High voltage generating device
AssigneeNippon Soken, Inc.
InventorsTakeshi Tanaka, Hiroshi Yorita, Masahiro Tomita, Toshihiko Igashira
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Abstract
A high voltage generating device with a PZT element is disclosed. The device includes an energization control unit for generating an energization voltage, a PZT element unit for performing voltage conversion in response to an output from the energization control unit, and a load unit for receiving an output from the PZT element unit. The PZT element unit is provided with a resonating member and an electrostrictive element, and a period of an output voltage from the energization control unit is controlled so that a primary voltage from the PZT element unit becomes maximum at a timing when the output voltage from the energization control unit is not supplied.
Claims8
A high voltage generating device comprising:
- piezoelectric element means including at least two columnar-shaped piezoelectric elements having substantially the same resonance periods as one another, connected in series with one another;
- an elastic conductive member for applying a pressure to one of said piezoelectric elements;
- energizing means, connected electrically with a surface of one of said piezoelectric elements, for supplying said piezoelectric elements with a periodic electric signal having a frequency which is an inherent resonance frequency of said piezoelectric elements;
- and
- a capacitive load connected with a surface of the other of said piezoelectric elements.
Dependencies are inferred from the claim text.