I would like to know the pulse shape of the piezo ignitor from a BBQ lighter, but I haven't got an oscilloscope. Is it AC, a single monopolar pulse, or a bipolar pulse, or a dampened oscillation?
Probably the pulse shape depends on its design, so I dissected the piezo ignitor of a BBQ lighter. Please see the image at
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. The piezo electric body is apparently composed of two parts: the major part is a cup or a bottom, probably made of brass. Question: is this just backing material? The minor part is the grey matter inside the cup. The grey matter doesn't have a distinct shape. Question: is the grey matter inside the piezo ceramic (PZT)?