Power generation apparatus
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United States of America Patent
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Mar 15, 2016
Grant Date -
Aug 21, 2014
app pub date -
Apr 23, 2014
filing date -
Sep 15, 2009
priority date (Note) -
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Abstract
A power generation apparatus includes a dielectric, a movable member being opposed to the dielectric with a predetermined distance, and an electret and an opposing electrode that are formed on the surface of the movable member facing the dielectric so as to generate a fringe electric field penetrating the dielectric between the two electrodes. When the volume occupancy of the dielectric between the electret and the opposing electrode varies in accordance with a displacement of the movable member, the power generation apparatus outputs the electric charge induced in the opposing electrode as electric current.
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