Patent ID: 6690101
Filing Date: 2004-02-10
Classification: H01L

Abstract:
A piezoelectric driver apparatus for controlling the operation of a vibrating clement having a mechanical resonator, apparatus comprising:a vibrating element having an inherent capacitance; at least one switching element allowing the application of a predetermined signal; at least one electrical resonator driver circuit driving the vibrating element, wherein the driver circuit is electrically coupled to and activated by the switching element; at least one inductive coil electrically coupled to the vibrating element to form an electric resonator together with the capacitance of the vibrating element so the signal excites the driver circuit at a predetermined frequency, the coil being either mounted to the vibratory element or mounted to a common support with the vibratory element, wherein the vibrating element is a piezoelectric element driving a mechanical resonator and the coil encircles a portion of the piezoelectric element.