Piezoelectric actuator employing switch
US8373330B2 · kind B2 · utility
1Cited by
9References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 12, 2010 |
| Grant date | Feb 12, 2013 |
| Priority date | — |
| Expiry date | Feb 12, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/067
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
One embodiment of the present invention features a circuit for driving a piezoelectric actuator, comprising a first transmission line to provide an input signal having a time-varying voltage; a second transmission line to provide a predetermined voltage current; a piezoelectric element; and a switch coupled to the second transmission line and the piezoelectric element, the switch configured to electrically connect and disconnect the predetermined voltage current to and from the piezoelectric element based on the input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.