发明名称 |
Drive Circuits and Methods for Ultrasonic Piezoelectric Actuators |
摘要 |
A drive circuit for and method of driving a piezoelectric actuator utilizes an impedance coupled to the piezoelectric actuator, wherein the impedance and the piezoelectric actuator together form a tank circuit that has a resonant frequency. A first circuit is provided that drives the actuator at the resonant frequency and a second circuit is further provided that selectively operates the first circuit in one of at least two modes of operation including a first mode that causes the actuator to be energized at a first duty cycle and a second mode that causes the actuator to be energized at a second duty cycle.
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申请公布号 |
US2007046143(A1) |
申请公布日期 |
2007.03.01 |
申请号 |
US20060464419 |
申请日期 |
2006.08.14 |
申请人 |
BLANDINO THOMAS P;LUC TAI P;ZHOU PETER |
发明人 |
BLANDINO THOMAS P.;LUC TAI P.;ZHOU PETER |
分类号 |
H01L41/09 |
主分类号 |
H01L41/09 |
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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