Effects of electrode layouts on electrical characteristics for unipoled step-down piezoelectric transformers

Author

Bai, Feng-Xian ; Dong, Wei-Jie ; Xu, Yong-Jie

Author_Institution

Sch. of Electron. & Inf. Eng., Dalian Univ. of Technol., Dalian, China

fYear

2009

fDate

23-27 Aug. 2009

Firstpage

1

Lastpage

5

Abstract

The electrical characteristics of single layer unipoled step-down piezoelectric transformers are investigated. The configuration of PT is circle-circle, where the inner circle is input and outer ring is output. The electrical characteristics simulation and performance test are focused on voltage gains and output power. Moreover, effects of input and output electrode area on voltage gains and output power are discussed. It was shown that a good voltage step-down effect accompanied with not ideal output power is obtained from small input/output area ratio. The step-down ratio of 0.12 with an efficiency of 93% is obtained at R_L=20 Omega in the PT with input inner diameter of 7 mm, gap of 1 mm and disc diameter of 30 mm.

Keywords

electrodes; piezoelectric devices; transformers; electrical characteristics simulation; electrode layout effect; unipoled step-down piezoelectric transformer; Capacitance; Consumer electronics; Electric variables; Electrodes; Equivalent circuits; Personal digital assistants; Power generation; Testing; Transformers; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics, 2009. ISAF 2009. 18th IEEE International Symposium on the

Conference_Location

Xian

ISSN

1099-4734

Print_ISBN

978-1-4244-4970-5

Electronic_ISBN

1099-4734

Type

conf

DOI

10.1109/ISAF.2009.5307543

Filename

5307543