Drive circuit for piezo ceramic device
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United States of America Patent
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Issued Date -
Apr 13, 2006
app pub date -
Apr 15, 2003
filing date -
Apr 15, 2002
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A control circuit for controlling the operation of a piezo ceramic actuator comprising means for applying a voltage to the piezo ceramic actuator, the means arranged such that a linear charge is applied to the piezo ceramic device (10) which in turn produces a linear displacement of the piezo ceramic device. The control circuit preferably comprises four transistor switches (20) in H-bridge configuration.
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