High impedance piezoelectric transducer

Details High impedance piezoelectric transducer High impedance piezoelectric transducer

1988-02-29

1991-01-15

Chin, Tommy P.

Electrical audio signal processing systems and devices

One-way audio signal program distribution

381190, 310366, 310369, 361330, 367155, H04R 1700

Patent

active

049859269

ABSTRACT:
An improved bimorph piezoelectric transducer provides higher input impedance and allows operation at higher operating voltages. First and second piezoelectric elements have opposing electrode patterns which define a plurality of capacitors connected in series. This allows such transducers to be directly connected to high voltage audio distribution systems without the need for an impedance matching circuit.

REFERENCES:
patent: 3093775 (1963-06-01), Lamphier
patent: 3253199 (1966-05-01), Cozens
patent: 3292063 (1966-12-01), Kellerman
patent: 3493825 (1970-02-01), Khouri
patent: 3548116 (1970-12-01), Schafft
patent: 3745431 (1973-07-01), Imamura
patent: 3894198 (1975-07-01), Murayma
patent: 4078160 (1978-03-01), Bost
patent: 4389548 (1983-06-01), Morikawa
patent: 4401857 (1983-08-01), Morikawa

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