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)
06/1985
06/04/1985CA1188361A1 Voltage regulation and battery dissipation limiter circuit
05/1985
05/29/1985EP0142679A2 Airflow control apparatus
05/28/1985US4519683 Electronic flash apparatus
05/28/1985CA1188002A1 Mos battery backup controller for microcomputer random access memory
05/23/1985WO1985002301A1 Method and device for supplying in emergency conditions a system from the mains
05/21/1985CA1187608A1 Current generating device, especially for the protection of volatile rams
05/14/1985US4517470 High frequency inverter
05/14/1985US4516665 Elevator control system
05/07/1985US4516035 Phase synchronization and control circuit
04/1985
04/25/1985WO1985001842A1 Uninterruptible power supply and line conditioner
04/09/1985US4510401 Processes and devices for providing a load with an electric AC supply without discontinuity of the AC signal
04/02/1985US4508974 Emergency power system and logic therefor
03/1985
03/14/1985WO1985001162A1 Inverter for uninterruptible power supply
03/14/1985WO1985001157A1 Control circuit for uninterruptible power supply
03/14/1985WO1985001021A1 Uninterruptible power system
03/05/1985US4502287 Refrigeration system alarm device
01/1985
01/29/1985US4496168 Current supply circuit for electronic safety ski bindings
01/29/1985CA1181807A1 Standby a-c power system with transfer compensation circuitry
01/23/1985EP0132022A2 AC uninterruptible power system
01/08/1985US4493001 Motor vehicle battery rundown protection system
01/08/1985US4492876 Power supply switching arrangement
12/1984
12/12/1984EP0127742A1 Power supply
12/11/1984US4488058 Snubber circuit for use in an uninterruptible power supply
12/11/1984US4488057 AC-DC Switching regulator uninterruptible power supply
12/04/1984US4486759 Electronic equipment
12/04/1984CA1179004A1 Energy distribution device
11/1984
11/27/1984US4485456 Data processor with R/W memory write inhibit signal
11/27/1984US4484664 Emergency drive device for an A.C. elevator
11/20/1984US4484084 Power MOSFET transfer switch
11/13/1984CA1177912A1 Mos comparator circuit
11/13/1984CA1177889A1 Motor-generator system providing prolonged uninterrupted power supply to a load
11/13/1984CA1177888A1 Greatly prolonged period non-interruptible power supply system
11/07/1984EP0030980B1 Stabilized dc power source
10/1984
10/23/1984US4478315 Apparatus for operating an AC power elevator
10/03/1984EP0120146A1 An apparatus for emergency supply of an electrically driven tool
10/02/1984US4475047 Uninterruptible power supplies
09/1984
09/27/1984WO1984003805A1 Ac voltage stabilizer easily convertible into uninterruptible power supply (ups)
09/25/1984US4473756 AC Uninterruptible power system
09/19/1984EP0118966A1 AC voltage stabilizer easily convertible into uninterruptible power supply (UPS)
09/11/1984US4471233 Emergency power system
09/04/1984US4469990 Electronic flash device
09/04/1984CA1173902A1 Standby power unit
08/1984
08/30/1984WO1984003402A1 Method for producing alternating current from direct current
08/30/1984WO1984003400A1 Redundant multiple channel electric motors and generators
08/28/1984US4468571 Standby power system
08/28/1984CA1173499A1 Power supply inverter controls
08/14/1984US4465943 Uninterrupted power system with frequency and phase control
07/1984
07/31/1984US4463270 MOS Comparator circuit
07/17/1984US4461003 Circuit arrangement for preventing a microcomputer from malfunctioning
07/17/1984US4460834 Uninterruptible power system
06/1984
06/19/1984US4455523 Portable battery powered system
06/13/1984EP0110775A1 Low drop-out voltage regulator
06/12/1984US4454452 Emergency lighting system
06/12/1984CA1169124A1 Continuously operating standby a-c power system
05/1984
05/29/1984US4451762 Control circuit and system for providing emergency lighting
05/09/1984EP0107803A1 Current source circuit arrangement for an uninterruptible DC supply
05/08/1984CA1167153A1 System for transferring a load between two power sources without interruption of power to the load
05/01/1984CA1166689A1 "masterless" power supply arrangement
04/1984
04/10/1984US4442385 Variable frequency drive for a motor-generator/alternator set
04/03/1984US4441031 Power source voltage change discrimination circuit
03/1984
03/20/1984US4438431 Electronic device having warning means
02/1984
02/28/1984US4434395 Solar cell power supply circuit
02/21/1984US4433250 Power supply control apparatus
02/14/1984CA1162245A1 Selective calling receiver including a voltage converter with low power consumption
01/1984
01/24/1984US4427899 Circuit arrangement for securing the supply voltage supply of an electronic load
01/17/1984US4426587 Power supply distribution system
12/1983
12/27/1983US4423364 Electric motor damper drive with backup power pack
12/27/1983US4423336 Electromechanically controlled automatic transfer switch and bypass switch assembly
12/27/1983CA1159573A1 Power failure memory support system
12/06/1983US4419588 Security electrical power distribution systems for light aircraft equipped for flight on instruments
11/1983
11/15/1983CA1157090A1 Method of uninterrupted operation of a current supply installation and apparatus for the method
10/1983
10/25/1983US4412170 Motor-generator system providing prolonged uninterrupted power supply to a load
10/18/1983US4410935 Current overload protection for inverter of uninterruptible power supply system
10/18/1983US4410807 Regulating device for polyphase electrical circuits
10/12/1983EP0091281A2 Circuit arrangement for detecting restoration of a momentary interruption
10/12/1983EP0091197A1 Condition responsive control system
10/11/1983US4409635 Electrical power system with fault tolerant control unit
10/05/1983EP0090412A2 Current-generating device, particularly for preserving volatile random access memories
10/04/1983CA1154848A1 Bypass isolation system for transfer switch with mechanical interlock
10/04/1983CA1154823A1 Method and apparatus for controlling inverters in parallel operation
09/1983
09/28/1983EP0089544A1 Uninterrupted power supply
09/27/1983US4406950 Greatly prolonged period non-interruptible power supply system
09/27/1983CA1154538A1 Battery backup circuit for an integrated memory device
09/21/1983EP0089048A2 Circuit for detecting and memorising defects in power supply systems
09/20/1983US4405867 System for transferring a load between two power sources without interruption of power to the load
08/1983
08/30/1983US4401895 Supply for providing uninterruptible d-c power to a load
08/30/1983US4401894 Automatic uninterrupted D.C. power source switch
08/23/1983US4400661 Voltage regulation and battery dissipation limiter circuit
08/23/1983US4400626 Power distribution system with means for sensing emergency condition and reducing standby power
08/23/1983US4400625 Standby A-C power system with transfer compensation circuitry
08/23/1983US4400624 Uninterruptible power supplies
08/16/1983US4399524 Memory protection system
08/16/1983US4399396 Two level constant voltage float charge rectifier and battery surveillance apparatus
08/16/1983CA1152154A1 Protected converter arrangement
08/16/1983CA1152153A1 Uninterruptible power supply with load regulation of standby voltage source
08/09/1983US4398098 Electronic latching circuit
08/09/1983US4398097 Automatic transfer switch
08/09/1983CA1151721A1 Power supply for a high density discharge or fluorescent lamp
07/1983
07/26/1983US4395639 Uninterruptible power supply with battery back-up
06/1983
06/28/1983CA1149017A1 Rectifier system with failure alarm circuitry
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