M. Yamamoto, Y. Sasaki, T. Inoue, A. Ochi, S. Hamamura
{"title":"Piezoelectric transformer for 30 W output AC-DC converters","authors":"M. Yamamoto, Y. Sasaki, T. Inoue, A. Ochi, S. Hamamura","doi":"10.1109/ISAF.2002.1195940","DOIUrl":null,"url":null,"abstract":"A piezoelectric transformer using AC-DC converters is described that has a multilayered construction in the thickness direction and operates in contour-extensional vibration mode. The output impedance is designed to be low - approximately several tens of ohms. Testing of a fabricated transformer 14 mm long, 14 mm, wide, and 5.8 mm showed that it had a 0.4 gain, 26 W output power, and 96.3% efficiency at 135 kHz when the temperature increase was 30/spl deg/C. A fabricated AC-DC converter with this transformer had good line and load regulation and a maximum efficiency of 90.2%.","PeriodicalId":415725,"journal":{"name":"Proceedings of the 13th IEEE International Symposium on Applications of Ferroelectrics, 2002. ISAF 2002.","volume":"64 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2002-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the 13th IEEE International Symposium on Applications of Ferroelectrics, 2002. ISAF 2002.","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISAF.2002.1195940","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
A piezoelectric transformer using AC-DC converters is described that has a multilayered construction in the thickness direction and operates in contour-extensional vibration mode. The output impedance is designed to be low - approximately several tens of ohms. Testing of a fabricated transformer 14 mm long, 14 mm, wide, and 5.8 mm showed that it had a 0.4 gain, 26 W output power, and 96.3% efficiency at 135 kHz when the temperature increase was 30/spl deg/C. A fabricated AC-DC converter with this transformer had good line and load regulation and a maximum efficiency of 90.2%.
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