发明名称 |
DRIVER FOR PIEZOELECTRIC ACTUATORS |
摘要 |
To provide a driver for driving piezoelectric actuators with drastically reduced drive currents during on/off switch control, thereby reducing the power consumption of an overall device. Each of the plural piezoelectric actuators 1a to 1h is composed of a plate and piezoelectric sheets attached to the opposed surfaces of the plate. A positive feeder line 19 or a negative feeder line 21 is connected to the opposite side of each piezoelectric sheet to the side attached to the plate. The controller 27 on-controls the piezoelectric sheets of each of the piezoelectric actuators 1a to 1h by selectively applying a positive or negative drive voltage thereto. Thereafter, the controller 27 turns off the drive voltage applied to the piezoelectric sheets subjected to on-control and simultaneously with this, turns on a drive voltage to the piezoelectric sheets of any other one the piezoelectric electric actuators 1a to 1h to be driven next. <IMAGE> |
申请公布号 |
EP1575157(B1) |
申请公布日期 |
2008.10.08 |
申请号 |
EP20030778796 |
申请日期 |
2003.12.11 |
申请人 |
WAC DATA SERVICE KABUSHIKI KAISHA;CDK CO., LTD. |
发明人 |
WATANABE, KAZUHISA;ENOMOTO, SATOSHI;ENOMOTO, HIROSHI;KANAI, SHIGERU;TAKANE, TOSHIAKI |
分类号 |
H01L41/04;H01L41/09;H02N2/06 |
主分类号 |
H01L41/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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