PIEZOELECTRIC POLYMER FORCE TRANSDUCER WITH AN OUTPUT CIRCUIT

摘要

A transducer system providing extended low frequency response. The system comprises a piezoelectric film transducer (10) which provides a current source type output having low capacity, a capacitor (12) for converting the output of the piezoelectric film transducer (10) into a voltage proportional to the output current of the piezoelectric film transducer (10), and a buffering circuit (16) for providing a predetermined load impedance to the capacitor so as to control the discharge rate of the capacitor and the frequency response of the transducer system.