Energy-harvesting apparatus with plural mechanical amplifiers
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United States of America Patent
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Jan 16, 2018
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app pub date -
May 24, 2013
filing date -
May 25, 2012
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Abstract
An energy harvester is provided for harvesting energy, and in particular electrical energy from an input vibration such as an ambient vibration. The energy harvester comprises a first mechanical amplifier responsive to the input vibration and a second mechanical amplifier coupled to the first mechanical amplifier. At least one of the first and second mechanical amplifiers comprises a parametric resonator, and a power output of the energy harvester is generated by damping the second mechanical amplifier.
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