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Electret film generator

  • US 8,076,825 B1
  • Filed: 07/14/2008
  • Issued: 12/13/2011
  • Est. Priority Date: 07/12/2007
  • Status: Expired due to Fees
First Claim
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1. A power generating shoe comprising:

  • a. a power generation section comprising a multiple layers of a electro-mechanical transducer material positioned in or on a shoe body;

    b. a rectifier connected to said electro-mechanical transducer material;

    c. a DC to DC converter connected to said rectifier, said converter comprising;

    i. a voltage input terminal and a voltage output terminal;

    ii. at least a first capacitor element and a second capacitor element, wherein said second capacitor element comprises a plurality of individual capacitors;

    iii. a switch network comprising;

    1) a first phase wherein said plurality of capacitors are in series to said first capacitor element and disconnected from said output terminal; and

    2) a second phase wherein said plurality of capacitors are in parallel with said output terminal and disconnected from said first capacitor element; and

    iv. a switch controller which switches to said second phase when a first voltage is created across said first capacitor element and which switches to said first phase when a second, lower voltage is created across said first capacitor element; and

    d. a power storage device connected to said converter.

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