| Patents for H02J 9 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting (16,437) |
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| 06/02/2005 | US20050117375 Modular ac voltage supply and algorithm for controlling the same |
| 06/02/2005 | US20050117374 Wide bandwidth ac-power converter |
| 06/02/2005 | US20050116547 Uninterruptible power system with two current conversion units |
| 06/02/2005 | CA2546169A1 Hybrid power system for continuous reliable power at locations including remote locations |
| 06/01/2005 | EP1535384A1 System and method for power load management |
| 06/01/2005 | CN2703351Y Electric rolling door machine controller |
| 06/01/2005 | CN1622418A Switching unit for mean power supply of double battery |
| 05/31/2005 | US6900849 Signal processing apparatus having means for reducing the power consumption |
| 05/31/2005 | US6900595 Illumination unit for normal and emergency operation |
| 05/26/2005 | WO2004038892A3 Hybrid variable speed generator/uninterruptible power supply power converter |
| 05/26/2005 | US20050110787 Display apparatus with power saving capability |
| 05/25/2005 | EP1364439A4 An uninterruptible power supply system using a slip-ring, wound-rotor-type induction machine and a method for flywheel energy storage |
| 05/25/2005 | DE10347182A1 Real-time clock module operation method in personal computer, involves generating signal indicating inadequate battery voltage if communication is successful in spite of reduction of power supply voltage |
| 05/25/2005 | CN2702513Y Power equipment with uninterrupted power supply |
| 05/25/2005 | CN2702510Y Fire-fighting emergency lamp control circuit |
| 05/25/2005 | CN2702508Y Power supply management topology structure |
| 05/25/2005 | CN1619915A Power supply system and its control method |
| 05/24/2005 | CA2235744C Apparatus for buffering the dc voltage at the output of a power supply |
| 05/19/2005 | WO2004066094A3 Power conditioner and backup for security scanning equipment |
| 05/19/2005 | US20050107133 Low cost power back-up system for cordless telephone system |
| 05/19/2005 | US20050105229 Two-level protection for uninterrupted power supply |
| 05/19/2005 | DE202005000313U1 Emergency power supply e.g. for electronic equipment, such as computer, has parallel connected AC and DC current sources |
| 05/19/2005 | DE202004020401U1 Interruption-free power supply device e.g. for computer network, includes controlled switching device with fast switching power transistor |
| 05/18/2005 | EP1530817A2 Power supply unit |
| 05/18/2005 | CN2701170Y A real-time clock control circuit |
| 05/18/2005 | CN2701146Y Operating mechanism with double power supply and single motor |
| 05/18/2005 | CN2701144Y Power supply circuit |
| 05/18/2005 | CN1202659C Stand by power supply for video display apparatus |
| 05/17/2005 | US6895419 Hand-held computerized data collection terminal |
| 05/17/2005 | US6894622 Method and apparatus for delivering uninterrupted power |
| 05/17/2005 | US6894405 Facility for supplying spare or auxiliary power supply to processor device |
| 05/14/2005 | CA2487324A1 Low cost power back-up system for cordless telephone system |
| 05/12/2005 | WO2005043736A1 Forward converter |
| 05/12/2005 | WO2005043711A2 Systems and methods for switching to a back-up power supply |
| 05/12/2005 | US20050099750 DC backup power supply system and disk array using same |
| 05/12/2005 | US20050099138 High efficiency lighting system |
| 05/11/2005 | EP1529694A1 Power supply for vehicle |
| 05/11/2005 | CN1614855A Spare electric power supplying system of zero interrupt converting time |
| 05/11/2005 | CN1614852A Charging circuit, urgent lighting device and luminous device |
| 05/10/2005 | CA2454044C Dual input ac and dc power supply having a programmable dc output utilizing a secondary buck converter |
| 05/06/2005 | WO2005041384A1 Power supply apparatus |
| 05/06/2005 | WO2005020407A3 Uninterruptible power supply |
| 05/05/2005 | US20050094339 Uninterruptible power supply apparatus |
| 05/05/2005 | US20050093513 Electronic device having multiple current outputs |
| 05/05/2005 | US20050093457 Self test emergency ballast |
| 05/04/2005 | EP1527506A2 Uninterruptible power supply apparatus and method |
| 05/04/2005 | CN1612836A Power-supply system |
| 05/04/2005 | CN1200500C Uninterruptible power system |
| 05/03/2005 | US6888431 Remotely operated circuit breaker for emergency lighting circuits |
| 04/30/2005 | CA2447820A1 Household emergency power generator |
| 04/28/2005 | WO2005038951A2 Method and system for managing battery power |
| 04/28/2005 | US20050088860 Starting circuit for power-converting apparatus |
| 04/28/2005 | US20050088793 Systems and methods for switching to a back-up power supply |
| 04/28/2005 | US20050088100 Emergency lighting equipment with automatic charge/discharge and monitoring system |
| 04/28/2005 | US20050088043 Backup power supply system with a null transfer time |
| 04/28/2005 | US20050087987 [household emergency power generator] |
| 04/28/2005 | US20050087603 Hand-held data capture system with interchangeable modules |
| 04/28/2005 | CA2541772A1 Method and system for managing battery power |
| 04/27/2005 | EP1525118A1 Device and method for the redundant voltage supply of safety-relevant systems |
| 04/26/2005 | US6885879 Battery reconnect system for a telecommunications power system |
| 04/26/2005 | US6885112 Proton exchange membrane based power system for a telecommunication facility |
| 04/26/2005 | US6883328 Hybrid power system for continuous reliable power at remote locations |
| 04/21/2005 | WO2005036684A2 Power electronics for fuel cell power system |
| 04/21/2005 | US20050086552 Display unit and power save controller |
| 04/21/2005 | US20050086544 Method and apparatus for correlating system resources to a particular line cord |
| 04/21/2005 | DE19709806B4 Leistungsquellenumschaltschaltung für ein tragbares Telefon Leistungsquellenumschaltschaltung for a portable telephone |
| 04/20/2005 | CN2694589Y Gas generating set self-starting device |
| 04/20/2005 | CN2694588Y Uninterruption power source two-way input automatic switching equipment |
| 04/19/2005 | US6882943 System, method and computer program product for configuring power supply apparatus |
| 04/19/2005 | US6881509 Fuel cell system power control method and system |
| 04/14/2005 | WO2004073134A3 Systems and methods for providing backup energy to a load |
| 04/14/2005 | US20050078494 Power supply with uninterruptible function |
| 04/14/2005 | US20050077866 Method and system for managing battery power |
| 04/14/2005 | DE102004043886A1 Gleichstromenergiereserve DC power reserve |
| 04/13/2005 | CN1197226C Power circuit for use in electric equipment |
| 04/13/2005 | CN1197220C UPS and method for producing AC voltage on both ends of load |
| 04/13/2005 | CN1197217C Battery monitor and battery device |
| 04/12/2005 | US6879140 Power holdup circuit |
| 04/12/2005 | US6879132 Switching power supply unit |
| 04/12/2005 | US6879061 Current adjusting apparatus and current adjusting method |
| 04/12/2005 | US6879060 Method and apparatus for transfer control and undervoltage detection in an automatic transfer switch |
| 04/12/2005 | US6879053 Transformerless, load adaptive speed controller |
| 04/12/2005 | US6879052 Power system for a telecommunication facility |
| 04/07/2005 | WO2005032218A1 Control system for several distributed lamp-operating devices, and method for initializing such a control system |
| 04/07/2005 | WO2005031954A2 Electrical systems, power supply apparatuses, and power supply operations methods |
| 04/07/2005 | US20050075806 Method and system for testing battery connectivity |
| 04/07/2005 | US20050073860 Power factor correcting circuit for uninterrupted power supply |
| 04/07/2005 | US20050073269 Linear motor system |
| 04/07/2005 | DE10342129A1 Ladegerät zum Aufladen einer Batterie und Verfahren zu seinem Betrieb Charger for charging a battery and method for its operation |
| 04/07/2005 | CA2539723A1 Electrical systems, power supply apparatuses, and power supply operations methods |
| 04/06/2005 | CN2690242Y Multifunction automobile emergency power source |
| 04/06/2005 | CN1604991A Domestic combined heat and power unit |
| 04/06/2005 | CN1604448A Power-supply device |
| 04/06/2005 | CN1604425A Standby power supply switching method and apparatus |
| 04/06/2005 | CN1604422A Method and apparatus for conserving battery for operation of a low intensity optical communication probe |
| 04/06/2005 | CN1196239C Switchover apparatus and method for electric source system |
| 04/05/2005 | US6876159 Electronic ballast system for emergency lighting applications |
| 04/05/2005 | US6876103 Automatic transfer switch systems and controllers |
| 03/31/2005 | WO2005029675A1 Backup circuit |
| 03/31/2005 | WO2005029668A2 Automatic transfer switch and protection device |