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Voltage output of piezoelectric in lighter

G

Gofilord

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So you know in some lighters you'll find a little element that when clicked, outputs a short pulse of voltage that ignites the lighter's gas.
It uses a piezoelectric element, but my question is how much voltage does it put out in a click?

My multimeter doesn't get really high to test it. Is there any chance that it's less than a KV?

Thanks
 





Eudaimonium

Eudaimonium

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It's a hell of a lot, something like 5-10kV but current is low enough to make it safe to zap everybody in class.
 
bobhaha

bobhaha

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I think its around 15-25KV

Takes around 25KV to jump a 1 inch air gap.
 
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G

Gofilord

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How can that be possible, I have a 1" piezo element from a speaker, and when I hit it with a stick it puts out max 15V
 
Eudaimonium

Eudaimonium

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The pulse is so short you cannot possibly measure it accurately with DMM, and not sure about your oscilloscope but you may, or may not damage it's internal circuitry by shooting very high voltages through it.

Trust me;
Spark ~ 1cm = Several kilovolts.
 
G

Gofilord

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Actually, the most I could get of the component from the lighter is ±4mm
PS, please answer my PM :)
 
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