Abstract: The invention relates to a method for fabricating piezoelectric composite material comprising steps of mixing a piezoelectric ceramic powder, an adhesive, a cross-linking agent, a lubricant and a plasticizer to form a slurry; extruding the slurry to form a piezoelectric ceramic green fiber; sintering the piezoelectric ceramic green fiber to form the piezoelectric ceramic fiber; arranging the piezoelectric ceramic fiber in a mold according to a predetermined volumetric content; and adding a polymer into the mode to form a polymer matrix of piezoelectric composite material. A piezoelectric power generating device including a piezoelectric power generating element made of the piezoelectric composite material is also provided.

Abstract: A piezoceramic transducer (PZT transducer) and a method for manufacturing the same are provided. The PZT transducer includes a piezoceramic substrate and an electrode unit. The piezoceramic substrate has a first surface and a second surface opposite the first surface, and has a mechanical quality factor (Qm) greater than 1400. The electrode unit has a first electrode and a second electrode. The first electrode is disposed on the first surface and has a first diameter. The second electrode covers the second surface and extends to cover a part of the surface at a periphery of the first surface, and the part of the second electrode covering the second surface has a second diameter. The ratio of the first diameter to the second diameter is 0.498 to 0.502. The PZT transducer has a large mist amount and a long service life.

Abstract: A piezoceramic transducer (PZT transducer) and a method for manufacturing the same are provided. The PZT transducer includes a piezoceramic substrate and an electrode unit. The piezoceramic substrate has a first surface and a second surface opposite the first surface, and has a mechanical quality factor (Qm) greater than 1400. The electrode unit has a first electrode and a second electrode. The first electrode is disposed on the first surface and has a first diameter. The second electrode covers the second surface and extends to cover a part of the surface at a periphery of the first surface, and the part of the second electrode covering the second surface has a second diameter. The ratio of the first diameter to the second diameter is 0.498 to 0.502. The PZT transducer has a large mist amount and a long service life.

Abstract: A piezoelectric buzzer includes a housing unit, a buzzer unit, and first and second terminals. The housing unit includes first and second housings coupled together. The second housing includes a base plate and a pair of spaced apart insert seats, each of which protrudes inwardly from the base plate toward the first housing and is formed with an insert hole. The buzzer unit is disposed in the resonant chamber and includes a vibrating plate and a piezoelectric plate attached to the vibrating plate. The first and second terminals are inserted respectively into the insert holes of the insert seats, and have a respective connection section extending outwardly of the housing unit, and a respective extending section abutting against a respective one of the vibrating plate and the piezoelectric plate.

Abstract: A piezoelectric buzzer includes a housing unit, a buzzer unit, and first and second terminals. The housing unit includes first and second housings coupled together. The second housing includes a base plate and a pair of spaced apart insert seats, each of which protrudes inwardly from the base plate toward the first housing and is formed with an insert hole. The buzzer unit is disposed in the resonant chamber and includes a vibrating plate and a piezoelectric plate attached to the vibrating plate. The first and second terminals are inserted respectively into the insert holes of the insert seats, and have a respective connection section extending outwardly of the housing unit, and a respective extending section abutting against a respective one of the vibrating plate and the piezoelectric plate.