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)
02/1996
02/20/1996US5493199 In a battery conditioning system
02/15/1996DE19529175A1 Schalt-Stromversorgungssystem für zwei oder mehrere eingangsseitige Spannungspegel A switching power supply system for two or more input-side voltage level
02/15/1996DE19502224C1 Serial hybrid drive for automobile
02/14/1996EP0696832A2 Power supply unit for an electronic system and a method for controlling the unit
02/14/1996EP0696831A2 Modular power supply system
02/11/1996CA2143171A1 Modular power supply system
02/07/1996EP0500789B1 An uninterrupted power supply system having improved power factor correction circuit
02/06/1996US5489836 Battery charging circuit for charging NIMH and NICD batteries
01/1996
01/31/1996EP0695017A2 Battery connecting device for a computer and a method of switching batteries
01/31/1996CN2219004Y Intelligent fluorescent lamp for lighting and emergeney use
01/31/1996CN1115925A Power supply control for a receiver
01/31/1996CN1030858C Active driving or centrifugal force linear servo dynamic flywheel
01/30/1996US5488279 Dual power refrigerator
01/30/1996US5487956 Adaptive backup battery management for vehicular based electronic modules
01/30/1996US5487278 Back-up switching system for refrigerator trucks
01/23/1996CA2057797C Fail-safe uninterruptible lighting system
01/10/1996EP0604540B1 Measuring process for obtaining a switching command in a rapid changeover device
01/09/1996US5483463 Uninterruptible power supply (UPS) and method
01/09/1996US5483108 Uninterrupted distributed storage supply system
01/04/1996DE4422256A1 Electrical on-board network for vehicle
01/04/1996DE4421756A1 Interruption-free reversal of power to HV discharge lamp
01/03/1996EP0690542A1 Latent fault detection in a redundant power supply
01/03/1996EP0690541A1 Electronic apparatus having two power supply modes
12/1995
12/31/1995CA2151684A1 System for switching power and scrubbing for faults
12/27/1995CN1114123A Tracking external power supply
12/21/1995WO1995034933A1 Device for switching between two power supplies
12/20/1995EP0688082A1 Portable communication apparatus preventing trouble when battery wears
12/20/1995EP0687395A1 Process for preventing damage to numerically controlled machines in the event of a power failure
12/20/1995CN1113616A Backup power-supply system for emergency
12/19/1995US5477091 High quality electrical power distribution system
12/19/1995US5476293 Electric energy storage and distribution system of differential distribution type
12/14/1995DE19518782A1 Electrical storage unit for voltage backup
12/13/1995EP0465612B1 Circuit arrangement with at least one light-emitting source
12/13/1995CN1113404A Electronic device for controlling application of a charging current thereto and associated method therefor
12/13/1995CN1030520C Power supply with battery disconnect
12/07/1995DE4419467A1 Modular power supply for electrical equipment
12/05/1995US5473533 Method and apparatus for efficient phase and frequency coherence locking optimized for digital systems
12/05/1995US5473528 Parallel connection of different types of AC power supplies of differing capacities
11/1995
11/29/1995EP0683933A1 An emergency power system.
11/28/1995US5471114 Fail-safe uninterruptible lighting system
11/23/1995DE4417786A1 Inverter for power electronics
11/23/1995DE4416908A1 Current converter for electrical energy storage system
11/21/1995US5469350 Voltage boosting power failure protected power supply device
11/15/1995EP0548271B1 Power control of solar powered display devices
11/08/1995CN2212279Y Two-way power supply automatic change-over device
11/08/1995CN1111471A Electronic device having internal charge regulator
11/08/1995CN1111356A Controller for automatic detecting status of emergency lamp
11/07/1995US5465039 Power supply for electronic device, and electronic device system
11/07/1995US5465011 Uninterruptible power supply with improved output regulation
10/1995
10/31/1995US5463305 Fast battery charging system and method
10/30/1995CA2146597A1 Battery switch for ram backup
10/26/1995DE4414067A1 Mini-multipurpose current generator
10/24/1995US5461263 Method of phase synchronization between two AC signals
10/17/1995US5458991 UPS with auto self test
10/17/1995CA2007458C Electric power supply equipment and method
10/12/1995DE4422991C1 Circuit for uninterruptable power supply to electrical appts.
10/11/1995CN2209852Y Non-power-off escape safety door lamp
10/10/1995US5457414 Power supply loss sensor
10/10/1995US5457377 Method of monitoring the internal impedance of an accumulator battery in an uninterruptible power supply, and an uninterruptible power supply
10/07/1995CA2146413A1 Electrically operated actuator having a capacitor storing energy for returning the actuator to a preferred position upon power failure
10/04/1995CN2209421Y High-efficiency energy-saving emergency fluoriscent lamp
09/1995
09/27/1995EP0674377A1 Data transfer system
09/27/1995EP0673557A1 Power supply for standby circuits of electrical devices
09/21/1995WO1995025381A1 Pollution free electrical power system
09/21/1995DE4419958C1 Redundant current supply circuit for electronic appts.
09/20/1995EP0673100A1 Constant current battery charger with auxiliary supply output for portable apparatus
09/20/1995EP0672316A1 Automatic load current back regulation.
09/20/1995EP0432269B1 System separation detector for power source of distributed type
09/19/1995CA2143377A1 System and method for providing alternate ac voltage
09/06/1995EP0670538A2 A power supply control system for a computer
09/05/1995US5448153 Charge control apparatus and electronic apparatus provided with such a control apparatus
08/1995
08/31/1995DE19506849A1 Power supply for magnetic bearing for turbo-molecular pump
08/30/1995CN2206512Y Double power supply fully automatic switching device
08/29/1995US5446905 Data processing apparatus having improved power supply system
08/29/1995US5446645 Inverter apparatus and uinterruptible power supply using the same
08/23/1995CN1107265A Differential distribution type electric energy storage system
08/22/1995US5444306 Mobile radio telephone apparatus
08/16/1995EP0667019A1 Hand-held data capture system with interchangeable modules
08/16/1995CN1106972A Communication apparatus and power supply device therefor
08/16/1995CN1106959A Power regulation for redundant battery supplies
08/10/1995WO1995021485A1 Power supply for private branch exchange
08/10/1995DE4403309A1 Electronic controlled with dual energisation circuits for motor vehicle
08/09/1995EP0666633A1 An electric energy storage and distribution system of differential distribution type
08/08/1995US5440179 UPS with bi-directional power flow
08/03/1995WO1995020836A1 Generator power system and method
08/02/1995EP0665631A1 Intelligent transformerless system for transferring energy from a power source to an isolated load
08/02/1995EP0665627A2 Method and apparatus for automatically switching and charging multiple batteries
08/01/1995CA2022066C Power supply device
08/01/1995CA2012360C Power supply backup circuit
07/1995
07/29/1995CA2114507A1 Bimodal fast transfer off-line uninterruptible power supply
07/27/1995WO1995017777A3 Internal backup power device for a computer
07/27/1995CA2140993A1 Method and apparatus for automatically switching and charging multiple batteries
07/25/1995US5436513 Method and apparatus for providing energy to an information handling system
07/25/1995US5436512 Power supply with improved circuit for harmonic paralleling
07/20/1995WO1995019654A1 Uninterruptible power supply
07/20/1995DE4401439A1 Uninterrupted power supply for environmentally friendly computer
07/19/1995EP0663167A1 Arrangement for the off-mains switching of a control device
07/19/1995EP0615667B1 Arrangement for the off-mains switching of control devices
07/19/1995CN2203811Y Multi-function electronic table lamp
07/18/1995US5434454 In an electrical alternating power unit
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