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论文类型：会议论文

发表时间：2009-08-23

收录刊物：EI、CPCI-S、Scopus

页面范围：366-370

摘要：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 7mm, gap of 1mm and disc diameter of 30 mm.