title: Lead-free multilayer piezoelectric transformer.
abstract: In this article, a multilayer piezoelectric transformer based on lead-free Mn-doped 0.94(Bi(12)Na(12))TiO(3)-0.06BaTiO(3) ceramics is presented. This piezoelectric transformer, with a multilayered construction in the thickness direction, is 8.3 mm long, 8.3 mm wide, and 2.3 mm thick. It operates in the second thickness extensional vibration mode. For a temperature rise of 20 degrees C, the transformer has an output power of >0.3 W. With a matching load resistance of 10 Omega, its maximum efficiency approaches 81.5%, and the maximum voltage gain is 0.14. It has potential to be used in low voltage power supply units such as low power adapter and other electronic circuits.
authors.affiliation: Department of Applied Physics, The Hong Kong Polytechnic University, Hunghom, Kowloon, Hong Kong, China. gmsone_cn@hotmail.com
authors.forename: Mingsen
authors.initials: M
authors.lastname: Guo
authors.forename: X P
authors.initials: XP
authors.lastname: Jiang
authors.forename: K H
authors.initials: KH
authors.lastname: Lam
authors.forename: S
authors.initials: S
authors.lastname: Wang
authors.forename: C L
authors.initials: CL
authors.lastname: Sun
authors.forename: Helen L W
authors.initials: HL
authors.lastname: Chan
authors.forename: X Z
authors.initials: XZ
authors.lastname: Zhao
mesh_terms: D002516:Ceramics; D004560:Electricity; D007854:Lead; D014159:Transducers
chemical_list: D007854:Lead