Power supply control circuit that adjusts output power based on variable input power
First, in accordance with the present invention, a power supply can attain a maximum output while preventing damage to an external power supply even when the external power supply needs to provide var... Read More
Inventors: Nakazawa, Shigeaki; Yano, Hidetoshi; Ozawa, Hidekiyo; Saeki, Mitsuo; Matsuda, Kouichi; Tanaka, Shigeo;, Assignee: Fujitsu Limited (Kawasaki, JP) |
Bus voltage control using gated fixed energy pulses
OF THE INVENTION Referring to FIG. 1A, a functional block diagram is illustrated of a power bus controller or regulator in accordance with one embodiment of the invention. The bus shown at 10 has cap... Read More
Inventors: Travaglini, Dominick F.; Linkowsky, Frank A.; Bingley, John D.;, Assignee: Lockheed Martin Corporation (Bethesda, MD) |
Single wire radio to charger communications method
This invention is a method by which the charging status of a battery can be transmitted from a microprocessor in a phone or radio to a charger across a single wire interface. The communication is acco... Read More
Inventors: Patino, Joseph; Coapstick, Ronald; Desai, Vijaykumar D.;, Assignee: Motorola, Inc. (Schaumburg, IL) |
Line-powered, phase-control circuit
We claim: 1. A line-powered power supply circuit, comprising: a source of an AC, mains supply voltage; an inductance; a rectifier coupled to said mains source for rectifying said mains supply voltage ... Read More
Inventors: Rilly, Gerard; Morizot, Gerhard;, Assignee: Deutsche Thomson-Brandt GmbH (Villingen-Schwenningen, DE) |
Self-compensating switching power converter
. The invention provides self-compensating resonant switching high voltage power converters which solve the foregoing and other problems of known high voltage power supplies. The power converters of t... Read More
Inventors: Hanington, Gary J.;, Assignee: |
Uninterruptible power supply with AC and DC power inputs
It is an object of the present invention to overcome or at least mitigate the disadvantages of known uninterruptible power supplies. It is a second object of the present invention to provide an uninte... Read More
Inventors: Lavin, James Vincent; Glachan, Neil;, Assignee: Magnum Power Solutions Limited (Livingston, GB6) |
Position control using variable exciter feed through
We claim: 1. A motor generator system comprising: a prime mover for driving an output shaft; a main motor generator, having a rotor driven by the output shaft, for producing electrical power on a plur... Read More
Inventors: Hanson, Michael J.; Rozman, Gregory I.;, Assignee: Sundstrand Corporation (Rockford, IL) |
Control circuit and method for maintaining high efficiency over broad current ranges in a switching regulator circuit
It is therefore an object of the present invention to provide a high efficiency switching regulator. It is also an object of the present invention to provide a control circuit and method for maintaini... Read More
Inventors: Wilcox, Milton E.; Flatness, Randy G.;, Assignee: Linear Technology Corporation (Milpitas, CA) |
Switch drive controller, method of operation thereof and power converter employing the same
To overcome the deficiencies of the prior art, the present invention provides, for use with a power converter coupled to a regulation circuit and having a power switch and an auxiliary switch coupled ... Read More
Inventors: Liu, Rui;, Assignee: Lucent Technologies Inc. (Murray Hill, NJ) |
Power factor corrector
The present invention is directed to a device that reduces harmonics at low cost and high efficiency. Accordingly, a power factor corrector has a power stage and a controller that to is electrically c... Read More
Inventors: Josephs, Louis C.; Kent, Robert A.;, Assignee: Power-One (Camarillo, CA) |
Circuit and device for protecting secondary battery
I claim: 1. A battery protective circuit incorporated in a rechargeable battery, comprising: a charge/discharge circuit including: a first switching means for protecting the rechargeable battery from ... Read More
Inventors: Iwaizono, Yoshinori;, Assignee: Matsushita Electric Industrial Co., Ltd. (Osaka, JP) |
Method and apparatus for controlling power supply
Accordingly, an object of the present invention is to provide a method and apparatus for controlling power supply. According to one aspect of the present invention, there is provided a power supply co... Read More
Inventors: Ninomiya, Ryozi;, Assignee: Kabushiki Kaisha Toshiba (Kawasaki, JP) |
Charging method for a battery assembly including a plurality of secondary batteries
It is an object of the present invention to provide an improved method of charging a secondary battery assembly which avoids overcharging the normal secondary batteries if one of the batteries malfunc... Read More
Inventors: Kokuga, Toshiharu;, Assignee: Sanyo Electric Co., Ltd. (Osaka, JP) |
Battery charging methods and apparatuses
Those skilled in the art will readily appreciate that the present invention is applicable to any and all devices which use batteries that are rechargeable, including, for example, mobile phones and p... Read More
Inventors: Banyas, Timothy; Frannhagen, Bjorn;, Assignee: Ericsson Inc. (Research Triangle Park, NC) |
Battery monitoring
The invention provides a method enabling the voltage course of a battery to be estimated during discharge without prior knowledge of the parameters of the battery. This is achieved by the method of th... Read More
Inventors: Szlenski, Marek;, Assignee: Nokia Mobile Phones Limited (Espoo, FI) |
Lithium cell recharging
We claim: 1. A method of recharging a rechargeable battery comprising a plurality of lithium cells in series, said cells having a design voltage and the method comprising recharging the battery at a c... Read More
Inventors: Stephenson, Andrew David Hamilton; Palmore, Sean Francis;, Assignee: AEA Technology (Ora, GB) |
Controller for DC-DC converter
Accordingly, it is an object of the present invention to provide a method and circuit for controlling a DC--DC converter that can fully utilize the capacity of the AC adapter without increasing cost. ... Read More
Inventors: Takimoto, Kyuichi; Matsuyama, Toshiyuki; Ozawa, Hidekiyo; Kitagawa, Seiya;, Assignee: Fujitsu Limited (Kawasaki, JP) |
Voltage cutoff compensation method for a battery in a charger
OF THE PREFERRED EMBODIMENTS The Rc contact of FIG. 1 provides a voltage indicating the number of battery cells, the battery chemistry and the charge rate of a battery inserted in a charger. The batt... Read More
Inventors: Patino, Joseph;, Assignee: Motorola, Inc. (Schaumburg, IL) |
Apparatus and method of monitoring battery temperature during charging
OF THE INVENTION Referring now to the drawing in detail, wherein identical numerals indicate the same elements throughout the figures, FIG. 1 depicts a handheld mobile telephone 10 received by a batt... Read More
Inventors: Wakefield, Ivan Nelson;, Assignee: Ericsson Inc. (Research Triangle Park, NC) |
Serial communication interface system having programmable microcontroller for use in a battery pack
OF THE PREFERRED EMBODIMENT System Overview Referring to FIG. 1, a detailed block diagram illustrating microcontroller integrated circuit 10 embodying the present invention is shown. Microcontroller ... Read More
Inventors: Nolan, James B.; Dellacroce, Brian;, Assignee: Microchip Technology Incorporated (Chandler, AZ) |
Battery monitoring circuit with storage of charge and discharge accumulation values accessible therefrom
The present invention disclosed and claimed herein comprises a battery monitoring circuit for monitoring select parameters of a battery having positive and negative terminals. The battery monitoring c... Read More
Inventors: Alwardi, Milad; Matthews, Wallace Edward; Heacock, Dave; Freeman, David Louis;, Assignee: Benchmarq Microelectronics (Dallas, TX) |
Circuit for determining the remaining operating life of a system
The present invention overcomes the above identified problems as well as other shortcomings and deficiencies of existing technologies by providing oscillator driven gas gauge circuitry used to accurat... Read More
Inventors: Ezell, Richard William; Douglass, James M.;, Assignee: Dallas Semiconductor (Dallas, TX) |
Method for monitoring operating parameters of a rechargeable power supply
The present invention overcomes the above identified problems as well as other shortcomings and deficiencies of existing technologies by providing a method for monitoring the temperature of the rechar... Read More
Inventors: Downs, Richard E.; Ezell, Richard William; Douglass, James M.;, Assignee: Dallas Semiconductor Corporation (Dallas, TX) |
Anti-islanding method and apparatus for distributed power generation
I claim: 1. A system for controlling power supplied to a utility network, comprising: a detector to detect a characteristic of power on a grid line of the utility network; an accelerator to provide an... Read More
Inventors: Wills, Robert H.;, Assignee: Plug Power, Inc. (Latham, NY) |
Interface device receivable in card storage device slot of host computer
The present invention has been made to solve the above-described problems, and a first object of the present invention is to provide an interface device which enables an FDD to be connected to a card ... Read More
Inventors: Okada, Toru; Kurihara, Hitoshi; Negishi, Ryuichi; Kakinuma, Kiyoyuki;, Assignee: Canon Denshi Kabushiki Kaisha (Saitama-ken, JP) |
Method and system for controlling and monitoring an array of point-of-load regulators
The present invention provides a system and method for controlling and monitoring POL regulators within a distributed power system. In an embodiment of the invention, the power control system comprise... Read More
Inventors: Chapuis, Alain; Guz, Mikhail;, Assignee: Power-One, Inc. (Camarillo, CA) |
Electronic circuit arrangement having polarity reversal protection
In addition to reliable polarity reversal protection, the solution according to the invention affords, in particular, the advantage of a small voltage drop across the component which is provided for t... Read More
Inventors: Mattes, Bernhard; Henne, Ralf; Saufferer, Bernd;, Assignee: Autoliv ASP, Inc. (Ogden, UT) |
Circuit for electrostatic discharge (ESD) protection
OF THE INVENTION FIG. 1 depicts a partial block diagram, partial schematic diagram of an input/output (I/O) driver circuit 10 constructed according to the present invention. I/O driver circuit 10 inc... Read More
Inventors: Smith, Jeremy C.; Jamison, Stephen G.;, Assignee: Motorola, Inc. (Schaumburg, IL) |
Tire deflation mechanism
OF THE DRAWINGS (FIGS. 1 AND 2) FIGS. 1 and 2 show a manually operated tire deflator mechanism that includes a housing structure 10 having a cylindrical cavity 11 adapted to fit onto the threaded are... Read More
Inventors: Kleeman, Eugene;, Assignee: |
Battery pack and electronic apparatus using the same
Accordingly, an object of the present invention is to provide a high-safety battery pack at low cost, and to provide an electronic apparatus, such as a portable information terminal, using such a batt... Read More
Inventors: Hibi, Michio;, Assignee: Fujitsu Limited (Kawasaki, JP) |
Electrical and Wave 
