I have right now. I know there are photos of the circuit being used with a similar small coil but they are not the same as what I linked to and I was merely wondering if anyone who might know of or have used such a coil could give me a definitive yes or no about whether it would work. Cheers.
- MaxuS the 2nd
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You just need to find the outputs using a voltmeter.