Piezoelectric transformer
AssigneeNEC Corporation
InventorsNaoto Taihaku, Takayuki Inoi
Life of this patent
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Abstract
A piezoelectric transformer element 1 is supported by a plurality of contact pins 5b provided on a printed wiring board 6. The contact pins are directly contacted to lower electrodes of the piezoelectric transformer element at its nodal points. An insulating case 4 accommodating the piezoelectric transformer element 1 is provided with a plurality of leads 3 which contact upper electrodes of the piezoelectric transformer element 1 at its nodal points. The insulating case 4 and the printed wiring board are combined together to provide electrical connection between the leads and wirings of the printed wiring board.
Claims14
A piezoelectric transformer comprising:
- a piezoelectric transformer element provided with a plurality of upper electrodes and a plurality of lower electrodes on upper and lower faces of a piezoelectric member having a rectangular parallelepiped shape;
- an insulating case provided with a plurality of leads to be brought into contact with said plurality of upper electrodes, respectively, by means of a spring force of each of said leads;
- and a printed wiring board provided with a plurality of contact pins to be brought into contact with said plurality of lower electrodes of said piezoelectric transformer element;
- and a means for integrating said insulating case and said printed wiring board into one body.
A piezoelectric transformer comprising:
- a piezoelectric transformer element of a third order Rosen type having three nodal points at three electrode positions on upper and lower faces thereof, respectively;
- an insulating case provided with three narrow leads to be brought into contact with the upper electrodes provided on said three positions of said piezoelectric transformer element by means of a spring force of said leads;
- and
- a printed wiring board provided with three contact pins to be brought into contact with the lower electrodes of said piezoelectric transformer element.
Dependencies are inferred from the claim text.