Title :
An advanced design of piezoelectric ceramic transformer for high voltage source
Author :
Hirose, Seiji ; Shimizu, Hiroshi
Author_Institution :
Fac. of Eng., Yamagata Univ., Yonezawa, Japan
Abstract :
The basic characteristics of a novel ceramic transformer are studied in detail. Because the input section consists of laminated ceramic strips and each strip can be made very thin, the input driving voltage can be very low. The output section consists of four piezoelectric ceramic columns utilizing k33. These columns are electrically connected in series, so that the induced voltages are added up, and therefore a very high output voltage can be obtained. Experimental results show that the transformation ratio is about 200, i.e. 40 to 50 times greater than of the existing ceramic transformer. It is confirmed that this ceramic transformer is useful for a high-voltage source
Keywords :
piezoelectric devices; power supplies to apparatus; power transformers; ceramic transformer; laminated ceramic strips; piezoelectric ceramic columns; transformation ratio; Capacitance; Ceramics; Equivalent circuits; Impedance; Power transformer insulation; RLC circuits; Resonant frequency; Strips; Voltage; Wires;
Conference_Titel :
Ultrasonics Symposium, 1989. Proceedings., IEEE 1989
Conference_Location :
Montreal, Que.
DOI :
10.1109/ULTSYM.1989.67029
