| Patents for H02J 9 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting (16,437) |
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| 04/27/1999 | US5896948 Reserve power system |
| 04/21/1999 | EP0795136A4 Ups for medical imaging system |
| 04/21/1999 | CN1214562A Power failure identifying method for industrial power network and its application |
| 04/20/1999 | US5896282 Inverter circuit and integrated uninterruptible power supply protection system |
| 04/20/1999 | US5896280 Frequency converter and improved UPS employing the same |
| 04/20/1999 | US5896026 Power conservation and management system for a self-powered electronic lock |
| 04/14/1999 | EP0908001A1 Independent load sharing of ac power systems connected in parallel |
| 04/14/1999 | EP0908000A1 Wireless selective tripping of ac power systems connected in parallel |
| 04/14/1999 | EP0907999A1 Power supply for light emitting diode array |
| 04/13/1999 | US5894415 Fault tolerant power supply including a switching mechanism for controlling the operation of plural voltage converters in response to changing input voltage levels |
| 04/08/1999 | WO1999017426A2 An electric power plant with electric machine and auxiliary power means |
| 04/08/1999 | WO1999017419A2 Fire extinguisher cabinet with emergency lighting |
| 04/08/1999 | DE19744099A1 Bus station for bus system |
| 04/08/1999 | DE19742086A1 Fail-safe voltage supply plant |
| 04/08/1999 | CA2305418A1 An electric power plant |
| 04/08/1999 | CA2248408A1 A time-division radio that is powered by a low-power energy source |
| 04/07/1999 | EP0906524A1 System for operating a control device in a motor vehicle |
| 04/06/1999 | US5892302 Power switching circuit |
| 04/06/1999 | US5892299 Simultaneous power supply source |
| 04/06/1999 | US5892298 Control circuit for selectively providing electrical energy to an electrically controlled lock actuator |
| 04/06/1999 | US5892297 Power transfer system |
| 04/01/1999 | DE19839878A1 Emergency operating device for device driven by permanent magnet synchronous motor e.g. passenger elevator |
| 04/01/1999 | DE19743138A1 Emergency current supply for car emergency and/or accident call system |
| 03/31/1999 | EP0904625A1 Emergency power supply |
| 03/31/1999 | EP0904621A1 Modular power management system and method |
| 03/31/1999 | EP0861519A4 Flywheel-speed sensing for an emergency-power engine |
| 03/30/1999 | US5889933 Adaptive power failure recovery |
| 03/30/1999 | US5889661 Power conversion apparatus, control method and uninterruptible power supply equipped with the apparatus |
| 03/30/1999 | US5889659 System for estimating a load to optimize a backup energy system response |
| 03/30/1999 | US5889465 Power service unit with automated dialer and other enhancements |
| 03/30/1999 | US5889386 Battery conditioning system having communication with battery parameter memory means in conjunction with battery conditioning |
| 03/25/1999 | WO1999014838A1 Method and system for distribution of stand-by electric power |
| 03/24/1999 | EP0903968A1 Lighting system |
| 03/24/1999 | CN1212087A Ups卡 Ups Card |
| 03/24/1999 | CN1042685C Non-interruption power supply device and method |
| 03/23/1999 | US5886880 Power circuit for transferring energy by alternately switching winding circuits of a transformer at high speed |
| 03/23/1999 | US5886561 Backup battery switch |
| 03/23/1999 | US5886503 Back-up battery management apparatus for charging and testing individual battery cells in a string of battery cells |
| 03/23/1999 | US5886425 Electronic products with standby power source |
| 03/18/1999 | WO1998041793A3 High efficiency lighting system |
| 03/17/1999 | EP0901699A1 Uninterruptible power supply |
| 03/16/1999 | US5884087 Power management system for a computer |
| 03/16/1999 | US5883493 Battery pack having memory |
| 03/16/1999 | US5883492 Battery pack having memory |
| 03/11/1999 | WO1999012245A2 Portable electronic device and method |
| 03/10/1999 | CN1210292A Power management method in personal digital assistant |
| 03/10/1999 | CN1210161A Nonwoven fabric of multi-length, multi-denier fibers and absorbent article formed therefrom |
| 03/09/1999 | US5880537 Uninterruptable power supply |
| 03/04/1999 | DE19746546C1 Method of short-term maintenance of output voltage when input voltage fails using autonomy capacitor |
| 02/25/1999 | WO1999009635A1 Control loop for pulse charging lithium ion cells |
| 02/25/1999 | WO1999009631A1 System interconnecting device and decentralized power supply equipped with the same and having instantaneous voltage drop preventing function |
| 02/25/1999 | CA2267304A1 System interconnection device and distributed power supply device including the same having instantaneous voltage drop counter-measure function |
| 02/23/1999 | US5874788 External backup power supply |
| 02/17/1999 | EP0897208A2 Fail-safe system, e.g. electric brake system or electric steering system for a motor vehicle |
| 02/16/1999 | US5872984 Uninterruptible power supply providing continuous power mainstore function for a computer system |
| 02/10/1999 | EP0896414A2 Battery and flashlight recharger |
| 02/09/1999 | US5870613 Power mangement system for a computer |
| 02/08/1999 | CA2244215A1 Battery and flashlight recharger |
| 02/04/1999 | WO1999005790A1 Apparatus and method for extending the supply of reserved power during a line power interruption |
| 02/04/1999 | DE19733042A1 Protected current supply device |
| 02/02/1999 | US5867377 System and method for improving the efficiency of reserve battery-powered, partitioned power conversion systems under light load conditions |
| 02/02/1999 | CA2168676C Failure detection system for detecting a failure in a power converter |
| 01/27/1999 | EP0893870A2 Mains power supply apparatus |
| 01/27/1999 | CN2305800Y Double electric power supply non-contact automatic changing-over arrangement |
| 01/27/1999 | CN1206241A Power circuit for transferring energy by alternately switching winding circuits of tranformer at high speed |
| 01/27/1999 | CN1206233A Controller of power tranfer device |
| 01/26/1999 | US5864221 Dedicated avionics standby power supply |
| 01/19/1999 | US5862493 External power source to main battery power sources switch |
| 01/19/1999 | US5862046 For a timepiece |
| 01/13/1999 | EP0826218A4 A modular cache memory battery backup system |
| 01/13/1999 | EP0824779B1 Process and circuitry to cover peak energy demands in electric alternating or three-phase current networks |
| 01/13/1999 | CN1204879A Device for distributing energy for airplane |
| 01/12/1999 | US5859583 Occupant protection system for automotive vehicle |
| 01/12/1999 | US5859499 Emergency lighting system with a DC sensing load relay |
| 01/12/1999 | US5859480 AC power supply controller for use in semiconductor fabrication facilities |
| 01/07/1999 | EP0889571A2 An auxiliary electric supply apparatus |
| 01/07/1999 | EP0888659A1 Customer side power management system and method |
| 01/07/1999 | DE19727771A1 Emergency power supply for ISDN telephone |
| 01/06/1999 | CN1204423A Non-break power supply |
| 01/05/1999 | US5856737 Fast battery charging system and method |
| 01/05/1999 | US5856712 Uninterruptible power supply method |
| 01/03/1999 | CA2603761A1 Emergency lighting device |
| 01/03/1999 | CA2601192A1 Emergency lighting device |
| 12/30/1998 | WO1998059413A1 Integrated uninterruptible power supply protection system with novel inverter circuit |
| 12/30/1998 | EP0886911A1 Ups card |
| 12/30/1998 | CA2290403A1 Integrated uninterruptible power supply protection system with novel inverter circuit |
| 12/29/1998 | US5854551 Battery charger with low standby current |
| 12/29/1998 | CA2126405C Power regulation for redundant battery supplies |
| 12/23/1998 | WO1998058271A1 Back-up battery management apparatus for charging and testing individual battery cells in a string of battery cells |
| 12/23/1998 | WO1998038727A3 Dc-dc converter with multiple outputs turned on and off in certain sequence |
| 12/23/1998 | EP0885476A1 Integrated voltage regulating circuit useful in high voltage electronic encoders |
| 12/22/1998 | US5852333 Electric actuator return-to-normal using capacitor energy storage with regulated output |
| 12/20/1998 | CA2208380A1 Integrated uninterruptible power supply protection system with novel inverter circuit |
| 12/16/1998 | EP0884821A1 Arrangement for power distribution, in particular for an aircraft |
| 12/16/1998 | EP0883924A1 Electric power supply device for producing a plurality of voltages and apparatus comprising such a device |
| 12/16/1998 | CN1202281A Modular power supply |
| 12/15/1998 | US5850113 Super capacitor battery clone |
| 12/10/1998 | WO1998038778A3 Arrangement in which a useful signal is transmitted between at least two device units |
| 12/09/1998 | EP0883225A1 System for automatic supervision of storage battery charge in an engine driven standby power unit |
| 12/09/1998 | CN1201563A Battery coupler |