DEVICE FOR PIEZOELECTRIC DRIVE

摘要

PROBLEM TO BE SOLVED: To improve the efficiency of a device for piezoelectric drive having a two-mode piezoelectric resonator. SOLUTION: This device for piezoelectric drive having the first and second control electrodes 2 and 3 which trigger a piezoelectric resonator 1 in the first and second driving directions respectively and a trigger circuit 6 for supplying a control signal S to the electrodes 2, 3 is equipped with a adjustment circuit 7 for adjusting the control signal S. When the resonant circuit 1 is triggered in the first driving direction by the first control electrode 2, the second control electrode 3 supplies a feedback signal K to the adjustment circuit 7. When the resonator 1 is triggered in the second driving direction by the second control electrode 3, the first control electrode 2 supplies the feedback signal K to the adjustment circuit 7, and the control signal S is adjusted by an adjustment signal R from the adjustment circuit 7.