Patents
Sitemap › H02 - Generation, conversion, or distribution of electric power › H02J - Circuit arrangements or systems for supplying or distributing electric power; Systems for storing electric energy › H02J 9 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
Patents for H02J 9 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting (16,437)
06/2003
06/11/2003CN1423389A Bus-controlled parallel uninterrupted power source (UPS) system
06/10/2003US6577513 Lighting equipment built-in on-line uninterruptible power system capable of outputting AC sinusoidal power from a single DC source
06/10/2003US6577136 Modular self-diagnostic and test switch assembly for controlling inverter operations
06/10/2003US6577103 Circuit having a DC load, a rectifier and a sodium sulfur battery electrically connected to one another, and a rectifier output voltage controller provided between said rectifier and said sodium sulfur battery
06/09/2003CA2420486A1 Mobile power source
06/05/2003US20030105982 Uninterruptible power supply unit
06/05/2003US20030105675 Remote monitoring system for uninterruptible power supply
06/05/2003US20030103366 Dual input AC/DC to programmable DC output converter
06/05/2003US20030102718 Multiple flywheel energy storage system
06/05/2003US20030102672 Low-energy storage fast-start uninterruptible power supply method
06/04/2003CN1421796A Long-distance monitoring system for uninterrupted power source apparatus
06/04/2003CN1110879C Battery charger and method for controlling power control switch of charge system
06/03/2003US6573626 Apparatus for uninterruptedly supplying power including an electrical machine and a flywheel
06/03/2003CA2274184C Meter collar with interface for connecting on-site power source and the interface itself
05/2003
05/29/2003US20030098679 Electrical apparatus, computer equipment, intelligent, and power-supply control method
05/28/2003CN2553574Y Wired TV signal power supply switchover device
05/28/2003CN1110119C Temp. control switch controlled holding charging circuit adapted for wide voltage change range
05/28/2003CN1110116C UPS without power consumption
05/27/2003US6570439 Circuit arrangement to reduce the supply voltage of a circuit part and process for activating a circuit part
05/22/2003WO2002097456A3 Self-diagnosis system for an energy storage device
05/22/2003US20030094858 Electronic timers using supercapacitors
05/21/2003EP0826218B1 A modular cache memory battery backup system
05/21/2003CN2552233Y Domestic automatic power switching switch
05/21/2003CN1419728A AC power generating system
05/21/2003CN1419518A Emergency power supply device for lift systems
05/21/2003CN1109393C 便携式电子装置 The portable electronic device
05/15/2003US20030090331 Improved oscillator system and method
05/15/2003US20030090158 System and method for redundant power supply connection
05/15/2003US20030090157 Power apparatus for intermittently powered equipment
05/15/2003US20030090156 Current adjusting apparatus and current adjusting method
05/15/2003US20030090155 Electric power system interconnection device
05/15/2003US20030089556 Emergency power supply device for lift systems
05/14/2003EP1311049A2 Method and network for providing backup power to networked devices
05/14/2003EP1311048A2 Power controller, power generation system and control method of power controller
05/14/2003CN1417919A UPS managing system and method, electrical equipment managing system and computer
05/14/2003CN1417918A System connector
05/14/2003CN1417917A Electric power controller, power generator system and control method of the electric power controller
05/13/2003US6563428 Disaster lighting system for railroad cars
05/13/2003US6563233 Control for main and standby power supplies
05/13/2003CA2411321A1 Power apparatus for intermittently powered equipment
05/08/2003WO2003038981A1 Dual input ac and dc power supply having a programmable dc output utilizing a secondary buck converter
05/08/2003WO2003038980A1 Dual input ac/dc/battery operated power supply
05/08/2003WO2003038979A1 Dual input ac and dc power supply having a programmable dc output utilizing single-loop optical feedback
05/08/2003WO2003038978A1 Dual input ac/dc to programmable dc output converter
05/08/2003WO2003015252A3 Appliance control system with power controller
05/08/2003WO2002071585A3 Circuit and method for inputting a start signal for a controller
05/08/2003US20030087678 Energy conservation system
05/08/2003US20030086024 Micro-power stand-by mode
05/08/2003US20030085626 Electrical apparatus, computer, power switching unit, and power switching method
05/08/2003US20030085624 Uniterrupted power supply managing system and managing method, and electric device managing system and program
05/08/2003US20030085623 Transfer relay for computer based equipment
05/08/2003US20030085621 Power supply methods and configurations
05/07/2003EP1119894B1 Uninterruptible power supply systems, voltage regulators and operating methods employing controlled ferroresonant transformer circuits
05/07/2003CN2549684Y Internal auxiliary and emergercy illuminating lamps
05/06/2003US6560128 Ferroresonance-suppressing static transfer switch
05/06/2003US6559559 Power system utilizing a DC bus
05/02/2003EP1306959A2 Uninterrupted power supply managing system and managing method, and electric device managing system and program
05/02/2003EP1306958A2 Generator with DC boost
05/02/2003EP1078437B1 Embedded backup energy storage unit
05/01/2003WO2002065673A3 Energy conservation system
05/01/2003US20030081439 Dual input AC/DC/ battery operated power supply
05/01/2003US20030080629 Stabilization circuit for compensating fluctuations in a voltage at a user
05/01/2003US20030080626 Apparatus and method for staged power load transfer
05/01/2003US20030080625 Low cost redundant AC to DC power supply
05/01/2003US20030080624 Power supply system with control of number of fully operational supplies for energy efficiency
05/01/2003US20030080623 Dual input AC and DC power supply having a programmable DC output utilizing single-loop optical feedback
05/01/2003US20030080622 Generator with DC boost for uninterruptible power supply system or for enhanced load pickup
04/2003
04/30/2003CN2548349Y Multi-way redundant power source for mechanical driven pump monitor
04/30/2003CN1107368C On-line immediate power switching device
04/29/2003US6556459 Uninterruptible power supply and method of turning off AC switch for uninterruptible power supply
04/24/2003US20030078006 Remote radio data communication system with data rate switching
04/24/2003US20030077493 Methods of using fuel cell system configured to provide power to one or more loads
04/24/2003US20030076696 Device of uninterruptible power supply
04/24/2003US20030075985 Multipurpose data report
04/24/2003US20030075982 Transfer switch
04/23/2003CN1412634A Stabilivolt circuit
04/23/2003CN1106759C Apparatus for determining if duration of power failure exceeded predertermined limits
04/22/2003US6552670 Location encoder
04/22/2003US6552447 Power supplying apparatus, image forming apparatus and method of controlling the same
04/17/2003WO2003032466A1 Uninterruptible power supply and its starting method
04/17/2003WO2003032429A2 Method and system for bridging short duration power interruptions
04/17/2003US20030072977 Method and system for controlling and recovering short duration bridge power to maximize backup power
04/16/2003EP1301983A1 Power system utilizing a dc bus
04/16/2003EP1301974A1 Emergency power supply device
04/15/2003US6549440 AC power supply apparatus and methods providing output control based on estimated instantaneous reactive power
04/15/2003US6548986 Battery backup system for appliances using wall transformers
04/10/2003WO2003030341A2 Induction generator power supply
04/10/2003US20030069050 Portable electronic system equipped with a spare battery device
04/10/2003US20030069001 Ruggedized tradesworkers radio
04/10/2003DE20218510U1 Automatic switching circuit for emergency lighting, carries out monitoring of supply at reduced voltage which is isolated from mains voltage
04/09/2003CN2544455Y Spare emergency power supply for elevator used in power cutting off
04/09/2003CN1105346C Power management method in personal digital assistant
04/08/2003US6545481 Power interruption detection
04/08/2003CA2168520C Inverter/charger circuit for uninterruptible power supplies
04/03/2003WO2002060031A3 Uninterruptible power supply
04/03/2003US20030062775 Direct current uninterruptible power supply method and system
04/03/2003US20030062774 Robust controller for controlling a ups in unbalanced operation
04/03/2003DE20217371U1 Emergency light for static or mobile use, includes control circuit automatically activating LED on loss of mains power
04/02/2003EP1297724A1 Rechargeable lamp system
04/02/2003CN2543319Y Domestic emergency illuminating lamp device
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