 Circuit arrangement for supplying a load |
| It is an object of the invention to provide a circuit arrangement which with simple means ensures ... |
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| High voltage start-up circuit and method therefor |
| In accordance with one embodiment of the present invention, it is an object of this invention to ... |
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| Power factor corrected electrical power converter |
| Broadly stated, the present invention encompasses a power factor corrected electrical power ... |
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| Detection of DC content in an AC waveform |
| According to the present invention, the DC content of an AC waveform is determined by measuring and ... |
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| Apparatus for correcting DC component of output voltage in inverter |
| An object of the invention is to provide apparatus for correcting the DC component of the output ... |
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| DC content control for an inverter |
| In accordance with the present invention, a control for an inverter controls DC content in the ... |
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| Switching power supply with foldback current limiting |
| What is claimed is: 1. In a switching power supply, apparatus comprising in combination: a ... |
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| Computer-controlled synthetic waveform generator |
| FIG. 1 is a schematic diagram of an energy conversion system according to the present invention. A... |
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| Inverter for converting a direct voltage into an alternating voltage |
| It is an object of the invention to provide an inverter which, using minimum circuitry, is able to ... |
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Non woven gel electrolyte for electrochemical cells
| Details |
Inventors: Gies, Paul J.; Oliver, Manuel; Eschbach, Florence O.; Reichert, Veronica R.; Coalson, Christen E.;
Assignee: Motorola, Inc., (Schaumburg, IL)
Primary Examiner: Diamond; Alan
Assistant Examiner:
Attorney, Agent or Firm: Massaroni; Ken
An electrolyte system (40) for use in connection with an electrochemical cell (10). The cell (10) includes a positive electrode (20) and a negative electrode (30) with the electrolyte system (40) disposed therebetween. The electrolyte system is a polymer gel electrolyte system including a liquid electrolyte species which may be either aqueous or non-aqueous and a polymer gel electrolyte support structure. The polymer gel electrolyte support structure includes at least an non woven first polymer and a second polymer which is adapted to absorb the electrolyte active species. The first polymer is a fibrous polymer to reduce swelling of the gel electrolyte in the presence of the electrolyte active species, and further to enhance mechanical integrity of the support structure. |
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DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT While the specification concludes with claims defining the features of the invention that are regarded as novel, it is believed that the invention will be better understood from a consideration of the following description in conjunction with the drawing figures, in which like reference numerals are carried forward.
Referring now to FIG.
1, there is illustrated therein a schematic representation of an electrochemical cell in accordance with the instant invention.
The cell 10 includes a positive electrode 20 and a negative electrode 30.
The positive electrode 20 may be fabricated of any of a number of chemical systems known to those of ordinary skill in the art.
Examples of such systems include manganese oxide, nickel oxide, cobalt oxide, vanadium oxide, and combinations thereof.
In one preferred embodiment, the positive electrode is fabricated of a lithiated nickel oxide material such as that disclosed in commonly assigned, co-pending U.
S.
patent application Ser.
No.
08/464,440 in the name of Zhenhua Mao filed Jun.
5, 1995, the disclosure of which is incorporated herein by reference.
The negative electrode 30 may likewise be fabricated from any of a number of electrode materials known to those of ordinary skill in the art.
Selection of the negative electrode material is dependent on the selection of the positive electrode so as to assure an electrochemical cell which will function properly for a given application.
In this context, the negative electrode may be fabricated from alkali metals, alkali metal alloys, carbon, graphite, petroleum coke, and combinations thereof.
The types of negative and positive electrode materials recited above are typically associated with lithium battery cells.
In one preferred embodiment, the negative electrode is fabricated of an activated carbon material such as that disclosed in commonly assigned, co-pending U.
S.
patent application Ser.
No.
08/561,641 entitled "Improved Carbon Electrode Materials For Lithium Battery Cells And Method of Making Same" filed on Nov
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Fuel Cells 
