Schematic fly

A place for general potato gun questions and discussions.
Hitler_the_spud
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Fri Feb 17, 2006 1:27 am

for those who can make as in solder or follow these schematics here is a great ignition for a combustions if you need one there 30 dollors 8)
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Urban Ninja
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Fri Feb 17, 2006 1:59 am

would this make a continuous spark? I would have thought it would.
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beebs111
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Fri Feb 17, 2006 7:47 am

yup thats what flybacks do :D
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FiveseveN
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Fri Feb 17, 2006 9:51 am

Oh, there are plenty of HV circuits out there, either based on ignition coils or TV flybacks or cascades. You don't need to go through all that trouble (see schematic above). You can make a very simple flyback driver using only one transistor. Here are some good resources (to save you the time):

Jochen's HV page: great one http://www.kronjaeger.com/hv/
Power Labs HV: another great site (and a simple flyback driver - as simple as it gets) http://www.powerlabs.org/flybackdriver.htm
Electronics Lab http://www.electronics-lab.com/projects/misc/016/
Hitler_the_spud
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Fri Feb 17, 2006 12:47 pm

the pont is mine is small and not bulky this would fit in a 1 1/2 pipe so its a bit more complex. plz do some research before you post you "siimple" iDEAS i thought i would be nice and help out. this is gauntee to fire ever time. :x
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FiveseveN
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Sat Feb 18, 2006 6:45 am

I have researched every possible portable HV generator on the Internet. Took about a week. Settled on a Wimshurst machine myself.
Your schematic uses a flyback, too, and that's the largest part, so I don't see how it could possibly be smaller than Jochen's simple driver, par example:

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Plus, that kind of spark frequency is total overkill for an ignition source. You only need one pulse. A small Marx generator may be the best choice. It would fit in 1'' pipe and most likely cost less than 30$ for a good number of stages.
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Daemonseed
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Tue Mar 28, 2006 10:18 pm

this would work quite nicely if you had a no-stick push button switch. the only thing i would worry about is getting shocked by the electrodes on the exterior of the gun. these particular circuits will go to anything grounded and tend to jump, probably need some of that spray insulation ontop of tape.
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FiveseveN
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Wed Mar 29, 2006 3:26 am

Yeah, good insulation is a must. It's a good idea to keep the wires at a distance from eachother, too, since it could arc between them, even with good insulation.
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