| Patents for H02P 7 - Arrangements for regulating or controlling the speed or torque of electric dc-motors (10,217) |
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| 05/23/1990 | EP0369954A1 Multipurpose, internally configurable integrated circuit for driving in a switching mode external inductive loads according to a selectable connection scheme |
| 05/15/1990 | US4926354 Power controller with low standby current drain |
| 05/15/1990 | US4926101 DC motor stop detector and DC motor brake apparatus |
| 05/15/1990 | CA1269154A1 Motor control circuit for motor driven power windows |
| 05/14/1990 | EP0318530A4 An apparatus for interactively accelerating an electric drive vehicle. |
| 05/09/1990 | CN1007950B Torque determination for control of an induction motor apparatus |
| 05/08/1990 | US4924166 Circuit for shaping and making use of armature current ripple as generated by a D.C. motor, in particular for position control |
| 05/08/1990 | US4924158 Motor driver protection circuit |
| 05/08/1990 | US4924154 Reversible motor drive control circuit |
| 05/03/1990 | DE3940849A1 Reversible variable speed electric motor - uses polarity reversal switch operated by setting potentiometer |
| 05/02/1990 | EP0366620A1 A circuit for controlling a direct-current motor |
| 05/02/1990 | EP0366521A1 Electric DC motor power supply device, especially for a motor vehicle sliding roof |
| 05/02/1990 | CN2056796U Thyristor exciting voltage regulator |
| 05/01/1990 | US4921083 Clutch module with predetermined torque |
| 04/18/1990 | CN1041494A Microcomputer controlled frequency-changing speed regulator of asynchronous machine |
| 04/18/1990 | CN1007689B Printer-driving motor and its control device |
| 04/17/1990 | US4918367 Method for controlling the torque of an ac motor |
| 03/29/1990 | DE3932272A1 Einrichtung zur steuerung und regelung der drehgeschwindigkeit eines gleichstrom-elektromotors, insbesondere fuer ein elektrisches geblaese einer klimaanlage eines kraftfahrzeugs Means for control and regulation of the rotating speed of a dc electric motors, in particular for an electric fan an air conditioner of a motor vehicle |
| 03/28/1990 | EP0360645A1 A safety device for video cassette recorder |
| 03/20/1990 | US4910447 Pulse width modulator motor control |
| 03/20/1990 | US4910445 Actuating device for movable parts for closing of apertures in vehicles and vehicle roof utilizing same |
| 03/20/1990 | US4910443 Electronic control circuit for a bidirectional motor |
| 03/14/1990 | EP0358590A1 Actuator two-fault tolerance apparatus |
| 03/08/1990 | WO1990002063A1 Drive, in particular for windscreen wiper systems in motor vehicles |
| 03/07/1990 | EP0356791A1 Drive system, in particular for motor vehicle windscreen wiper installations |
| 02/28/1990 | CN1007027B Self-oscillating power-supply circuit |
| 02/22/1990 | DE3827882A1 Arrangement for the drive of an actuator as a function of setting direction and travel |
| 02/21/1990 | CN2053404U Controller for dc motor |
| 02/21/1990 | CN2053403U Electric hauling machine for driller |
| 02/21/1990 | CN1006947B Arrangement for controlling motor speed |
| 02/14/1990 | CN1039686A Invertible thyristor speed-regulating device of dc motor |
| 02/13/1990 | US4901366 Circuit arrangement for the timed control of semiconductor switches |
| 02/13/1990 | US4900966 Protection switch for vehicle dc window motor |
| 02/07/1990 | EP0354098A1 Circuit to control the variation of power with several power transistors in parallel |
| 02/06/1990 | US4899097 Electronic valve actuator system |
| 01/31/1990 | EP0352728A2 DC motor stop detector and DC motor brake apparatus |
| 01/31/1990 | EP0352397A1 Speed control device for pulse width-modulated electric motors, especially for direct current motors |
| 01/30/1990 | US4897778 Motor control device |
| 01/23/1990 | US4896084 Single input, single supply three-state controller |
| 01/23/1990 | CA1264802A1 Motor control method and apparatus therefor |
| 01/23/1990 | CA1264771A1 Control system for roller-blinds or the like with swivel blades |
| 01/09/1990 | US4893067 Direct current motor speed control |
| 01/03/1990 | CN2050665U Microcomputor chopped wave control of accumulator fork lift truck |
| 12/27/1989 | CN1006268B 逆变器 Inverter |
| 12/26/1989 | US4890185 Circuit for protecting a switching transistor |
| 12/14/1989 | WO1989011816A1 Battery-operated surface treatment apparatus having a booster function |
| 12/12/1989 | CA1263884A1 Control system for reversing the rotation of a field wound motor |
| 12/06/1989 | EP0344370A1 Controlling an alternating current motor particularly at low speeds |
| 11/30/1989 | DE3817936A1 Verfahren zur feldschwaechung von reihenschlussmaschinen in elektrisch betriebenen fahrzeugen Method for feldschwaechung series of statements machines in electrically operated vehicles |
| 11/30/1989 | DE3816903A1 Method and arrangement for analog/digital conversion |
| 11/29/1989 | EP0343428A1 Semiconductor bridge circuit |
| 11/28/1989 | US4884183 Dual-mode controlled pulse width modulator |
| 11/22/1989 | CN2048263U Speed regulator of power operatcd vehicle with current limiting proportion by magnet |
| 11/15/1989 | CN2047861U Automatic controller for dc motor |
| 11/09/1989 | DE3810693A1 Method and control device for controlling the rotation speed of electric motors |
| 11/07/1989 | US4879754 Speed controller |
| 11/07/1989 | US4879641 Analog multiplex for sensing the magnitude and sense of the current through a h-bridge stage utilizing a single sensing resistance |
| 10/31/1989 | US4878000 Improved trigger-type control switch for D.C. motors |
| 10/24/1989 | US4876493 Motor controlling switch device |
| 10/19/1989 | WO1989010030A1 Actuator and communication system |
| 10/19/1989 | DE3811799A1 Circuit arrangement for bidirectional control of DC motors or DC chopper converters (controllers) |
| 10/19/1989 | DE3811624A1 Circuit arrangement for controlling a bridge output stage |
| 10/18/1989 | EP0337550A1 Integrated circuit comprising complementary MOS transistors |
| 10/18/1989 | CN2046291U Mixing type d.c. pulse-amplitude modulator |
| 10/18/1989 | CN1036488A Pulse-synchronizing speed-regulated dc motor |
| 10/18/1989 | CN1036482A Circuit arrangement for protecting switch transistor |
| 10/11/1989 | CN2045913U Energy-saving speed regulator for direct-current dynamo |
| 10/10/1989 | US4873478 Method and apparatus for controlling an alternating current motor particularly at low speeds |
| 10/10/1989 | US4873473 Modular motor controller |
| 10/10/1989 | US4873453 DC motor speed controller having protection |
| 10/05/1989 | WO1989009511A1 Digital motor control system |
| 10/05/1989 | DE3809621A1 Method for the field current control and field weakening control of an excitation winding of a separately excited D.C. machine and circuit layout for implementing the method |
| 10/03/1989 | US4872123 Commutation compensation device for a DC machine |
| 10/03/1989 | US4871952 Motor speed control apparatus |
| 09/27/1989 | CN1035921A Chopper speed governing device of the microcomputer control |
| 09/26/1989 | CA1260057A1 Motor control apparatus |
| 09/20/1989 | EP0333572A1 Formatting and utilisation device for induced waves generated by a DC motor, especially for position control |
| 09/20/1989 | CN1005230B Solid d.c. motor controller |
| 09/12/1989 | US4866356 Circuit for controlling the speed of a subfractional horsepower DC motor |
| 09/08/1989 | WO1989008349A1 Two-state, bilateral, single-pole, double-throw, half-bridge power-switching apparatus and power supply means for such electronic power switching apparatus |
| 09/06/1989 | EP0331259A1 Control circuit for a permanent magnet or constant excitation direct current motor, particularly for washing machines |
| 09/06/1989 | CN1035400A Gate-controlled electric drive |
| 09/06/1989 | CN1035399A Electic drive apparatus with practical electric brake |
| 08/29/1989 | US4862046 Zoom motor control |
| 08/23/1989 | EP0328838A1 Control device for a DC motor, especially one for the control of openings in a vehicle |
| 08/22/1989 | US4859924 Inverter |
| 08/22/1989 | US4859918 Method and apparatus for producing a speed control voltage for direct current motors in typewriters or similar office machines |
| 08/22/1989 | US4859916 H-driver |
| 08/15/1989 | US4857815 Switch for energizing an electric motor of a wiper system |
| 08/08/1989 | US4856078 DC fan speed control |
| 07/25/1989 | US4851869 Lens driving apparatus |
| 07/25/1989 | US4851753 Proportional motor control circuit |
| 07/25/1989 | US4851744 Feedback circuitry for D.C. motor speed control |
| 07/25/1989 | US4851743 DC motor speed controller having protection |
| 07/25/1989 | US4851742 Compartment panel control apparatus for a motor vehicle |
| 07/19/1989 | EP0324614A1 Motor control fail-safe circuit |
| 07/18/1989 | US4849651 Two-state, bilateral, single-pole, double-throw, half-bridge power-switching apparatus and power supply means for such electronic power switching apparatus |
| 07/05/1989 | CN2040680U Electromagnetic speed adjusting electric machinery controller |
| 07/04/1989 | US4845413 Device for controlling the field current of DC motors |
| 06/28/1989 | EP0321663A2 Protection circuitry for a commutating transistor |