Patent ID: 7112911

Claim:
A vibrational power generation device vibrator comprising: first and second electrodes constituting a first capacitance; third and fourth electrodes constituting a second capacitance; a vibrator provided with said first and third electrodes; an electrode base provided with said second and fourth electrodes; a vibrator pedestal for fixing said vibrator onto said electrode base; and an electrode terminal respectively connected to said first to fourth electrodes and performing an input and output of electric charges from the exterior, wherein said vibrator includes a mass performing an undriven vibration and two oscillation plates for supporting said mass, wherein said oscillation plates sandwich and support a first surface of said mass and a second surface opposite thereto in a mutually parallel manner, and wherein said vibrator is operated through vibrational energy to change a capacitance by controlling a distance between said first and third electrodes and a distance between said second and fourth electrodes provided at said vibrator.