| Patents for H02J 9 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting (16,437) |
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| 05/03/1994 | US5309030 Current source for a supplemental inflatable restraint system |
| 04/28/1994 | WO1994009545A1 Power supply installation for an uninterruptible power supply to the load from the mains |
| 04/28/1994 | DE4336698A1 Servo-controller with motor and position indicator - has power failure indicator and switches to emergency power source to allow uninterrupted flow of data |
| 04/27/1994 | EP0594288A1 Smoke detector with capacitor back-up |
| 04/27/1994 | EP0594234A1 Current source for inflatable restraint system |
| 04/27/1994 | CN2163474Y Power supply unit |
| 04/26/1994 | US5307002 Improvements in battery charging circuits |
| 04/26/1994 | US5306956 Connecting system for supplying electrical power to a device in place of a battery along with the transmission of data signals from the device to monitoring apparatus, or supplying electrical power to a battery for the charging thereof |
| 04/20/1994 | EP0592977A2 Single transformer switching regulator |
| 04/20/1994 | CN1024266C Refrigerating system for use in vehicle with engine which enables selective use of commercial AC power source & generator driven by engine for driving refrigerant compressor |
| 04/19/1994 | US5305181 Arm or wrist mounted terminal with a flexible housing |
| 04/19/1994 | US5304916 Battery charger |
| 04/19/1994 | CA2006554C Electrical apparatus power switch and remote control terminal apparatus equipped with said switch |
| 04/13/1994 | EP0294394B1 Peak power shaving apparatus and method |
| 04/12/1994 | US5302858 Method and apparatus for providing battery charging in a backup power system |
| 04/05/1994 | US5300874 Intelligent power supply system for a portable computer |
| 03/31/1994 | WO1994007090A1 Back up power source for a thermostat |
| 03/31/1994 | DE4232104A1 Relay control circuit at set threshold voltage - switches from external to internal voltage supply in event of voltage falling below set threshold level, providing emergency power supply. |
| 03/23/1994 | EP0588569A2 Power supply for electronic device, and electronic device system |
| 03/22/1994 | US5296997 System for protecting a battery |
| 03/22/1994 | US5296799 Electric power system |
| 03/22/1994 | US5296788 System for controlling a motor driven switch |
| 03/22/1994 | CA2041179C Circuit for sustaining power supply output following momentary interruption of commercial a. c. power |
| 03/17/1994 | WO1994006199A1 Simplified ups system |
| 03/16/1994 | CN2159081Y Multifunction portable feeder box with air compressor in it |
| 03/16/1994 | CN2159080Y Multifunction portable feeder box |
| 03/15/1994 | US5295078 Method and apparatus for determination of battery run-time in uninterruptible power system |
| 03/09/1994 | CN1083595A Process for determining the backup time of a battery |
| 03/03/1994 | WO1994005076A1 Dc to dc/dc to ac power conversion system |
| 03/01/1994 | US5291383 Power supply system |
| 03/01/1994 | CA2077228A1 Smoke detector with capacitor back-up |
| 02/23/1994 | EP0583502A1 Circuit arrangement for the generation of a constant output voltage |
| 02/22/1994 | US5289046 Power converter with controller for switching between primary and battery power sources |
| 02/22/1994 | US5289045 Uninterruptible power supply |
| 02/22/1994 | US5289044 Electronic system switchable between its primary circuit and standby circuit |
| 02/17/1994 | WO1994003958A1 Active no-break power transfer control for a vscf power generating system |
| 02/17/1994 | DE4226529A1 Electrical DC power supply - has capacitive energy store supplying load with reserve battery energy when voltage falls below threshold value |
| 02/16/1994 | EP0582890A1 Circuit arrangement |
| 02/15/1994 | US5287053 Power supply with a battery disconnect |
| 02/09/1994 | EP0582526A1 Method for determining battery discharge time |
| 02/09/1994 | CN1081791A Power supply with battery disconnect |
| 02/08/1994 | US5285374 Apparatus for generating digital signal synchronized with phase of power supply |
| 02/08/1994 | US5285365 Power conversion system, method for controlling the same, and uninterruptible power supply using the same |
| 02/08/1994 | US5285029 Device for driving elevator at service interruption |
| 02/01/1994 | US5283905 Power supply for computer system manager |
| 01/26/1994 | EP0580180A1 Charging circuit capable of supplying DC voltage directly to power supply circuit when battery is removed |
| 01/26/1994 | EP0579946A1 Process for maintaining the charge in a storage battery and apparatus for carrying out the process |
| 01/25/1994 | US5282054 Facsimile equipment having different operations with different power sources |
| 01/25/1994 | CA1326532C Connector assembly for plug-in energization and battery activation of an associated electrical apparatus |
| 01/20/1994 | WO1994001912A1 Power supply with a battery disconnect |
| 01/20/1994 | WO1994001908A1 Modular wall panel assembly comprising power surge protector and/or uninterruptable power supply components, and connector adapter unit therefor |
| 01/20/1994 | DE4222994A1 Lighting installation for connection to small generator, e.g. bicycle dynamo - includes light-emitting diode switched by field effect transistor to storage capacitor when rectifier bridge output falls |
| 01/19/1994 | EP0340292B1 Power supply system for segmented loads |
| 01/19/1994 | CN1081030A High-voltage direct-charged and dc-ac converting emergency power supply |
| 01/18/1994 | US5280233 Low-drop voltage regulator |
| 01/13/1994 | DE4241066C1 Automatische Laststromrückregelung Automatic load current feedback control |
| 01/12/1994 | EP0578548A1 Uninterrupted power supply device with an alternating output voltage |
| 01/12/1994 | EP0578531A2 Distributed storage non-interruptable power supply system |
| 01/11/1994 | US5278487 Battery conditioning system having communication with battery parameter memory means in conjunction with battery conditioning |
| 01/11/1994 | US5278454 Emergency capacitive energy source and circuit for damper motors and actuator motors |
| 01/11/1994 | US5278453 Constant-voltage supply system with several constant-voltage sources |
| 01/11/1994 | US5277363 Electrical system for controlling the operation of a heat exchanger unit, thermostat therefor and methods of making the same |
| 01/06/1994 | WO1994000905A1 Transient-free synchronous electrical power machine |
| 01/06/1994 | WO1994000902A1 Capacitive energy source for damper and actuator motors |
| 01/06/1994 | CA2122019A1 Transient-free synchronous electrical power machine |
| 12/29/1993 | EP0367761B1 Backup electrical system for lamps |
| 12/28/1993 | US5274272 Device for supplying electrical energy to a load |
| 12/23/1993 | WO1993026074A1 Power converter with controller for switching between primary and battery power sources |
| 12/22/1993 | EP0575101A2 Power supply architecture |
| 12/22/1993 | EP0574743A2 Buffered voltage supply for on-board electronic |
| 12/22/1993 | EP0574628A1 A modular uninterruptible power supply |
| 12/21/1993 | US5272387 Connecting device of an external electrical power supply source to an aircraft on the ground |
| 12/21/1993 | US5272386 Programmable timer power switch unit with emergency override reset |
| 12/21/1993 | US5272382 Power supply for computer system manager |
| 12/21/1993 | US5272380 Electrical supply control system for a motor vehicle |
| 12/15/1993 | EP0573785A1 Current supply circuit for radio equipment |
| 12/14/1993 | US5270946 Method and apparatus for controlling selection of batteries |
| 12/14/1993 | US5269197 Principle and structure of actively driving or centrifugal linear following dynamic flywheel effect |
| 12/08/1993 | CN2149052Y Self-controlling apparatus for emergency supply |
| 12/07/1993 | US5268850 Automatic power-failure and auxiliary generator control |
| 12/07/1993 | US5268845 Portable electronic system |
| 12/07/1993 | US5267473 Self powered end of train unit |
| 12/01/1993 | EP0571383A1 Battery protection system. |
| 11/30/1993 | US5265488 Double-acting type dynamic back spacing removed driving system |
| 11/24/1993 | EP0570976A2 Electric power supply system |
| 11/24/1993 | EP0570704A2 Flyback converter |
| 11/24/1993 | EP0570636A1 Solid state static power transfer mechanism |
| 11/24/1993 | CN1078830A Charge control apparatus and electronic apparatus provided with such a control apparatus |
| 11/23/1993 | US5264732 A.C. electrical power supply system with a back-up power supply |
| 11/18/1993 | DE4215550A1 DC stand-by power unit for AC mains - has independent DC generator, e.g. fuel cell or photovoltaic cell, supplying bus=bar and DC store, e.g. superconducting magnet or battery bank |
| 11/17/1993 | CN2146610Y 动态飞轮 Dynamic flywheel |
| 11/17/1993 | CN2146604Y 动态飞轮 Dynamic flywheel |
| 11/09/1993 | US5260605 Broadband load disconnect voltage inversion |
| 11/02/1993 | US5258901 Holdover circuit for AC-to-DC converters |
| 10/24/1993 | CA2066935A1 Solid state static power transfer mechanism |
| 10/20/1993 | EP0565555A1 Integral battery charging and supply regulation circuit |
| 10/19/1993 | US5254877 Distributed power supply system |
| 10/13/1993 | EP0565034A2 Distributed power supply system |
| 10/12/1993 | US5253157 Half-bridge inverter with capacitive voltage equalizer |
| 10/12/1993 | US5252891 Uninterruptible fluorescent lamp circuit available for emergency lighting |