Patent ID: 11959559
Assignee: MECHANO TRANSFORMER CORPORATION
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  H | IPC F  H

Claim 12:
13. The valve control device according to claim 12, wherein the switching circuit comprises:
a charge current limiting circuit connected to the DC power supply, for charging the piezoelectric element with a current, and for limiting the charge current; and
a discharge current limiting circuit for discharging a current from the piezoelectric element and for limiting the discharge current, wherein:
the charge current limiting circuit receives, as control inputs, input of a charge operation command signal for demanding a current charge from the DC power supply to the piezoelectric element, and of a charge current limit value command voltage indicative of a limit value of current flowing into the piezoelectric element; and
the discharge current limiting circuit receives input, as control inputs, of a discharge operation command signal for demanding a current discharge from the piezoelectric element, and of a discharge current limit value command voltage indicative of a limit value of current flowing out from the piezoelectric element.