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| Number | Title | Issue Date |
| 8084885 | System for paralleling power supplies A turbo compounding system may include a turbo generator having a switched reluctance machine having at least one pole-matched rotor and stator pair, a single phase inverter coupled to the turbo generator and further coupled to a direct current link, an inverter cou... | 12/27/2011 |
| 7777367 | Sequential shunt solar array controller A current controller for a spacecraft comprises ripple regulators and a pulse width modulated regulator. Ripple regulators receive current from associated current sources and pass current to or shunts current away from the bus. The pulse width modulated regulator re... | 08/17/2010 |
| 7355829 | Overvoltage protection circuit, and power source, power supply system and electronic apparatus using the overvoltage protection circuit In a redundant configuration with multiple power sources connected in parallel to enhance reliability, a power source in which an overvoltage failure occurred has been difficult to identify and unable to be deactivated, which has impeded the improvement of reliabili... | 04/08/2008 |
| 7312962 | Intelligent overcurrent protection for power supplies The present invention is a method and system for preventing an output of current greater than a desired amount for a redundant power supply system. In an embodiment of the present invention, redundant power supplies may be shut down when the sum of the output curren... | 12/25/2007 |
| 7301313 | Multiple voltage regulators for use with a single load Multiple voltage regulators for use with a single load. The present invention allows power to be supplied to an electrical load using multiple voltage regulators based on the operating environment of the load. In one embodiment, a primary voltage regulator that is b... | 11/27/2007 |
| 7295935 | Analyzing and/or displaying power consumption in redundant servers A method of analyzing power consumption in an information handling system is provided. A voltage associated with a current share signal may be determined. A power load associated with the information handling system may be determined based at least on the determined... | 11/13/2007 |
| 7276812 | Method and device for non-contact energy transmission A method and a device for non-contact energy transmission from one or more medium-frequency current sources, whose medium frequencies may have deviations around fM, to one or more moving consumers via one or more transmission lines and from or via transfo... | 10/02/2007 |
| 7230344 | Apparatus and method for transient and uninterruptible power In accordance with certain exemplary embodiments, the present technique provides methods and apparatus for providing transient and uninterrupted power to protected loads. As one example, the present invention provides an induction device that operates as an inductio... | 06/12/2007 |
| 7206944 | Electrical apparatus, computer, and power switching method An electrically powered apparatus having a system body obtains power from an AC adapter connected to the system body. The system body and AC adapter are powered from a commercial power source. A battery connected to the system body is charged, then discharged to pow... | 04/17/2007 |
| 7068014 | Online alternator flywheel system A flywheel energy storage system for preventing power interruptions to a load from interruptions of primary power includes a flywheel supported for rotation about an axis on a bearing system, and a motor-generator having a rotor coupled with the flywheel, and having... | 06/27/2006 |
| 7066050 | Life counter for flywheel energy storage systems A life counter that calculates and records the life utilized of the flywheel in a flywheel energy storage system and indicates when it should be removed from service, based on operational history instead of monitoring for symptoms of failure. The life counter can ef... | 06/27/2006 |
| 7023185 | Power supply for controlled parallel charging and discharging of batteries A power supply and switching technique is provided that utilizes a first battery and a second battery to charge a load. The power supply includes a first controlled power switch coupled to the first battery and the load, a second controlled power switch coupled to t... | 04/04/2006 |
| 6930408 | Circuit for the generation of electric power of opposite polarity in a pulsating power supply A circuit for generating electric power at the moment a D.C. pulsating power is suspended includes an induction device in series with or in parallel with the load for generating the power and supplying it to the load. ... | 08/16/2005 |
| 6849966 | Power supply for controlled parallel charging and discharging of batteries A power supply and switching technique is provided that utilizes a first battery and a second battery to charge a load. The power supply includes a first controlled power switch coupled to the first battery and the load, a second controlled power switch coupled to t... | 02/01/2005 |
| 6727602 | Power supply for controlled parallel charging and discharging of batteries A power supply and switching technique is provided that utilizes a first battery and a second battery to charge a load. The power supply includes a first controlled power switch coupled to the first battery and the load, a second controlled power switch coupled to t... | 04/27/2004 |
| 6605880 | Energy system providing continual electric power using wind generated electricity coupled with fuel driven electrical generators The process provides constant electric power from a combination of a wind energy generator and a firm secondary generator. The wind energy generator and the secondary generator supply electricity directly to a utility transmission system. The secondary ge... | 08/12/2003 |
| 6400102 | Non-linear light-emitting load current control A sensor circuit detects a current supplied to a set of light-emitting diodes and produces a current reading dependent on the temperature of .operation of these light-emitting diodes. The sensor circuit comprises first and second serially interconnected r... | 06/04/2002 |
| 6285139 | Non-linear light-emitting load current control A sensor circuit detects a current supplied to a set of light-emitting diodes and produces a current reading dependent on the temperature of operation of these light-emitting diodes. The sensor circuit comprises first and second serially interconnected re... | 09/04/2001 |
| 6166455 | Load current sharing and cascaded power supply modules A modular power supply which distributes responsibility for supplying current to a load among two or more power supply modules having a common output node. One of the power supply modules which supplies the lowest level of current to the load functions as... | 12/26/2000 |
| 6157555 | Current limiter responsive to changing parallel power supply capacity A system and method for adjusting the maximum allowable current limit for each of a plurality of parallel power supplies within an N+1 power supply system in response to dynamic variations in the total supply current capacity of the N+1 power supply syste... | 12/05/2000 |
| 6150803 | Dual input, single output power supply Regulator circuits and regulation techniques that provide sufficient power for a given load requirement even where no single power supply in the system is adequate to satisfy the given load requirement. Circuits and techniques according to the invention u... | 11/21/2000 |
| 6112157 | Constant-current regulator with redundant bus control A constant-current regulator regulates and monitors the current fed to one or more downstream loads. It also serves to even out the current fed to the downstream load or loads at the control level or when there is a change in the control level. In order t... | 08/29/2000 |
| 6091284 | Current control circuit A current control circuit is provided which is capable of maintaining a constant DC current flowing in a load resistor irrespective of the resistance value of a load resistor connected to a connection terminal. To this end, a constant current circuit (21)... | 07/18/2000 |
| 6054778 | Electronic steering wheel technique for passing information with a programmable current source and detector A steering wheel control system (10) that employs a method for passing push-button commands from a steering wheel to a vehicle system, wherein the method is not dependant upon the contact resistance of a sliding contact (32) located in the steering wheel ... | 04/25/2000 |
| 5932935 | Energy storage flywheel emergency power source and methods A flywheel energy conversion device provides highly efficient conversion between kinetic and electrical energy. The flywheel produces increased output by providing armature coils in an air gap formed about the flywheel (both radial and axial embodiments a... | 08/03/1999 |
| 5900724 | Method of splitting a power supply Parallel circuit of power supplies, the output voltage of each power supply, in the event of the nominal current being exceeded during simultaneous operation of all the power supplies, becoming less by a predetermined amount which is greater than the tole... | 05/04/1999 |
| 5878082 | Data communication device for implementing accurate data communication An ECU for executing serial communication via a transmission line has a driver circuit. The driver circuit includes an integrator for integrating a transmission signal and a power source for generating a current which corresponds to the integrated value o... | 03/02/1999 |
| 5814903 | Programmable gain for switched power control In the described embodiments, a spacecraft is powered by paralleled solar panels, which supply power to a load. The panels are ORed together, and each is controlled by a switched shunt, which provides coarse control of the load voltage. A control loop sen... | 09/29/1998 |
| 5576581 | Door control system and release mechanism Fire control systems and release mechanisms. The release mechanisms of the present invention comprise a digital logic circuit for processing signals which are indicative of a condition in an outside environment, and for providing a trigger that will actua... | 11/19/1996 |
| 5553294 | Portable computer powered by rechargeable batteries When a computer is not externally powered, it operates from installed first and second batteries. In top surface of the computer, LEDs are provided which indicates three states of each battery; need of charging, during charging, and completion of charging... | 09/03/1996 |
| 5245218 | Electric circuit for stabilizing the transfer impedance of an integrated circuit A system for regulating the transfer impedance of a plurality of current-to-voltage converters to a substantially equal value includes a reference voltage source and a reference impedance for providing a reference current. A reference current-to-voltage c... | 09/14/1993 |
| 5200643 | Parallel electric power supplies with current sharing and redundancy An electric power system having power supplies connected in parallel to a common bus includes a voltage feedback and current feedback loop for each supply. A voltage feedback signal and a current feedback signal are combined with a reference signal to pro... | 04/06/1993 |
| 5148042 | Small electronic device capable of switching batteries by releasing a battery locking mechanism A small electronic device includes first and second locking devices which releasably lock the batteries on a first and second mounting portions, first and second detectors which respectively detect that the locked conditions of first and second locking de... | 09/15/1992 |
| 5057719 | Passively forced current sharing among transistors This application concerns a simple passive circuit that improves current balance in paralleled power MOSFETs that are not precisely matched and that are operated in their active region from a common gate drive. A nonlinear circuit consisting of diodes and... | 10/15/1991 |
| 4866295 | Power supply control systems A power supply control system controls at least two variable power supplies feeding a common load connected to a common output terminal. A sensor monitors the current drawn by each power supply in dependence upon the difference detected in a sense to redu... | 09/12/1989 |
| 4788452 | Switchable DC power supply with increased efficiency for use in large wattage amplifiers A switch connected between two voltage sources and responsive to a sensing circuit. The switch includes a transistor which operates to interchange the electrical connection of the two voltage sources from parallel to series upon the sensing circuit signal... | 11/29/1988 |
| 4748340 | Load share system A load share system which connects to the power outputs of two power supplies to determine any deviation of the output currents relative to each other and provides a correction signal representative of the deviation. The system generates two balance signa... | 05/31/1988 |
| 4618779 | System for parallel power supplies A system and method of connecting power supplies in parallel that provides desired voltage regulation at the load and current sharing between the power supplies. The power supplies are connected in parallel at the load. Each power supply also has a sense ... | 10/21/1986 |
| 4567541 | Electric power source for use in electrostatic precipitator An electric power source for use in an electrostatic precipitator includes a first high voltage DC source having an output terminal adapted to be connected to discharge electrodes of the electrostatic precipitator. An inductor is connected at its one end ... | 01/28/1986 |
| 4539486 | Single-core inductor generator for welding producing multiple, mutually-independent outputs An inductor generator for welding in which: a plurality of generator elements are combined and incorporated in a single generator and respectively provided with excitation windings to render the generator elements self excitable; a constant-current contro... | 09/03/1985 |
