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open a fire tourch, you should find something like A RECTANGLE swich with to contacts on one side. this is a pizo it makes over 1kvdc so just mount it soder two wires and make a gap press the bution spark!
(ill post pictures in a cuple days) :lol:
Its not your camera, its just that sparks are a *very* brief affair and rather difficult to catch with a camera. Though you could have tried to get whatever makes the spark into focus (you might have to use the macro setting)
It has only one wire.Thats one pole,the other pole is the metal cilinder on the botom
But electrycety arcs to someone else becose the body has capacitence (100-200 pF) and becose there is a ground conectin to you and your toching toching the cilinder (other pole)
I once used my body as an cap in an 555 timer circuit.Ti was fun (i just codn't stop playing whith it) the harde you sued your finger on the contacks the lower was the beep coming out of the spaker(try it sometimes)
Ive seen a circuit that uses an piezo lighter whitn an weight on top as an seizmic detector (to detect erthquakes)
I like my "simplest shocker"(in the projects) but for pranks you beter put an resistor in (it can be painful)