Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 1995.07c
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- Pages.1140-1142
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- 1995
Electrical Properties of a Laminated Piezoelectric Transformer with the Divided Electrodes
전극 분할 적층형 압전변압기의 전기적 특성
- Lee, Yong-Kuk (Dept. of Electrical Eng. Kon-kuk Univ.) ;
- Lee, Sang-Cheal (Dept. of Electrical Eng. Kon-kuk Univ.) ;
- Hur, Doo-Oh (Dept. of Electrical Eng. Kon-kuk Univ.) ;
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Han, Deuk-Young
(Dept. of Electrical Eng. Kon-kuk Univ.)
- Published : 1995.07.20
Abstract
The transformer is fabricated with two piezoelectric vibrator with the divided electrodes and adhesive insulator. We applied the electric input to the driving vibrator in parallel and connect the output voltage to the generating vibrator in series to the resistor load near its fundamental resonance frequency. Then we investigate output voltage in series twice as large as in parallal. Moreover we investigate the load characteristics at resonance frequencies under various resistor and the frequency characteristics near the resonance frequency under no load. Its equvalent circuit is derived from the Mason's model of a thickness-driven piezelectric vibrator. By its equevalent circuit, symbolic expressions for input impedances, voltage ratios, resonance frequencies, and bandwidths have been derived. The values calculated from those symbolic exprssions are shown to agree well with the measurement values.
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