Title:
DRIVING CIRCUIT FOR PIEZOELECTRIC/ELECTROSTRICTION ELEMENT
Document Type and Number:
Japanese Patent JP3506057
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a driving circuit for piezoelectric element with which power collection efficiency is improved, namely, power consumption is reduced, the degree of freedom in charging/discharging timing is improved as well and further, a capacitor for power collection is not required.
SOLUTION: First and second piezoelectric/electrostrictive elements 1 and 2 are provided with first and third charging circuits 3 and 5 as the charging circuits of a first stage and provided with second and fourth charging circuits 4 and 6 as the charging circuits of the next stage. Besides, the both of the charging circuits 3 and 5 of the first stage are also used as the discharging circuits of the first stage and first and second discharging circuits 8 and 9 are provided as the discharging circuits of the next stage. Then, concerning the first and third charging circuits 3 and 5, coils L1 and L2 are interposed serially to the piezoelectric/electrostriction elements 1 and 2 in addition to resistors R1 and R2.
Inventors:
Yukihisa Takeuchi
Iwao Owada
Iwao Owada
Application Number:
JP23444799A
Publication Date:
March 15, 2004
Filing Date:
August 20, 1999
Export Citation:
Assignee:
Nippon Insulator Co., Ltd.
International Classes:
B06B1/06; G05F1/618; H01L41/04; H01L41/09; H02N2/00; H02N2/06; (IPC1-7): H02N2/00; B06B1/06; G05F1/618; H01L41/09
Domestic Patent References:
| JP439060A | ||||
| JP5206537A | ||||
| JP63130357A | ||||
| JP471858A | ||||
| JP63176384U | ||||
| JP442848B2 |
Attorney, Agent or Firm:
Yoshiki Ishida
Previous Patent: JPH03506056
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