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US 8,076,825 B1Granted
Electret film generator
AssigneeLouisiana Tech University Foundation, Inc.
InventorVille Kaajakari
Life of this patent
Estimating the term…
Abstract
A DC generation and storage device including a power generation section with multiple layers of an electret film. A rectifier is connected to the electret film, which in turn will be connected to a DC to DC converter. A power storage device (e.g., a battery or capacitor) will be connected to the converter.
Claims20
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.
10 more elements
A DC to DC converter circuit comprising:
- a. a voltage input terminal and a voltage output terminal;
- b. at least a first capacitor element and a second capacitor element, wherein said second capacitor element comprises a plurality of individual capacitors;
- c. a switch network comprising:
- i. a first phase wherein said plurality of capacitors are in series to said first capacitor element and disconnected from said output terminal;
- and
- ii. a second phase wherein said plurality of capacitors are in parallel with said output terminal and disconnected from said first capacitor element;
- and
- d. 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.
5 more elements
A DC to DC converter circuit comprising:
- a. a voltage input terminal and a voltage output terminal;
- b. at least a first capacitor element and a second capacitor element, wherein said second capacitor element comprises a plurality of individual capacitors;
- c. a switch network comprising:
- i. a first phase wherein said plurality of capacitors are in series to said first capacitor element and disconnected from said output terminal;
- and
- ii. a second phase wherein said plurality of capacitors are in parallel with said output terminal and disconnected from said first capacitor element;
- and
- d. 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
- e. wherein diodes are positioned between said individual capacitors in said second capacitor element such that said individual capacitors may be switched between said parallel phase and said series phase.
7 more elements
Dependencies are inferred from the claim text.