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#14 Experiments with Plasma Ignition

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Uploaded by on Jun 5, 2009

I've just put together the components that I need to begin studying plasma spark ignition.

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Uploader Comments (PainlessHHO)

  • why only one diode?? can you post the schematic-iìm trying with plasma too..

  • There are eleven diodes, the single is just to stop the AC reversing. Private message me your email address and I'd be happy to email you a schematic.

  • Looking good man ....pretty interesting stuff

  • Thanks jd, I've wanted to start some real experimenting with this stuff for some time now. Check out onecraftdude's plasma videos, they are very interesting.

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  • I use an a/c capacitor for motor starting. You might be able to use others, but that one is designed to discharge fully. I use the 110 vac 300 uF caps. I have tried others and they worked too so I don't think it is the uF rating that matters as much as the voltage. Since the supply voltage is a/c the cap should be also.

    Both a/c and d/c share a common ground on the circuit. I get feedback at my battery and I will probably install a diode at the ground later.

  • No problem, tj. Check out onecraftydude's plasma videos.

  • I'm thinking that my diodes are to blame, I've blown up two capacitors now, even my little 47 uf. I'm assuming that the culprit here is the hvdc getting back to the cap.

    I remember you used an AC cap for your setup, what were it's ratings?

    If I remember correctly, you used a common ground for all parts of your circuit? ...or did you isolate between AC and HVDC ground?

  • I ordered some 1N5408 1000v 3a diodes from bgmicro the other day, hopefully, these will do the job!

  • Just for information purposes, I use 1000 vdc diodes # 1n 5406.

  • Did you have a short circuit? The only time I blow diodes is when I short the a/c side at the spark gap. Usually it is from slag buildup on the plug. The other way I burn diodes is when I spark the plug too fast, but that usually melts the solder joint before it destroys the diodes. A good idea for protecting the diodes is to use a fuse between the diodes and the plug. I ran out of fuses at the show so I removed it from the circuit.

  • Thank you , that makes sense.

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