Patents
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)
07/1996
07/23/1996US5539299 Protection switch for a battery powered device
07/23/1996US5539290 Automatic venting system for a vehicle with obstruction detection utilizing dynamically modified thresholds
07/23/1996US5537834 Inductively activated control and protection circuit for refrigeration systems
07/18/1996DE19600047A1 Control unit for stabilised operation of a retractable road vehicle aerial
07/18/1996DE19502059A1 Differential current protection system for single-phase transformer
07/18/1996DE19502016C1 Over-current protection for DC motor pulse width modulation regulator
07/17/1996EP0721695A1 Electric motor with torque detecting means
07/17/1996EP0721686A1 Method and device for measuring and recreating the load current in a power network in connection with the occurrence of faults
07/16/1996US5537015 Semiconductor circuit for a DC motor
07/16/1996US5537013 Control apparatus for power window
07/11/1996DE19514257C1 Method of monitoring motion of objects with motorised adjustment, esp. motor car windows and sun roofs
07/10/1996EP0720782A1 A drive assembly for power operated doors
07/10/1996CN2230989Y Electric motor protector
07/09/1996US5535082 Turn-on control circuit for electric devices
07/09/1996US5534854 Fan failure alert for electronic equipment
07/09/1996US5534853 Electronic apparatus for measuring the parameters of an oil transformer
07/09/1996US5534833 Circuit breaker remote closing operator
07/09/1996US5534760 Compressor control circuit
07/03/1996EP0720270A2 Low-side bidirectional battery disconnect switch
07/03/1996EP0720269A1 Stop control device for single-phase asynchronous motor with capacitor
07/03/1996EP0720268A1 Stop control device for single-phase asynchronous motor with capacitor
07/03/1996EP0720267A1 Semiconductor electronic circuit with overvoltage protection device
07/03/1996EP0720266A1 Process and device for temperature monitoring of a universal motor
07/03/1996EP0720239A2 An optically coupled device
07/02/1996US5532894 Overvoltage protection circuit
07/02/1996US5532638 Superconducting energy storage apparatus
07/02/1996US5532574 Brushless exciter protection circuit
07/02/1996CA2051030C Semiconductor power conversion system having a multiphase bridge circuit
06/1996
06/27/1996WO1996019859A1 Overcurrent feed preventing device
06/27/1996WO1996019858A1 Circuit and process for operating an adjusting drive
06/27/1996WO1996019857A1 Circuit for detecting overload in an adjusting drive
06/26/1996EP0717885A1 Safety device for moving parts
06/26/1996CN2230064Y Energy-saving control device for ac asynchronous motor
06/26/1996CN1125496A Hybrid alternator with voltage regulator
06/25/1996US5530788 Electric motor drive control apparatus
06/25/1996US5530329 Drive control device for opening/closing member
06/20/1996WO1996019039A1 Vehicle based ac power system
06/20/1996DE4445106A1 Schaltungsanordnung zum Detektieren eines Überlastzustands in einem Verstellantrieb Circuit arrangement for detecting an overload condition in an adjusting
06/20/1996DE4444762A1 Schaltungsanordnung und Verfahren zum Betreiben eines Verstellantriebs Circuit arrangement and method for operating an adjusting drive
06/19/1996EP0717498A1 A circuit for detecting a short circuit in a low side driven load
06/19/1996EP0716781A1 Device for operating a power consumer in a vehicle
06/19/1996CN2229729Y Intelligent crystal thyratron trigger plate
06/19/1996CN2229724Y Phase-faulty and phase interruption full-protector
06/19/1996CN2229723Y Phase loss and phase-sequence protection relay
06/19/1996CN2229722Y Protector for short circuit
06/19/1996CN1124880A Multifunctional controlled cabinet for load shunting switch
06/19/1996CN1124874A Integrated protector for program-controlled high-voltage switch
06/18/1996US5528444 Automatic overvoltage protection for an alternator in a locomotive propulsion system
06/16/1996CA2165226A1 Circuit for detecting a short circuit in a low side driven load
06/13/1996WO1996018229A1 Circuit breaker with an electronic trip element and a bypass circuit
06/13/1996WO1996018017A1 A safety device for an electrically operated window
06/12/1996EP0716492A1 Electric motor control device
06/12/1996EP0716214A2 Method and device for controlling the stopping of electric motor driven roller shutters or the like
06/12/1996CN2229113Y Universal phase interruption protector for three-phase motor
06/11/1996US5526215 Secondary cell protection unit for protecting a secondary cell from overdischarge or overcharge without excessive power consumption
06/11/1996US5525881 Method and apparatus for the thermal control of an electric motor in a vehicle, and their application to a power assisted steering system
06/11/1996US5525878 Apparatus and method for controlling an electric motor
06/11/1996US5525876 Safety cutoff power window control device
06/11/1996US5525856 Light irradiation device
06/11/1996US5524448 Minimum off-time device for protecting refrigeration compressors after a power interruption
06/05/1996EP0715328A1 Protective device
06/05/1996EP0714568A1 Device for driving a power controlling element of a vehicle driving unit
06/05/1996EP0714565A1 Arrangement for detecting stator earth leakages in three-phase current machines
06/05/1996DE4444551A1 Current transformer disconnection terminal
06/05/1996CN1123972A Current limiter for voltage/frequency type inverter
06/04/1996US5523938 Differential current fault protection for an AC/DC hybrid system and method therefor
06/04/1996US5523653 Lighting apparatus with improved current overload protection circuit
06/04/1996US5523631 Control system for powering plural inductive loads from a single inverter source
05/1996
05/30/1996WO1996016476A1 High speed overvoltage detection and protection circuit
05/29/1996EP0714052A2 Method for monitoring the opening and closing process in a system with at least one electric motor driven part
05/29/1996EP0713580A1 Process and device for monitoring the temperature of an electric generator
05/28/1996US5521474 Method for monitoring movable elements
05/28/1996US5521473 Apparatus for driving and controlling power window while prohibiting drive of the motor during an initial period
05/23/1996WO1996015571A1 Circuit arrangement
05/23/1996WO1996015570A1 Protection system for a shorted rectifying diode within a synchronous generator
05/23/1996DE4441575A1 Vorrichtung und Verfahren zum schnellen Entladen einer supraleitenden Magnetspule Apparatus and method for rapidly discharging a superconducting magnet coil
05/22/1996EP0713280A2 Electronically commutated motor
05/22/1996EP0713228A1 Current limiting device
05/22/1996EP0713163A1 Protection circuit and method for power transistors, voltage regulator using the same
05/22/1996EP0521912B1 Arcing fault detector
05/22/1996CN1122963A DC power supply circuit
05/21/1996US5519563 Protection circuit for electric cells from overcharge and overdischarge using a plurality of detection units of a single chip type
05/21/1996US5519295 Electrically operated actuator having a capacitor storing energy for returning the actuator to a preferred position upon power failure
05/15/1996EP0712007A2 Battery operated electric razor or hair clippers
05/15/1996EP0657090B1 Automatic zero-point recognition
05/14/1996US5517396 Power supply apparatus having AC-DC converter
05/09/1996WO1996013890A1 Protection switch for a battery powered device
05/08/1996CN1122173A Process for regulating an automatic door operated by a drive motor
05/07/1996US5515231 Thyristor valve arrester and DC power transmission thyristor valve using the same
05/07/1996US5515229 Overcurrent protector with overheat prevention means
05/07/1996US5515225 Integrated circuit protected against electrostatic overvoltages
05/07/1996US5514940 Control device for an electrically powered foldable rearview mirror for automobiles
05/02/1996WO1996013091A1 Transient suppressor for electronics systems
05/02/1996WO1996013090A1 Detection and isolation circuit for a failed bridge power rectifier and an electrical system employing same
05/02/1996DE4438592A1 Thyristor short-circuiter for quenching interference arcs in LV power-thyristor type switching systems
05/02/1996DE19539925A1 Servo-drive arrangement for opening and closing motor vehicle window
05/01/1996CN2226350Y Automatic phase interruption protector for three-phase motor
05/01/1996CN2226349Y No-load monitor for motor
04/1996
04/30/1996US5513061 Apparatus and method for distributing electrical power
04/30/1996US5513058 DC link circuit for an electronically commutated motor