simple Ignition Module

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pulsepower
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simple Ignition Module

Post by pulsepower » Thu Jun 30, 2011 2:23 pm

hey, I took a look at my mootcycle and had the Idea to just use an ignition coil like this one: http://cgi.ebay.de/Universal-Racing-Zun ... 483d263397
to fire the sparkplug. Would it work if you just connect it to a 12 V Battery?

Mark
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Re: simple Ignition Module

Post by Mark » Thu Jun 30, 2011 3:49 pm

pulsepower wrote:hey, I took a look at my mootcycle and had the Idea to just use an ignition coil like this one: http://cgi.ebay.de/Universal-Racing-Zun ... 483d263397
to fire the sparkplug. Would it work if you just connect it to a 12 V Battery?
Try it and see. But seriously, you need to switch the battery on and off to get a spark. In that respect it's kind of like a piezo sparker, a constant pressure produces no spark. It's the fluctuation in pressure or electricity that creates the high voltage.
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pulsepower
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Re: simple Ignition Module

Post by pulsepower » Thu Jun 30, 2011 6:09 pm

that shouldn't be a problem,because the coil will probably vibrate if there's current on it and maybe you can use this vibration.I'll trie out and tell you.
By the way,I'll try to built an ignitoin module from a stroboskope or what ever it's called in english,bu here's a link to what i mean:
http://cgi.ebay.de/Stroboskop-Blitzer-E ... 5ae0e9f3e7

Mark
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Re: simple Ignition Module

Post by Mark » Thu Jun 30, 2011 9:35 pm

Remember you want an ignition that won't kill you if you should accidentally become part of the high voltage system. Pulsejets are very distracting and it only takes "one time" to forget your concentration with a lethal voltage as mentioned in this strobe article.
"Since the circuit operates at greater than mains potential and is not isolated by a transformer, it is extremely dangerous. The DC operating potential is about 340V, and there is more than enough stored charge to kill you many times over (although in my experience, once is usually sufficient). This is not meant to be funny - this is truly serious stuff. In addition, the circuitry usually is directly mains (line) powered, with no isolation. Discharge all capacitors before working on any flash system."
http://sound.westhost.com/project65.htm
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Mike Everman
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Re: simple Ignition Module

Post by Mike Everman » Fri Jul 01, 2011 2:02 am

Yeah, don't mess with it. Go to the junkyard for a clothes dryer ignition module. It bites, but does not kill.
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Viv
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Re: simple Ignition Module

Post by Viv » Fri Jul 01, 2011 3:26 pm

Mark wrote:Remember you want an ignition that won't kill you if you should accidentally become part of the high voltage system. Pulsejets are very distracting and it only takes "one time" to forget your concentration with a lethal voltage as mentioned in this strobe article.
"Since the circuit operates at greater than mains potential and is not isolated by a transformer, it is extremely dangerous. The DC operating potential is about 340V, and there is more than enough stored charge to kill you many times over (although in my experience, once is usually sufficient). This is not meant to be funny - this is truly serious stuff. In addition, the circuitry usually is directly mains (line) powered, with no isolation. Discharge all capacitors before working on any flash system."
http://sound.westhost.com/project65.htm
Mark is perfectly correct, a strobe driver is not a safe ignition source under any circumstances! the circuit quoted is a very nice one for the job intended but if it was built incorrectly with out R6 or R7 it would remain live even after it was turned off and unplugged from the mains supply for a significant period.

Take Mikes advice and look for a commercial gas igniter unit that is battery powered (it will still make you cry when it bites but it wont kill you;-)

Viv
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