The Transactions of the Korean Institute of Electrical Engineers D (대한전기학회논문지:시스템및제어부문D)

The Korean Institute of Electrical Engineers (대한전기학회)
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Steady-state Characteristics of the Piezoelectric Transformer and the Design of the Piezoelectric Inverter for Cold Cathode Fluorescent Lamp

압전 변압기의 정상상태 특성과 고효율 냉 음극 방전램프용 인버터 설계

  • Published : 2000.04.01
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Abstract

The back-light inverter used in the laptop computer is designed in this paper. It has been difficult for electromagnetic transformer to enhance the efficiency and compact profile of the inverter. In this paper, (1) the piezoelectric transformer (PT) is used for reducing the loss; (2) the volumes of core and winding coil are used in electromagnetic transformer, and (3) the half-bridge series parallel resonant circuit is used in the driver of the inverter. The modified PT for this paper and the equivalent circuit are supported by the simulation program. The result of the experiment shows more than 91% improvement in terms of the efficiency.

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References

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