Electromechanical energy harvesting system
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United States of America Patent
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Oct 4, 2011
Grant Date -
Mar 26, 2009
app pub date -
Dec 9, 2005
filing date -
Dec 9, 2005
priority date (Note) -
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Abstract
An ambient energy harvesting system, and method of use thereof, includes a magnetic flux-generating assembly (28), a coil (30) positioned adjacent to the magnetic flux-generating assembly (28), and a cantilevered arm (24). Vibration of the cantilevered arm (24) enables relative movement between the magnetic flux-generating assembly (28) and the coil (30) to generate an electric current in the coil (30). An effective flexible length (L) of the cantilevered arm (24) is selected such that applied kinetic energy causes the cantilevered arm (24) to vibrate at approximately its resonant frequency.
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