Patents for H02P 7 - Arrangements for regulating or controlling the speed or torque of electric dc-motors (10,217)
10/1984
10/23/1984US4479079 Apparatus for varying the speed of DC motors
10/23/1984US4479077 Sewing machine with a universal motor
10/17/1984EP0121723A1 Firing angle control system
10/16/1984US4477752 Speed control apparatus for DC motor
10/16/1984US4477751 Motor brake device
10/11/1984WO1984004007A1 Control circuit for a motor
10/09/1984US4476417 Control arrangement for a static converter
10/09/1984US4476416 Power window control for motor vehicle window
10/03/1984EP0120538A1 Device to supply power to a direct current motor by means of a rectified alternating current, and overcurrent protection
10/02/1984US4475073 Proportional plus integral servo-reversible speed control
10/02/1984US4475071 Speed control apparatus for d.c. motor
10/02/1984US4475070 Motor torque control with improved linearity
09/1984
09/25/1984US4473784 Power control circuit
09/25/1984US4473743 Motor drive lens shifting system for use in autofocus camera
09/19/1984EP0119049A2 Servomotor controls
09/11/1984US4471281 Digital control device
09/11/1984US4471280 Anti-log power amplifier for reversible D.C. motor in automotive steering controls
09/11/1984US4471278 Bang-bang current regulator having extended range of regulation
09/11/1984US4471277 Vehicle propulsion motor control apparatus
09/11/1984US4471276 Electric motor speed controller and method
09/11/1984US4471275 Motor driven drapery closure and control circuit combination
09/11/1984CA1174270A1 Method for regulating the power supply to a direct- current motor and a device for the application of said method
09/04/1984US4470078 Pulse driven control circuit for moving a transducer across a rotary recording medium of pulses applied thereto
09/04/1984US4469999 Regenerative drive control
09/04/1984US4469053 Automotive electric fan controlling device
08/1984
08/29/1984EP0116912A1 Method of controlling motor speed
08/29/1984EP0116831A1 Electric control device for a roller drive motor of a pipe rolling mill
08/29/1984EP0027129B1 D.c. motor speed control circuit
08/28/1984US4468724 Method and apparatus for controlling load current
08/28/1984US4468599 Plug current regulator
08/28/1984US4468597 Method for regulating the power supply to a direct-current motor and a device for the application of said method
08/28/1984CA1173503A1 Direct current control in inductive loads
08/28/1984CA1173494A1 Speed control for truck
08/22/1984EP0116213A1 Dual voltage motor vehicle electrical system
08/22/1984EP0035491B1 Directional control system
08/21/1984US4467408 Means for controlling a forced commutated ac-to-dc electric rectifying circuit to avoid commutation failure
08/21/1984US4467250 Electric motor controls for mechanical actuators
08/14/1984US4465958 Motor speed control circuit
08/14/1984US4465351 Motor-operated film driving device for camera
08/01/1984EP0114285A2 Disexcitation circuit for motors of vehicles and method of rapid disexcitation and rapid transfer to normal operation
07/1984
07/31/1984US4463296 Vehicle motor driving circuit
07/24/1984US4461988 Apparatus for controlling an electrical vehicle drive system
07/24/1984CA1171454A1 Energy saving motor speed controller
07/18/1984EP0113341A1 Windshield wiper control system.
07/17/1984US4460854 Control device for a vibrating armature motor
07/17/1984CA1171132A1 Digital dc motor speed control circuit
07/10/1984US4459675 Printer control system with error count averaging
07/10/1984US4459523 Motor speed control
07/10/1984US4459521 Control box for a driving motor of a slidable panel of a vehicle, in particular for a window raiser
07/03/1984US4458286 Electronic device having a high voltage breakdown protection circuit
07/03/1984US4458186 Transistor control device for power transistor chopper
07/03/1984US4458183 DC Motor control
06/1984
06/26/1984US4456920 Semiconductor device
06/20/1984EP0111068A1 Stepping motor driving circuit
06/19/1984CA1169483A1 Constant speed electric motor
06/12/1984US4454573 Current regulator circuit
06/12/1984US4454455 Fault responsive means for changing control sequence of a multiple-bridge electric power converter
06/12/1984US4454454 MOSFET "H" Switch circuit for a DC motor
06/05/1984US4453115 DC Motor control system
06/05/1984US4453111 Electric drive for submarines
06/05/1984US4452341 Load change responsive elevator speed control apparatus
05/1984
05/22/1984US4450392 Electronic speed regulator for a d.c. motor
05/22/1984CA1167706A1 Electric outboard motor construction
05/15/1984US4449082 Motor speed control system
05/15/1984US4449077 Chopper control equipment for electric railcars
05/15/1984CA1167515A1 Solid state servo amplifier for a d.c. motor position control system
05/08/1984US4447768 Motor control device
05/08/1984US4447767 SCR Motor speed control
05/02/1984EP0107537A1 Control circuit for a drive motor of a movable element of a motor vehicle
05/02/1984EP0007901B1 Control system for a d.c. motor
05/01/1984US4446416 Polyphase electric machine having controlled magnetic flux density
04/1984
04/24/1984US4445075 Valve actuators
04/18/1984EP0105497A1 Electric car control system
04/18/1984EP0105296A1 Control circuit for the driving of a sliding part of a motor vehicle, particularly a window pane of a motor vehicle.
04/17/1984US4443750 Energy saving motor speed controller
04/17/1984US4443745 Rotation signal detection device of DC motor with brushes
04/17/1984US4443744 Method and apparatus for charge enhancement of a commutating capacitor
04/04/1984EP0104851A1 Bi-directional driver system for electrical load
04/03/1984US4441061 Motor speed control system
03/1984
03/28/1984EP0104029A2 Control system for an electric motor
03/27/1984US4439806 Short-circuit protection device for a DC control element
03/21/1984EP0103215A1 Motor speed control apparatus
03/21/1984EP0103133A1 Regulating device for current converters
03/21/1984EP0008571B1 Control circuit for a d.c. motor
03/20/1984US4438378 Motor drive apparatus
03/20/1984CA1164040A1 Speed control of a d.c. electric motor
03/14/1984EP0102589A2 Tension control device for a shaft winder
03/13/1984CA1163665A1 Polyphase electric machine having controlled magnetic flux density
03/06/1984CA1163316A1 Three phase power factor controller
02/1984
02/22/1984EP0100852A1 Circuit arrangement for rising and lowering a motor-operated antenna
02/21/1984US4433370 Multiple phase chopper current limiting
02/21/1984CA1162603A1 Pneumatic device to control the speed of an electric motor
02/21/1984CA1162602A1 Control system for multiple speed motor
02/07/1984US4430682 Protection circuit for d.c. motors
02/07/1984US4430604 Rectifier switch for electric lawn mowers
02/02/1984WO1984000450A1 Windshield wiper control system
01/1984
01/31/1984CA1161494A1 D.c. motor with angular rotor position sensor
01/31/1984CA1161493A1 Dc motor control using motor-generator set with controlled generator field
01/24/1984US4427931 Speed control apparatus for direct current motor
01/24/1984US4427930 Electric vehicle current regulator