Lead-free multilayer piezoelectric transformer.
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.
Guo
Mingsen
M
Department of Applied Physics, The Hong Kong Polytechnic University, Hunghom, Kowloon, Hong Kong, China. gmsone_cn@hotmail.com
Jiang
X P
XP
Lam
K H
KH
Wang
S
S
Sun
C L
CL
Chan
Helen L W
HL
Zhao
X Z
XZ
D002516:Ceramics; D004560:Electricity; D007854:Lead; D014159:Transducers
D007854:Lead