| 摘要 |
PROBLEM TO BE SOLVED: To provide a small piezoelectric transformer which is capable of outputting a high power and a large current under a low load. SOLUTION: This piezoelectric transformer has such a structure where a voltage input part 21, voltage output part 22, and a voltage input part 23 are successively formed in a lengthwise direction on the piezoelectric board 17 whose surfaces are both rectangular, inner electrode layers 19 and piezoelectric layers 18 are alternately laminated on the voltage input parts 21 and 23 and the voltage output part 22 respectively, and the piezoelectric layers 18 each formed on the top and under surface of the inner electrode layer 19 are polarized in the direction of lamination and opposite to each other in the direction of polarization and longitudinally vibrated to the crosswise direction of the main surface.
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