发明名称 |
Piezolectric-element drive apparatus |
摘要 |
A piezoelectric-element drive apparatus includes a direct-current power supply. An energy storing capacitor is connected in parallel with the direct-current power supply. An energy-transfer switching element becomes on when energy is transferred from the energy storing capacitor. A piezoelectric element connected in parallel with the energy storing capacitor receives energy and expands when the energy-transfer switching element becomes on. A discharging coil is connected in parallel with the piezoelectric element. A discharging switching element is operative for discharging the piezoelectric element via the discharging coil. A coupling transformer is provided between the energy storing capacitor and the piezoelectric element.
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申请公布号 |
US5543679(A) |
申请公布日期 |
1996.08.06 |
申请号 |
US19940298553 |
申请日期 |
1994.08.30 |
申请人 |
NIPPONDENSO CO., LTD.;TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
MORINO, SEIJI;HASHIMOTO, EIJI;TOMODA, TERUTOSHI |
分类号 |
F02M51/06;F02D41/20;H01L41/04;H01L41/09;H02N2/00;H02N2/06;(IPC1-7):H01L41/08 |
主分类号 |
F02M51/06 |
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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