| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a driving device for a piezoelectric element that can cause an output voltage to follow a control voltage during discharge. <P>SOLUTION: A charge circuit 11 charges a piezoelectric element 50 through a first node N2. A discharge circuit 16 discharges electric charges charged in the piezoelectric element 50 through the first node N2. A control circuit 83 changes whether to cause the discharge circuit 16 to perform a discharge operation or to cause the charge circuit 11 to perform a charge operation based on the comparison of the magnitude of a voltage applied to the piezoelectric element 50 and the magnitude of a control voltage. <P>COPYRIGHT: (C)2012,JPO&INPIT |
