| Patents for H02H 7 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions (32,726) |
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| 07/21/1999 | EP0930697A1 A system for controlling a brushless electric motor |
| 07/21/1999 | EP0929925A1 Circuit for controlling a motor with a device for recognising an overload |
| 07/21/1999 | CN2330098Y Inverter |
| 07/21/1999 | CN2330063Y Over-current breaker |
| 07/21/1999 | CN2329977Y Self-testing motor for stator and rotor friction |
| 07/21/1999 | CN1044302C Relay protector |
| 07/20/1999 | US5926383 Integrated protection circuit for a power converter and method of operation thereof |
| 07/20/1999 | US5925996 Garage door operator motor secondary thermal overload |
| 07/20/1999 | US5925995 Electric power steering apparatus |
| 07/15/1999 | WO1999035734A1 Bi-directional motor actuator |
| 07/15/1999 | DE19751676A1 Circuit for identifying clamping events for electric motor driven systems esp. for motor vehicle window lifters and sliding roofs |
| 07/14/1999 | CN2329112Y Voltage regulator for automobile motor |
| 07/14/1999 | CN2329109Y Intelligent protective switch for transformer |
| 07/13/1999 | US5923135 Control apparatus and method for motor to prevent motor drive circuit from being overloaded |
| 07/07/1999 | EP0927447A1 Actuator, in particular an electric motor gear drive system, for moving closure parts operated by extraneous force |
| 07/07/1999 | CN2328120Y Automatic phase-off protector for three phase A.C. motor |
| 07/06/1999 | US5920181 Battery protection system and process for charging a battery |
| 07/06/1999 | US5918982 Temperature detecting using a forward voltage drop across a diode |
| 07/06/1999 | CA2157307C Zero-sequence current suppressor |
| 07/06/1999 | CA2115852C Overvoltage protection circuit |
| 07/01/1999 | WO1999033163A1 Motor controller unit having thermal startup protection |
| 07/01/1999 | WO1999032948A1 Clock line over-current protector and industrial control system |
| 07/01/1999 | WO1999005729A3 Bypass apparatus and method for series connected energy storage devices |
| 07/01/1999 | DE19858768A1 Clamp detector with rotary component and turned component |
| 06/30/1999 | EP0926796A2 Protection apparatus for a storage battery |
| 06/30/1999 | EP0926308A1 Automatic opening/closing apparatus |
| 06/30/1999 | EP0925626A1 Method and arrangement for disconnecting consumers |
| 06/30/1999 | EP0666957B1 Electromotive drive |
| 06/30/1999 | CN2327108Y Sedcondary device of preventing fraudulent use of electricity for transformor |
| 06/30/1999 | CN1221308A Fluorescent tube current-limiting device with abnormal load protector |
| 06/29/1999 | US5917716 Switching mode power supplier having function of protecting circuit from abnormal voltage |
| 06/29/1999 | US5917690 Regulated current power supply with isolated secondary and output current limiting |
| 06/29/1999 | US5917688 Centrifugal apparatus with protection |
| 06/29/1999 | US5917334 Method and apparatus for decoupling a high-frequency error signal from a high-frequency electromagnetic field in a heavy electrical machine |
| 06/29/1999 | US5917299 Motor drive control device |
| 06/26/1999 | CA2256906A1 Protection apparatus for a storage battery |
| 06/24/1999 | DE19857906A1 Procedure for controlling and protecting electric motors used in models, especially of aeroplanes, ships and cars |
| 06/23/1999 | EP0924585A1 Surveillance device for garage door drive |
| 06/23/1999 | EP0923801A1 Phase monitor |
| 06/22/1999 | US5914882 Device for and method of preventing accidents in hand-operated machine tools due to tool jamming |
| 06/22/1999 | US5914586 Overdischarging detection circuit |
| 06/17/1999 | WO1999030409A1 Switched-mode power supply with current and voltage limitation |
| 06/16/1999 | EP0923180A2 Electric installation switch |
| 06/16/1999 | CN2324701Y DC-AC power converter |
| 06/16/1999 | CN2324688Y Phase-defect protector of three-phase electric motor for refrigerating equipment |
| 06/16/1999 | CN2324687Y Outdoor open-phase protection starter for electric machine |
| 06/16/1999 | CN2324686Y Single-phase electric motor protector |
| 06/15/1999 | US5912794 Abnormality detection and protection circuit for semiconductor device |
| 06/15/1999 | US5912546 Battery charger for battery packs |
| 06/09/1999 | EP0921621A2 Hybrid alternator with voltage regulator |
| 06/09/1999 | EP0921618A2 Circuit for controlling an electrical drive unit |
| 06/09/1999 | EP0921550A2 Thermal switch |
| 06/09/1999 | EP0920720A1 Servo motor, in particular electric motor gear drive |
| 06/09/1999 | EP0730791B1 Process for regulating an automatic door operated by a drive motor |
| 06/09/1999 | CN2323512Y Brushless DC motor drive circuit protection arrangement |
| 06/09/1999 | CN2323511Y Speed-regulating and protection arrangement for fractional horsepower DC motor |
| 06/09/1999 | CN1219300A Device and method for protection against overvoltages |
| 06/09/1999 | CN1219026A Reducing power protection circuit for electronic device |
| 06/09/1999 | CN1219014A 漏电截止装置 Drain off device |
| 06/02/1999 | EP0920242A1 Circuit arrangement to protect an electrical component against an electrical potential |
| 06/02/1999 | EP0919450A1 Motor driven power steering device |
| 06/02/1999 | EP0919018A1 Method for the contactless approach of the lower stop position of a motor vehicle window operated by extraneous force |
| 06/02/1999 | EP0815610A4 Battery pack having under-voltage and over-voltage protection |
| 06/02/1999 | DE19819472A1 Monitoring device for oil-filled electrical transformer |
| 06/02/1999 | DE19751470A1 Overvoltage protection device for electrical apparatus connected to power line |
| 06/02/1999 | CN2322320Y All automatic tracking electricity-saving device for motor |
| 06/02/1999 | CN2322299Y Quick overvoltage protector for constant-current high-voltage dc power source |
| 06/02/1999 | CN1218551A Methods and apparatus for detecting surge in centrifugal compressors |
| 06/01/1999 | US5909135 High-side MOSFET gate protection shunt circuit |
| 06/01/1999 | US5909104 Electrostatic enhanced lithium battery circuit |
| 05/27/1999 | WO1999025483A1 Spray gun power supply unit monitor |
| 05/27/1999 | DE19854181A1 Slide contact fastening method |
| 05/26/1999 | EP0918345A1 Thermal switch assembly |
| 05/26/1999 | EP0917759A1 Device and method for protection against overvoltages |
| 05/26/1999 | EP0917753A1 A device for supervising in a high voltage converter station |
| 05/26/1999 | CN2321155Y Lightening arrester for electronic equipment |
| 05/26/1999 | CN2321153Y Maintenance-free communication line facility protector |
| 05/26/1999 | CN2321152Y Motor protector |
| 05/25/1999 | US5907463 For a switching mode power supply |
| 05/25/1999 | CA2160173C Ground fault detecting apparatus and method for detecting ground fault of field circuit and exciting circuit by detecting ground fault current flowing from ground to neutral pointof exciting circuit |
| 05/24/1999 | CA2254202A1 Thermal switch |
| 05/24/1999 | CA2252245A1 Thermal switch assembly |
| 05/20/1999 | WO1999025049A1 Load indicator |
| 05/20/1999 | DE19749558A1 Overvoltage limiter for semiconductor switch(es) |
| 05/19/1999 | EP0917300A2 A branching unit for an underwater communications system |
| 05/19/1999 | EP0916176A1 Coaxial surge protector having thermal fail-safe shunt |
| 05/19/1999 | CN2319946Y Delayed cut-off protector of computer power source |
| 05/19/1999 | CN2319945Y Multifunctional electronic protector of motor |
| 05/19/1999 | CN2319944Y Excitation current symmetrical recognition protector of transformer |
| 05/18/1999 | US5905645 Thermally aided power sharing of power supplies with or without an external current share line |
| 05/18/1999 | US5905616 Load selectivity system for use with electronic trip circuit breakers |
| 05/18/1999 | US5905615 Electric power distribution system with automatic protection breakers and related method |
| 05/12/1999 | EP0915550A1 Electric motor with means for preventing thermal overload |
| 05/12/1999 | EP0915549A2 Flow device |
| 05/12/1999 | EP0915548A2 Rectifier device with protective circuit and method for switching off a rectifier device |
| 05/12/1999 | EP0914705A2 Overvoltage protection circuit for smps based on demagnetization signal |
| 05/12/1999 | EP0850502B1 Circuit configuration to detect excess temperature due to current flow |
| 05/12/1999 | CN2318751Y Control device for crystall brake pipe medium frequency power source |
| 05/12/1999 | CN2318744Y Open-phase protector for three-phase AC. machine |
| 05/12/1999 | CN2318743Y Automatic protector for transformer |