Abstract
The piezoelectric constants of a Pb(Zr, Ti)O3 (PZT) transducer are experimentally determined using the transient response. When a step voltage is applied to the transducer, the resonance frequency fr of the transducer is determined from the frequency spectrum of the motional transient-current waveform under a low-electrical-source-impedance condition. Under a high electrical source impedance, the antiresonance frequency fa and the free capacitance CF of the transducer can also be determined. Piezoelectric constants obtained by our method agree well with those obtained by the conventional method.
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