New piezoelectric transformer converter for AC-adapter

Author

Zaitsu, Toshiyuki ; Fuda, Yoshiaki ; Okabe, Yoshiharu ; Ninomiya, Tamotsu ; Hamamura, Sunao ; Katsuno, Masafumi

Author_Institution

Transmission Device Dev. Dept., NEC Corp., Kawasaki, Japan

Volume

2

fYear

1997

fDate

23-27 Feb 1997

Firstpage

568

Abstract

A new piezoelectric transformer (PT) converter which functions as an AC-adapter is proposed. The device´s PT operates in longitudinal-vibration mode and features good isolation, incombustibility and compact size. The PT was implemented as a part of the new AC-adapter and a significant reduction in size was achieved as a result. Experimental evaluation of the new adapter confirms that good performance was successfully obtained in spite of the need to comply with strict safety and noise standards

Keywords

AC-DC power convertors; piezoelectric devices; power transformers; rectifying circuits; AC/DC power conversion; compact size; isolation; longitudinal-vibration mode operation; noise standards; performance tests; piezoelectric transformer power converter; safety standards; Application software; Commercialization; Inverters; Magnetic materials; National electric code; Power generation; Power transformer insulation; Research and development; Safety; Vibrations;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 1997. APEC '97 Conference Proceedings 1997., Twelfth Annual

Conference_Location

Atlanta, GA

Print_ISBN

0-7803-3704-2

Type

conf

DOI

10.1109/APEC.1997.575615

Filename

575615