Patents for H02J 9 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting (16,437) |
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11/16/2004 | US6819576 Power conversion apparatus and methods using balancer circuits |
11/16/2004 | US6819226 Systems and methods for energy storage in land-based telemetry applications |
11/16/2004 | US6819087 Distributed resource (DR) stabilization control for microgrid applications |
11/16/2004 | US6819086 Power supply device for emergency shut down of a wind turbine |
11/16/2004 | US6819012 Flywheel energy storage system |
11/11/2004 | US20040223347 Uninterruptible power supply system |
11/11/2004 | US20040222840 Electrical circuit for selecting a desired power source |
11/11/2004 | DE10316008A1 Verfahren und Vorrichtung zur sicheren Notbeleuchtung von Tunneln Method and apparatus for safe emergency lighting of tunnels |
11/10/2004 | CN2655584Y Electroluminance emergent lamp device |
11/09/2004 | US6816022 Oscillator system and method for starting and stopping an oscillator |
11/09/2004 | US6815935 Power supply |
11/09/2004 | US6815934 Induction generator power supply |
11/04/2004 | WO2004082306A3 System for providing backup power to an electronic device |
11/04/2004 | US20040220829 Distributed system and method for managing communication among healthcare providers, patients and third parties |
11/04/2004 | US20040218379 Concealed Safety Lighting Device |
11/04/2004 | US20040217653 Supply selection circuit with programmable hysteresis |
11/04/2004 | US20040217652 Power supply system and electronic device comprising the same |
11/03/2004 | CN1543036A Intelligent, energy-saving power supply system |
11/02/2004 | US6812591 Power control device with electric double layer capacitor unit cells |
11/02/2004 | US6812587 Continuous power supply with back-up generation |
10/28/2004 | WO2004077648A3 Uninterruptible power supplies with converter operation conditioned upon static switch communication and methods of operation thereof |
10/28/2004 | US20040213022 Power factor corrected UPS with improved connection of battery to neutral |
10/28/2004 | US20040212355 Off-line non-step voltage regulation uninterruptible power supply |
10/28/2004 | US20040212253 Uninterruptible power supply having programmable power output |
10/27/2004 | EP1471593A1 Power controller, power control method, information processor, and power control program |
10/27/2004 | CN2652084Y Multifunctional fluorescent tube |
10/27/2004 | CN2652007Y Power supplying system of mobile laboratory |
10/27/2004 | CN1541439A dual input Ac and DC power supply having programmable DC output utilizing secondary buck converter |
10/27/2004 | CN1540836A Method and device for backing up secondary power source |
10/27/2004 | CN1173446C Ups |
10/21/2004 | WO2004090093A1 Culture treating device and automatic culture treating device |
10/21/2004 | US20040208667 Power supply control apparatus and electric device |
10/21/2004 | US20040207404 Power supply, and apparatus and method for operating a power supply |
10/21/2004 | US20040207266 Standby electrical power generation and storage system and method |
10/20/2004 | EP1469585A1 A METHOD OF ESTABLISHING A MASTER−HOST IN MODULES CONNECTING IN PARALLEL |
10/20/2004 | CN1538806A Reliable board mounted power module |
10/20/2004 | CN1538587A AC Adaptor power supply apparatus |
10/20/2004 | CN1172418C Power supply equipment with parallelly connected two PC power supplies |
10/19/2004 | USRE38625 Static switch method and apparatus |
10/19/2004 | US6806678 Battery charger |
10/19/2004 | US6806589 No break electric power transfer system |
10/19/2004 | US6806588 Power controller for a vehicle |
10/19/2004 | US6805469 Concealed safety lighting device |
10/14/2004 | WO2004068324B1 Power supply with integrated dc supplies for external devices and universal cable |
10/14/2004 | US20040203834 Remote radio data communication system with data rate switching |
10/14/2004 | US20040201991 Led illuminator with capability of stable brightness |
10/14/2004 | US20040201984 Electroluminescent lighting device |
10/14/2004 | US20040201931 Configurable multiple power source system |
10/14/2004 | US20040201282 Stable power supply system, operation method thereof, and stable power supply operation program |
10/14/2004 | US20040201278 Charging circuit in uninterruptible power supply system |
10/14/2004 | DE10312933A1 Electronic module for emergency lamps effective, when current supply for normal illumination system has failed, consisting of direct to alternating current (DC/AC) converter with downward transformation characteristic |
10/13/2004 | EP1467465A2 Method and device for safe emergency lighting of tunnels |
10/13/2004 | EP1466377A1 Fuel cell system power control method and system |
10/13/2004 | CN2648682Y Automatic power supply changover switch |
10/13/2004 | CN2648681Y Auxiliary power supply device for large power uninterruption power source equipment |
10/13/2004 | CN1171371C Power supply system with spare AC power source and function against reverse insertion of AC power source |
10/13/2004 | CN1171369C Modular power management system |
10/12/2004 | US6803679 Parallel redundant power system and method for control of the power system |
10/12/2004 | US6803678 Battery communication system |
10/12/2004 | CA2414699C Rechargeable lamp system |
10/07/2004 | US20040196005 Uninterruptible power supply device with circuit for degradation judgment of storage battery |
10/07/2004 | US20040194218 Mattress cavity cushion system |
10/06/2004 | EP1465319A2 Uninterruptible power supply device with circuit for degradation judgment of storage battery |
10/06/2004 | EP1465318A2 Uninterruptible power supply system |
10/06/2004 | CN2647013Y A single live wire fluorescent lamp with emergency handling function |
10/06/2004 | CN1535260A Perfluoroalkyl-substituted amines, acids, amino acids and thioether acids |
10/06/2004 | CN1534846A Non-power cutting power supply system |
10/06/2004 | CN1534843A Intelligent railway signal power source switching module |
10/05/2004 | US6801027 Power conversion in variable load applications |
10/05/2004 | US6801023 DC/DC boost converter and control method therefor |
10/05/2004 | US6801019 AC power generating system |
10/05/2004 | US6801015 Method and circuit arrangement for preventing the stand-by discharge of a battery-powered signal evaluation circuit of a sensor |
10/05/2004 | US6800963 Power controller, power generation system, and control method of power controller |
10/05/2004 | US6800961 Apparatus and method for controlling a power supply |
09/30/2004 | US20040189267 DC-DC converter circuit with long holdover time and reduced spatial requirements |
09/30/2004 | US20040189253 AC adapter power supply apparatus |
09/30/2004 | US20040189097 Battery communication system |
09/30/2004 | US20040189094 Uninterruptible power supply apparatus |
09/30/2004 | US20040189008 Magneto-turbine electric charging |
09/30/2004 | DE102004011688A1 Bordinternes Stromversorgungssystem Board Internal power supply system |
09/29/2004 | EP1463190A1 Reliable board mounted power module |
09/29/2004 | EP1463178A2 Power generating device |
09/29/2004 | EP1462813A2 System for detecting defective battery packs |
09/29/2004 | EP1460990A2 Mattress and bedpan cushion system |
09/29/2004 | CN2645323Y Power distribution load observing and control terminal |
09/29/2004 | CN2645322Y Intelligent type power supply automatic transfer switch circuit arrangement |
09/29/2004 | CN1533629A Method and device for short-circuiting temporary power failures in a matrix converter |
09/28/2004 | US6798187 Generator status information display for power transfer switch |
09/28/2004 | CA2350435C Efficient battery transfer circuit |
09/28/2004 | CA2155525C An emergency power system |
09/23/2004 | WO2004082306A2 System for providing backup power to an electronic device |
09/23/2004 | WO2004082110A2 Programmable peripheral power hub module |
09/23/2004 | WO2004082098A1 Dc power supply system and switch |
09/23/2004 | WO2004082097A1 Emergency lighting |
09/23/2004 | WO2004063567A3 Mobile power system |
09/23/2004 | DE10308411A1 Gleichstromwandlerschaltung DC-DC converter circuit |
09/23/2004 | CA2515267A1 System for providing backup power to an electronic device |
09/22/2004 | CN1531762A Back-up battery for cellular telephone |
09/22/2004 | CN1531189A Generator |
09/22/2004 | CN1531165A Uninterrupted power device |