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| Number | Title | Issue Date |
| 8049368 | Load driving circuit and load driving method A load driving circuit that generates a desired voltage waveform to drive a load includes a target voltage waveform output section that outputs a target voltage waveform to be applied to the load. Power supply sections generate electrical power with voltage values d... | 11/01/2011 |
| 7759823 | Switching device To provide a switching device capable of a switch-controlling a voltage source regardless of voltage changes in the voltage source to be switched and the voltage source employed for switch control. A switching path 61 includes, between the input termin... | 07/20/2010 |
| 7418314 | Methods and apparatus for providing and distributing standby power Aspects of the invention are directed to power distribution systems and methods for distributing power from a primary power source and a backup power source to a load. In one particular aspect, a power distribution system includes a first input to receive input powe... | 08/26/2008 |
| 7365964 | Modular power distribution unit, module for the power distribution unit, and method of using the same A modular power distribution unit (PDU) for supplying electric power to attached equipment in environments such as data centers, computer rooms, and communication centers, where power requirements for attached equipment may vary. The power distribution unit includes... | 04/29/2008 |
| 7362009 | Chain reaction control circuit for parallel power supply A chain reaction control circuit for parallel power supply provides greater power without changing the design of the original power supply structure. It includes a control unit to receive a first power actuation signal output from a power actuation unit, then output... | 04/22/2008 |
| 7325050 | System and method for strategic power reduction in a computer system A system and method are provided for strategic power reduction in a computer system. The system and method includes a plurality of processing resources that process data. Associated with the processing resources are a plurality of power supplies that provide power f... | 01/29/2008 |
| 7315096 | Voltage regulator circuit for blade server The present invention is to provide a voltage regulator circuit disposed on a circuit board of a blade server including a voltage regulator module for converting voltage of a power source and outputting the power source and a switch unit being connected with the vol... | 01/01/2008 |
| 7274974 | Independent automatic shedding branch circuit breaker An independent automatic shedding system that automatically allows any combination of loads to powered under limited power availability (such as a standby power source) without overloading the generator or rewiring, while contributing to the stability of the power g... | 09/25/2007 |
| RE39710 | System for providing assured power to a critical load A power system (8) is provided for economically supplying uninterrupted electrical power to one or more critical loads (14). One or more fuel cell power plants (18) provide one substantially continuous source of power, and a utility grid (10 | 07/03/2007 |
| 7230820 | Distributor means for connecting electrical apparatus with a plurality of voltage sources A distributor is provided for selectively connecting with a plurality of voltage sources a plurality of electrical load devices, such as the sensors or actuators of an electrical and mechanical installation. A pair of voltage supply connectors mounted on a housing i... | 06/12/2007 |
| 7218507 | Distributor means for connecting electrical apparatus with a lighting device A distributor is provided for selectively connecting with a voltage source a plurality of electrical load devices, such as the sensors or actuators of an electrical and mechanical installation, characterized by the provision of an illuminating field that illuminates... | 05/15/2007 |
| 7215535 | Modular power distribution system for use in computer equipment racks A modular power distribution system is provided for distributing power within an equipment rack. One particular power distribution system has a control unit that is mounted proximate a rack including a power input for receiving power from a power source located outs... | 05/08/2007 |
| 7202576 | Uninterruptible power supply systems and enclosures One embodiment of the invention provides a UPS including a precharge circuit and a battery pack sensor electrically coupled to the precharge circuit. The sensor senses the presence of an extra battery pack. The precharge circuit includes: a first precharge contact; ... | 04/10/2007 |
| 7183669 | Power and/or energy monitor, method of using, and display device There are provided monitors which sense a magnitude of power (and/or energy) being consumed by a facility and which sense a magnitude of power (and/or energy) being produced by at least one energy-producing system. There are provided facilities comprising at least o... | 02/27/2007 |
| 7170197 | Switching power supply controller with built-in supply switching The invention provides a switching converter comprising as few as two high-side switching transistors and a low-side rectifying device, along with a control circuit. The switching converter is capable of operating from a main supply source or an auxiliary supply sou... | 01/30/2007 |
| 7155320 | Distributed power delivery system A method for supplying power includes supplying power to at least one critical device, supplying power to at least one essential device, and remotely removing power to the essential device while maintaining power to the critical device. ... | 12/26/2006 |
| 7150407 | System for interchanging data between at least two contactless data storage media System for interchanging data between at least two contactless data storage media, particularly contactless chip cards, wherein at least one of the contactless data storage media controls the data interchange as a master, and the at least one other data storage medi... | 12/19/2006 |
| 7142950 | Methods and apparatus for providing and distributing standby power Aspects of the invention are directed to power distribution systems and methods for distributing power from a primary power source and a backup power source to a load. In one particular aspect, a power distribution system includes a first input to receive input powe... | 11/28/2006 |
| 7141892 | Power supply method of a line interactive UPS and the line interactive UPS A power supply method and apparatus of a line interactive UPS utilizes a bi-directional AC/AC power converter in association with the AC delta control concept. When the line voltage coupled to the AC/AC power convert exceeds high/low statuses, the UPS is operated in... | 11/28/2006 |
| 7133852 | Electricity generation equipment management system A generator unit is installed locally to supply power to an electricity consumer. A management center monitors operation status of the generator unit and monitors the amount of electricity supplied to the electricity consumer by the generator unit. A service company... | 11/07/2006 |
| 7129599 | Dual feed power supply systems with enhanced power quality Dual feed power supply system provides high reliability of a dual utility feed, with minimal interruptions in power supplied to critical loads during switching, and compensation for voltage sags occurring on the primary power feed. AC input buses are connected throu... | 10/31/2006 |
| 7116550 | Electrical circuit apparatus with fuse access section An electrical apparatus has an elongated housing with fuses located therein. Windows are provided in the housing to close apertures in registration with fuse locations to allow access to fuses by removing the window. Fuses may be carried on a circuit card removably ... | 10/03/2006 |
| 7081827 | Power over Ethernet-prioritized active splitter A POE (power over Ethernet)-prioritized active splitter is disclosed for a prioritized network having different priorities such as a network security system that uses an intelligent POE power supply with a prioritized back-up response, allowing a lower cost UPS (uni... | 07/25/2006 |
| 7076674 | Portable computer having dual clock mode The present invention provides a portable computer. In one aspect, the portable computer has a first power mode and a second power mode. The portable computer includes a memory bus and a control system coupled to the memory bus. The control system is configured to o... | 07/11/2006 |
| 7057309 | Electrical apparatus, computer, power switching unit, and power switching method An electrical apparatus including an AC adapter 51; a battery 52 that repeats charging and discharging to power the apparatus; an AC/DC enable circuit 61 that switches between stop and start of power source from the AC adapter 51 to the b... | 06/06/2006 |
| 7030771 | System and method to provide hot-swap status indication in a computer system having redundant power supplies A system and method for providing hot-swap status indication in a computer system having redundant power supplies. In one embodiment a system comprises an electrical subsystem that is powered by a first power supply and second power supply. The system further compri... | 04/18/2006 |
| 7019416 | Power source circuit, electronic device being equipped with same power source circuit and control method of power source circuit A power source circuit capable of improving an efficiency of using energy of a chemical battery cell by responding suitably to an intermittent change in a load current, by during a load burst period in an odd-numbered order, a load is driven by power accumulated in ... | 03/28/2006 |
| 7010437 | Electric utility storm outage management Electric utility storm outage management is performed by determining an interconnection model of an electric utility power circuit, the power circuit comprising power circuit components, determining information indicative of weather susceptibility of the power circu... | 03/07/2006 |
| 6937461 | Modular power distribution unit, module for the power distribution unit, and method of using the same A modular power distribution unit (PDU) for supplying electric power to attached equipment in environments such as data centers, computer rooms, and communication centers, where power requirements for attached equipment may vary. The power distribution unit includes... | 08/30/2005 |
| 6909659 | Zero power chip standby mode A zero power standby mode in a memory device used in a system, such as a battery powered hand held device. By disconnecting the internal power supply bus on the memory device from the external power supply during standby mode, the junction leakage and gate induced d... | 06/21/2005 |
| 6864600 | Apparatus and method for providing multiple power supply voltages to an integrated circuit There is disclosed an apparatus and method for providing multiple power supply voltages to an integrated circuit. In an integrated circuit of the type comprising at least two power supply domains in which each power supply domain comprises at least one module powere... | 03/08/2005 |
| 6825578 | State machine controlled automatic transfer switch system An automatic transfer switch system controls switching of power from a main source (utility power) to a backup source (generator) by using a state machine controller and low cost relay switches housed in a single electrical panel. The low power automated transfer sw... | 11/30/2004 |
| 6664654 | System and method for dual mode control of a turbogenerator/motor A method of controlling a permanent magnet turbogenerator/motor includes providing a protected load connected in parallel with the turbogenerator/motor through a pulse width modulated inverter configured in a first operating mode to supply controlled curr... | 12/16/2003 |
| 6639331 | Parallel generator power system A system for connecting one of a plurality of parallel connected generator sets to a common bus. The system includes a separate module associated with each of the plurality of generator sets. When a control module receives a ready-to-load signal from the ... | 10/28/2003 |
| 6630752 | Uninterruptible transfer switch An uninterruptible transfer switch (UTS) coupled to two or more power sources and a load, said UTS including switches and an inverter, powered through one of several sources routed through rectifiers, capable of sensing power quality of two or more power ... | 10/07/2003 |
| 6605878 | Power failure transfer switching system A power failure transfer switching system for monitoring incoming line voltages and switching to auxiliary sources as required. The power failure transfer switching system includes a voltage monitoring assembly designed for monitoring the levels of an inc... | 08/12/2003 |
| 6600238 | Redundancy and component failure detection within a switching power system A redundant power system that includes switch array and component failure detection circuitry is disclosed. The redundant power system includes a plurality of available AC power lines, one of which is coupled to a load through the switch array. A controll... | 07/29/2003 |
| 6583521 | Energy management system which includes on-site energy supply An energy management system includes one or more electric power generators located at or near a consumer's premises, to provide power which is dedicated to the needs of that consumer. The power provided by the on-site generators complements that which is ... | 06/24/2003 |
| 6570269 | Method and apparatus for supplying power to a load circuit from alternate electric power sources An apparatus and method for supplying power to a load circuit from main and alternate electric power sources involves actuating a signal-controlled selector inside a housing, at least a portion of which is received in a breaker receptacle of an electric p... | 05/27/2003 |
| 6507130 | Data carrier with protection against spy out In a data carrier with a data processing device in which there is provided an external as well as an internal power supply, it is proposed to provide at least one switching means in which is accommodated in the data carrier in order to realize temporary d... | 01/14/2003 |
