| Patents for H02J 9 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting (16,437) |
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| 01/05/1993 | US5177371 Auxiliary battery operation detection circuit |
| 12/24/1992 | DE4121007A1 On=line uninterruptable power supply for fire or intruder alarm system - has DC=AC converter coupled via filter to centre tap of output transformer |
| 12/22/1992 | CA1311800C Independent emergency lighting system with self-diagnosis |
| 12/16/1992 | CN2125203U 全自动供电控制器 Automatic Power Controllers |
| 12/16/1992 | CN2125202U Double power supply automatic change-over device |
| 12/15/1992 | US5172292 Apparatus for protecting electronic equipment powered from a marine power source |
| 12/15/1992 | US5172009 Standby power supply with load-current harmonics neutralizer |
| 12/10/1992 | WO1992022112A1 Battery disconnect device |
| 12/08/1992 | US5170070 Switching power supply and adapter for switching power supply |
| 12/08/1992 | CA1311274C Detector unit with auxilliary battery |
| 12/01/1992 | US5168436 Uninterruptible power supply |
| 12/01/1992 | US5168206 Battery manager chip with connections for redundant backup battery |
| 11/19/1992 | EP0514171A1 Back-up uninterruptible power system |
| 11/19/1992 | EP0514072A2 Facsimile equipment |
| 11/18/1992 | CA2068239A1 Back-up uninterruptible power system |
| 11/11/1992 | CN1066106A Driving or linearly slaving through centrifugal force dynamic flywheel |
| 11/10/1992 | US5162663 Selective output disconnect for a single transformer converter |
| 11/03/1992 | US5160851 Rechargeable back-up battery system including a number of battery cells having float voltage exceeding maximum load voltage |
| 10/28/1992 | EP0510015A1 Method of charging a battery means with a load |
| 10/28/1992 | CN1018881B Uninterruptible power supply |
| 10/27/1992 | US5159426 Integrated circuit with improved battery protection |
| 10/27/1992 | US5159259 Power supply system for continuously energizing a D.C. load |
| 10/27/1992 | US5159257 Vehicle power supply apparatus for protecting a battery from excessive discharge |
| 10/14/1992 | EP0508790A1 The principles and structure of variable-inertia flywheels |
| 10/13/1992 | US5154504 Communications and testing for emergency systems |
| 10/07/1992 | EP0507495A1 Automatic system battery reconnect circuit responsive to insertion of new battery replacement |
| 10/06/1992 | CA1308438C Inductor apparatus for application to ferroresonant regulators |
| 10/06/1992 | CA1308435C Peak power shaving apparatus and method |
| 10/01/1992 | WO1992016992A1 Device for suppressing voltage drops |
| 09/30/1992 | CN1018497B Power supply system |
| 09/24/1992 | DE4109645A1 Einrichtung zur unterdrueckung von spannungseinbruechen Device for suppressing spannungseinbruechen |
| 09/22/1992 | US5150032 Combined charging and supply circuit |
| 09/22/1992 | US5149185 Emergency hall lighting |
| 09/15/1992 | US5148095 Permanent power pack for computer clock and battery backed memory |
| 09/15/1992 | US5148043 Uninterruptible power supply diagnosing remaining battery capacity during normal external power source operation |
| 09/15/1992 | US5148042 Small electronic device capable of switching batteries by releasing a battery locking mechanism |
| 09/10/1992 | DE4107364A1 Starting or switching on no-break current supply - carried out in asynchronous method of operation current supply of auxiliary system realised across inverter output |
| 09/08/1992 | US5145247 Emergency lighting system in an elevator |
| 09/03/1992 | WO1992015143A1 Switching system |
| 09/03/1992 | DE4106557A1 Combined portable and car cassette radio - has additional features to allow use as portable radio in form of telescopic aerial carrying handle and connectors for mains supply |
| 09/02/1992 | EP0501418A2 Low-fall voltage regulator |
| 09/02/1992 | EP0500787A1 Resonant converter having current shunting means |
| 09/02/1992 | EP0500665A1 Uninterruptible power supply. |
| 09/01/1992 | US5144222 Apparatus for controlling the input impedance of a power converter |
| 09/01/1992 | US5144153 Method and apparatus for operating motorized gate upon loss of electrical power thereto |
| 08/25/1992 | US5142215 Low impedance regulator for a battery with reverse overcharge protection |
| 08/25/1992 | US5142165 Power off/on delay circuit to prevent lockout |
| 08/25/1992 | US5142163 High speed load transfer system |
| 08/13/1992 | DE4102727C1 Interference-free changeover circuit for current supply units - has binary signal allocated to failure signal output of first current supply unit |
| 08/12/1992 | WO1992014292A1 Auxiliary power supply system for providing dc power on demand |
| 08/12/1992 | CA2103582A1 Auxiliary power supply system for providing dc power on demand |
| 08/11/1992 | US5138185 Electrical backup interface device having low power output |
| 08/11/1992 | US5138184 Solid state static power transfer mechanism |
| 08/11/1992 | US5138142 Ic card with improved power supply switching circuitry |
| 08/11/1992 | US5136928 Service machine stopping apparatus for midget rotary power shovel |
| 08/04/1992 | US5136229 Power pack device |
| 08/04/1992 | US5136175 Current supply circuit arrangement |
| 08/04/1992 | US5135359 Emergency light and sump pump operating device for dwelling |
| 07/29/1992 | EP0378532B1 Circuit to inhibit voltage and current returns to the electric power distribution line in an inverter-type power plant |
| 07/28/1992 | US5134307 Uninterruptible power supply apparatus and isolating method thereof |
| 07/23/1992 | WO1992012562A1 High speed transfer switch |
| 07/23/1992 | WO1992012475A1 Method and apparatus for controlling the input impedance of a power converter |
| 07/21/1992 | US5132606 Method and apparatus for controlling the input impedance of a power converter |
| 07/14/1992 | CA1305213C Bi-directional d.c.ia.c converter compatible with an inverter bridge |
| 07/09/1992 | WO1992011741A1 Fail-safe uninterruptible lighting system |
| 07/09/1992 | DE4142534A1 Rotary compressor control for refrigerator suitable for vehicle - provides drive by inverter coupled to three=phase induction motor allowing supply from car battery |
| 07/07/1992 | US5128863 Clamping circuit for CMOS-input-type IC and power switching circuit |
| 07/07/1992 | US5128854 Circuit arrangement for supplying a load |
| 07/07/1992 | US5128552 System and method for power supply preservation in a personal health monitor |
| 07/01/1992 | WO1992012563A1 Integral battery charging and supply regulation circuit |
| 07/01/1992 | EP0493305A1 Power source transferring |
| 07/01/1992 | CA2096415A1 Integral battery charging and supply regulation circuit |
| 06/30/1992 | US5126585 Uninterruptible power supplies |
| 06/30/1992 | US5125236 Combined generator set and air conditioning compressor drive system |
| 06/30/1992 | CA1304447C Backup protection switch to prevent reverse power flow in a ups |
| 06/30/1992 | CA1304446C Parallel power systems |
| 06/23/1992 | EP0667019A4 Hand-held data capture system with interchangeable modules. |
| 06/20/1992 | CA2056288A1 Power source transferring |
| 06/17/1992 | EP0490009A1 Device for releasing the automatic opening of a closure system actuated by at least one electric motor |
| 06/09/1992 | US5121288 Capacitive power supply |
| 06/09/1992 | US5121044 Electrical energy system |
| 06/04/1992 | DE4139436A1 Protection device for control microcomputer in motor vehicle - disconnects supply voltage provided by solar cell upon abnormal battery output voltage |
| 06/04/1992 | DE4139011A1 Memory device for automobile engine control microcomputer - has back=up voltage supply for maintaining memory contents upon battery disconnection |
| 06/03/1992 | EP0488108A1 Engine-operated generator system |
| 06/03/1992 | EP0487970A2 Power conversion system, method for controlling the same, and uninterruptible power supply using the same |
| 06/02/1992 | US5119010 Power supply device |
| 06/02/1992 | US5118962 Power supply backup circuit |
| 05/26/1992 | US5117122 Integrated outlet for communication and electrical power transmissions with noise reducing characteristics |
| 05/20/1992 | EP0486130A2 Single phase AC power conversion apparatus |
| 05/05/1992 | US5111059 Power transfer unit for transferring power supplied to a load between power sources responsive to detected scr gate-cathode voltage |
| 05/05/1992 | US5111058 Circuit for sustaining power supply output following momentary interruption of commercial a.c. power |
| 04/23/1992 | DE4134253A1 Emergency power supply circuit especially for timepiece - has load connected tom storage capacitor via decoupling diode, and to voltage regulating transistor |
| 04/22/1992 | CN1060562A A. c. electrical power supply installation with back-up power supply |
| 04/22/1992 | CN1060561A A. c. electrical power supply installation comprising back-up power supply equipped with inverter operating in reversible mode |
| 04/21/1992 | US5107438 Control apparatus for inverter |
| 04/15/1992 | EP0480847A1 AC electric power system with emergency supply |
| 04/15/1992 | EP0480846A1 AC electric power system with emergency supply equipped with an inverter functioning in reversible mode |
| 04/15/1992 | EP0480647A2 Auxiliary battery operation detection circuit |
| 04/13/1992 | WO1992007371A1 Capacitive power supply |
| 04/13/1992 | CA2052535A1 Auxiliary battery operation detection circuit |