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)
01/2000
01/06/2000WO2000001205A1 Ballast circuit
01/04/2000US6011327 AC transfer switch
01/04/2000US6011324 Arrangement for ensuring uninterrupted current supply to an electrical consumer
01/04/2000US6010228 Wireless emergency safety light with sensing means for conventional light switch or plug receptacle
01/01/2000CA2274998A1 Light socket adapted smoke detector
12/1999
12/29/1999WO1999067703A1 Automatic resumption of computer operation following power failure
12/22/1999EP0965160A1 Battery charger with low standby current
12/22/1999CN2355491Y Automatic electric switches for heating cold machine oil and keeping temperature
12/21/1999US6006116 Time-division radio that is powered by a low-power energy source
12/21/1999CA2188360C Apparatus and method for discharging and charging a multiple battery arrangement
12/21/1999CA2154326C Battery system and intermittent motion apparatus using same
12/15/1999CN1047487C Power supply control system and method for paging receiver
12/09/1999DE19835632C1 Automatic door drive, esp. for a sliding door with at least one door panel
12/08/1999EP0963098A2 Polarity switching and network termination unit in a telecommunication network
12/08/1999CN1238097A Power supply for standby operation
12/08/1999CN1238096A Stand by power supply for video display apparatus
12/07/1999US5998887 Battery test circuit for optical network and method of operation thereof
12/07/1999US5998886 Power supply apparatus having a function of compensating for changes in voltage
12/02/1999WO1999062160A1 Method and equipment for controlling a power supply system
12/01/1999EP0961526A2 Electronic control system for operating emergency lamps
12/01/1999EP0961383A1 Method and device for testing the capacity of a storage capacitor in a passenger safety system
12/01/1999CN1237283A Portable electronic device and method
11/1999
11/30/1999US5995891 Automotive occupant restraint system with energy reserve circuit
11/30/1999US5995400 Uninterruptible power supply system with removable front panel display and control module
11/30/1999US5995396 Hybrid standby power system, method of operation thereof and telecommunications installation employing the same
11/30/1999US5994795 Method and a system for electrically powering electronic equipment
11/30/1999US5994794 Methods and apparatus for providing protection to batteries in an uninterruptible power supply
11/30/1999US5994793 Uninterruptible power supply with plurality of inverters
11/25/1999WO1999060832A1 Electronic circuit card assembly
11/25/1999WO1999060826A1 Lamp fault detection
11/25/1999WO1999060690A1 Systems and methods for producing standby uninterruptible power for ac loads using rectified ac and battery
11/25/1999WO1999060689A1 Embedded backup energy storage unit
11/25/1999WO1999060687A1 Power system
11/25/1999CA2332840A1 Power system
11/25/1999CA2332251A1 Embedded backup energy storage unit
11/25/1999CA2331557A1 Lamp fault detection
11/24/1999EP0959548A2 Electronic control circuit for the recharging of an accumulator battery, in particular for emergency lamps
11/24/1999EP0793862A4 Smart battery device
11/23/1999US5990590 Versatile AC dynamo-electric machine
11/23/1999US5990577 Hub for local area network with backup power supply system
11/23/1999US5990575 Auxiliary power source control systems and methods
11/18/1999WO1999059238A1 Uninterruptible power supply with plurality of inverters
11/18/1999CA2350486A1 Uninterruptible power supply with plurality of inverters
11/17/1999EP0907999A4 Power supply for light emitting diode array
11/16/1999US5986435 Method of utilizing a battery powered system having two processors
11/16/1999US5986434 Controller system for a DC power supply
11/16/1999US5986407 Control apparatus for permitting operation of an ac-powered lamp unit as an emergency lighting device
11/11/1999DE19819912A1 Polarity switching device for network termination for telecommunications network
11/09/1999US5982652 Method and apparatus for providing uninterruptible power using a power controller and a redundant power controller
11/09/1999US5982645 Power conversion and distribution system
11/09/1999US5982098 Smart logic switching uninterruptible power source
11/04/1999WO1999056376A1 Uninterruptible power supply
11/04/1999WO1999026330A3 Universal power supply
11/04/1999DE19906305A1 Electrical power supply arrangement for electronic loads in motor vehicles, esp. for security-relevant loads
11/03/1999CN1233826A Controlling device for image recording regeneration apparatus
11/02/1999US5978237 Power recovery system
11/02/1999US5978236 Uninterruptible power supply with direction of DC electrical energy depending on predetermined ratio
11/02/1999US5977747 Cellular phone battery charger with an emergency battery charging function
11/02/1999US5977657 Electric power supply device for producing a plurality of voltages and apparatus comprising such a device
11/02/1999US5977652 Device for supplying voltage in a motor vehicle including two batteries and having improved reliability
10/1999
10/28/1999DE19833420C1 Emergency current supply method using electromechanical energy converter e.g. for submarine
10/27/1999EP0901699A4 Uninterruptible power supply
10/21/1999WO1999053593A1 Device and method for supplying an electric load with electric energy
10/20/1999EP0951129A1 Device and method for back-up supply of an audio-visual reproduction system
10/20/1999EP0951128A2 A spacecraft power system
10/19/1999US5969436 Connect/disconnect circuit for a reserve battery and method of operation thereof
10/19/1999US5969435 Modular DC cogenerator systems
10/14/1999DE19916020A1 Power supply circuit structure
10/14/1999CA2269012A1 Secure electrical power device and process for an audiovisual reproduction system
10/13/1999EP0949741A2 An emergency lighting network
10/13/1999EP0948828A1 Method and circuit for depassivation of a battery
10/13/1999EP0525133B1 Fail-safe uninterruptible lighting system
10/13/1999CN1231737A Method and arrangement for controlling functions in a programme-controlled circuit in the event of operating voltage failure
10/12/1999US5966000 Storage battery auxiliary charging system with surveillance functions
10/06/1999EP0947042A1 Hybrid generator apparatus
09/1999
09/29/1999EP0945960A2 Power supply apparatus and method, and fabrication apparatus
09/29/1999CN2341315Y Back-up safety power supply for oil field operation
09/29/1999CN1230051A Fast cut-off switch using semiconductor tech.
09/28/1999US5959368 Power supply apparatus for supplying power from a plurality of batteries to a plurality of loads, and electronic appliance using the power supply apparatus
09/28/1999US5958054 System and method for emulating an uninterruptable power supply (UPS) using a portable computer
09/23/1999WO1999048193A2 Uninterruptible power supply
09/23/1999DE19812341A1 Schneller Trenner in Halbleitertechnologie Fast separator in semiconductor technology
09/22/1999EP0944155A2 Fast disconnect switch in semi-conductor technology
09/22/1999CN1229533A High efficiency lighting system
09/22/1999CN1045236C Differential distribution type electric energy storage system
09/22/1999CN1045234C Charge control apparatus and electronic apparatus provided with the control apparatus
09/21/1999US5955844 Smart logic switching uninterruptible power source
09/21/1999US5955843 Relay circuit for providing power from a normal or emergency power supply to ignite and drive a high intensity discharge lamp
09/21/1999CA2180495C Emergency lighting battery charging circuit
09/16/1999WO1999046844A1 Secondary power supply for use with handheld illumination devices
09/16/1999DE19809999A1 Energy-saving network
09/15/1999EP0942518A2 A power supply apparatus
09/09/1999DE19808999A1 X=ray diagnostic device with interruption free voltage supply
09/08/1999EP0940904A2 Emergency lighting system
09/08/1999EP0939997A1 Back-up battery management system for an uninterruptible dc power supply
09/07/1999US5949662 No-break power supply
09/07/1999US5949660 Switched-mode power supply having a standby mode
09/07/1999US5947208 Fire extinguisher cabinet with emergency lighting
09/07/1999CA2174831C Battery continuation apparatus and method thereof
09/02/1999WO1999044269A1 Power supplies for ecus
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