Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)
- 2008.06a
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- Pages.53-53
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- 2008
Electrical Properties of Rosen Type piezoelectric transformers using Low Temperature Sintering PMN-PNN-PZT ceramics
저온소결 PMN-PNN-PZT계 세라믹스를 이용한 Rosen형 압전변압기의 전기적 특성
- Lee, Sang-Ho (Semyun Univ.) ;
- Yoo, Ju-Hyun (Semyun Univ.) ;
- Kim, In-Sung (KERI) ;
- Song, Jae-Sung (KERI)
- Published : 2008.06.19
Abstract
Piezoelectric transformers have been widely used such as DC-DC convertor, invertor, Ballast, etc. Because, the y have some merits compared with electro-magnetic transformers such as step-up ratio, high efficiency, small size and lg hit weight, etc. Piezoelectric transformer require high electromechanical coupling factor kp in order to induce a large out put power in proportional to applied electric field. And also, high mechanical quality factor Qm is required to prevent mechanical loss and heat generation. In general, PZT system ceramics should be sintered at high temperatures between 1200 and
Keywords
- rosen type transformers;
- electromechanical coupling factor kp;
- mechanical quality factor Qm;
- low temperature sintering;
- solid state sintering