Patent
Piezoelectric transducer and noise making device utilizing same
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TLDR
In this article, a noise-making device using a piezoelectric transducer is described, which includes a metal crystal, first and second electrode means carried by the crystal, and dividing one of the electrode means into electrically isolated areas so as to provide a third electrode means.Abstract:
A noise making device, using a piezoelectric transducer, includes a piezoelectric element mechanically coupled to a substrate and an electrical circuit for energizing the transducer. The piezoelectric element includes a piezoelectric crystal, first and second electrode means carried by the crystal, and means dividing one of the electrode means into electrically isolated areas so as to provide a third electrode means.read more
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