High power piezoelectric bender

Details High power piezoelectric bender High power piezoelectric bender

H - Electricity

04

R

356/200, 349/67.

H04R 17/00 (2006.01) H01L 41/04 (2006.01) H01L 41/08 (2006.01) H01L 41/09 (2006.01)

Patent

CA 1055146

HIGH POWER PIEZOELECTRIC BENDER ABSTRACT A bimorph bender is comprised of a pair of piezoelectric circular discs having diametrically opposed surface portions. Signal carrying electrodes are formed contiguous with each surface portion. A center vane is sandwiched between the discs maintaining them in a fixed spaced relation. The bender dishes in response to the electrical signals appear- ing at the electrodes. Mechanical coupling to the bender is provided by a washer which is affixed in the central portion of the bender. The washer is made of a high specific stiffness material for maintaining a high electro-mechanical coupling factor. The resulting structure provides a highly reliable and efficient power transducer.

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