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Passive over/under voltage control and protection for energy storage devices associated with energy harvesting

  • US 20090251099A1
  • Filed: 04/02/2009
  • Published: 10/08/2009
  • Est. Priority Date: 04/02/2008
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • at least one input charge device having a charge potential energy;

    at least one blocking circuit comprising an input terminal and an output terminal, said blocking circuit input terminal connected to said at least one input charge device;

    at least one energy storage device connected to said output terminal of said at least one blocking circuit, said at least one energy storage device having a voltage and a predetermined safe voltage level;

    at least one voltage monitor circuit comprising an input terminal, a reference terminal, and an output terminal, said first voltage monitor circuit input terminal being connected to said blocking circuit input terminal; and

    at least one power dissipation circuit adapted to be electrically connected to said at least one energy storage device when charge energy from said at least one input charge device exceeds the voltage in said at least one energy storage device and the voltage of said energy storage device exceeds a predetermined over-charge value.

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