![Sample our Physical Sciences journals, sign in here to start your FREE access for 14 days]({"type":"image" , "src" : "/sda/110819/TOC-Subject-Sample-2021-Physical-Sciences.jpg"})
Abstract
Many types of piezoelectric transformer (PT) have been developed for more than 50 years. In this research, the voltage gain (V-gain) from circular ring/dot type PTs which have 2–3 mm thicknesses and 1–7 input/output area ratios (i/o area) was investigated under the criteria of 104–106 Hz input voltage (Vin) and 500–100,00 Ω connected load resistance (RL). Results showed that 1) The maximum V-gain was located near its 1st resonance frequency measured on input electrode, 2) The V-gain was significantly increased with i/o area and RL. 3) Large V-gain was obtained in high i/o area PT connected to large enough load resistance.
Acknowledgment
The authors would like to thank Narong Pimpru for his assistance with electrical measurements. The financial support of this work by Suranaree University of Technology is also gratefully acknowledged.