| Patents for H02P 7 - Arrangements for regulating or controlling the speed or torque of electric dc-motors (10,217) |
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| 10/17/1991 | WO1990008996A3 Method and apparatus for dc motor speed control |
| 10/15/1991 | US5057757 DC motor control in electronic sewing machine |
| 10/15/1991 | US5057720 Output buffering H-bridge circuit |
| 10/08/1991 | CA1290386C Fault current limiter for a dc motor drive system |
| 10/02/1991 | EP0449543A1 Digital pulse-width-modulation generator for current control |
| 09/26/1991 | DE4009402A1 Battery-powdered machine tool with two-pole switch |
| 09/25/1991 | EP0448505A2 Battery driven device |
| 09/25/1991 | EP0447422A1 A linkage system for loading machines. |
| 09/25/1991 | CN1054816A Multifunctional controller for electric fan without interference |
| 09/24/1991 | US5051670 Aircraft DC starter-generator torque controller |
| 09/24/1991 | CA1289616C Electronic control circuits |
| 09/19/1991 | WO1991014327A1 Circuits for the separate potential transmission of pulses of any length or frequency for driving transitor circuits |
| 09/18/1991 | CN1054690A Vector analysing microcomputer control system of double-feedback motor |
| 09/17/1991 | CA1289186C Control circuit for an electrical printing-press drive motor or similar |
| 09/11/1991 | EP0314681B1 Final stage of a bridge circuit |
| 09/10/1991 | US5048115 Speed control unit for direct current electric motor with intrinsic feed-back |
| 09/04/1991 | EP0445015A1 Speed commutation device for an electric motor |
| 09/04/1991 | EP0444757A2 Power on/off circuit with lock function |
| 09/04/1991 | CN1054296A Operation control circuit for pump motor |
| 09/03/1991 | US5045766 Excitation device for electromagnetic actuator |
| 08/28/1991 | EP0443585A2 Apparatus and process for controlling an inverter operation |
| 08/28/1991 | EP0443032A1 Power supply control apparatus of inductance load |
| 08/28/1991 | CN1054150A Liquid or gas controlled stepless speed governing motor unit and the speed-governing method thereof |
| 08/27/1991 | US5043640 Model car |
| 08/27/1991 | US5042627 Electric control apparatus for clutch mechanism |
| 08/22/1991 | DE4005255A1 Electronic throttle control for IC engine - has circuitry allowing learning process by measurement of drive pulse length at limit stop position |
| 08/21/1991 | CN1053976A Plane floatation electric motor and microprocessor control thereof |
| 08/14/1991 | EP0441459A1 Pulse-width modulation drive circuit |
| 08/13/1991 | US5040235 Battery powered motor speed control apparatus |
| 08/13/1991 | US5040088 Electric motor controllers |
| 08/13/1991 | US5039924 Traction motor optimizing system for forklift vehicles |
| 08/07/1991 | EP0439990A1 Method and device for determining the optimal exitation value which minimizes the eletromagnetic losses of electric machines |
| 08/06/1991 | US5038247 Method and apparatus for inductive load control with current simulation |
| 07/24/1991 | CN1053328A Three-phase magnetic resistance motor |
| 07/17/1991 | EP0437300A1 Pulse-width modulation drive circuit |
| 07/16/1991 | US5032774 Current sensing circuit for use with a current controlling device in a power delivery circuit |
| 07/16/1991 | US5032772 Motor driver circuit for resonant linear cooler |
| 07/16/1991 | US5032745 Current sensing of DC or a stepper motor |
| 07/12/1991 | WO1991011052A1 Improved motor controller having a control loop for neutralizing rotor leakage and magnetizing reactances |
| 07/12/1991 | CA2073438A1 Motor controller having a control loop for neutralizing rotor leakage and magnetizing reactances |
| 07/10/1991 | EP0409880A4 Actuator and communication system |
| 07/09/1991 | CA1285984C Control mechanism for a separately excited dc drive motor and method for control of a dc drive motor |
| 07/02/1991 | US5029265 Motor controller having a control loop for neutralizing rotor leakage and magnetizing reactances |
| 07/02/1991 | US5029229 Electric motor |
| 07/02/1991 | US5029040 Output circuit having a fail-safe function |
| 07/02/1991 | US5028853 Switch actuation circuit and arrangement |
| 07/02/1991 | CA1285608C Induction motor control apparatus and method |
| 06/27/1991 | WO1991009198A1 Drive device for movable components |
| 06/26/1991 | EP0433491A1 Single-phase-series motor, especially for driving an automatic washing machine |
| 06/25/1991 | CA1285315C Direct current adjusting device |
| 06/21/1991 | WO1991009461A1 Direct current power control circuit |
| 06/11/1991 | US5023532 Drive mechanism for windshield wiper systems on motor vehicles |
| 06/11/1991 | US5023493 FET and bipolar transistor bridge circuit for driving a load |
| 06/11/1991 | CA1284816C Method of and arrangement for controlling an h-bridge electric motor |
| 06/06/1991 | DE4100584A1 Speed-measuring arrangement for miniature DC commutator motor - employs proportionate AC component of commutated current in speed regulation circuit with adjustable set-point value |
| 06/05/1991 | EP0430298A2 Device for controlling rotational speed of motor |
| 06/02/1991 | CA2031177A1 Power-driven system for variable-speed rotator and apparatus therewith |
| 05/29/1991 | CN2077716U Automatic adjustable pressurized perfusion control apparatus |
| 05/28/1991 | US5020126 Method and circuit for the automatic control of the speed of a DC motor by the control voltage of the motor |
| 05/28/1991 | US5019765 Motor control device for powered seat |
| 05/21/1991 | US5017854 Variable duty cycle pulse width modulated motor control system |
| 05/21/1991 | CA1284348C Bidirectional motor drive circuit |
| 05/14/1991 | US5014793 Variable speed DC motor controller apparatus particularly adapted for control of portable-power tools |
| 05/09/1991 | CA2002654A1 Express window lift motor shutdown |
| 05/08/1991 | DE3936484A1 DC electric motor control circuit - uses MOSFET power transistors connected in bridge circuit supplied with DC via over voltage generator |
| 05/07/1991 | US5014336 Motor control |
| 05/07/1991 | US5013981 Control mechanism for a drive motor or the like |
| 05/07/1991 | CA1283948C Motor control circuit |
| 05/02/1991 | EP0424868A2 Electrical drive system for a vehicle motor |
| 04/23/1991 | CA1283469C Control mechanism for a printing machine drive motor or similar |
| 04/18/1991 | WO1991005402A1 Power controller with low standby current drain |
| 04/18/1991 | WO1991004866A1 Carriage controller of a printer |
| 04/17/1991 | EP0422529A2 System for controlling the electric motor of a vehicle actuating device |
| 04/11/1991 | DE3939889C1 Shut=off valves circuit for braking circuit of DC series-wound motor - has traction valve with return fed diode in antiparallel connected to DC voltage source |
| 04/10/1991 | EP0421756A2 Fet and bipolar transistor bridge circuit for driving a load |
| 04/10/1991 | CN2074954U Multi-parameter all-automatic controlling instrument |
| 04/10/1991 | CN2074952U Refrigerator energy-saving device |
| 04/10/1991 | CN1050652A Electromechanical integrated dc motor controller |
| 04/10/1991 | CN1050651A Power controller with low standby current drain |
| 04/04/1991 | WO1991004607A1 D.c. motor control system |
| 04/03/1991 | CN1050474A Electric drag apparatus for electromechanical drilling machine |
| 04/02/1991 | US5005207 Method of controlling the speed of a D.C. motor and device for carrying out the method |
| 04/02/1991 | CA1282508C Method and device for elevator dc drive motor stabilization |
| 03/26/1991 | US5003628 Variable speed D.C. motor control |
| 03/26/1991 | CA2011994A1 Power controller with low standby current drain |
| 03/21/1991 | WO1991003870A1 Power supply control apparatus of inductance load |
| 03/20/1991 | CN1050113A Method and apparatus for optimization of thyristor power supply transport time delay |
| 03/19/1991 | US5001407 Speed control apparatus having means for changing reference signal for error signal, depending upon load applied to controlled device |
| 03/13/1991 | EP0416608A2 A method and apparatus for the optimization of thyristor power supply transport time delay |
| 03/12/1991 | US4999556 Pulse width modulator motor control |
| 03/09/1991 | CA2024921A1 Method and apparatus for the optimization of thyristor power supply transport time delay |
| 03/05/1991 | US4997237 Bi-modal DC motor control for a motor driven anti-lock brake system |
| 03/05/1991 | CA1281068C Fault protection apparatus for traction motor circuit |
| 03/05/1991 | CA1281067C Static power conversion for adding d.c. motors |
| 02/27/1991 | EP0413893A2 Process and circuit for monitoring of regulating elements with electric motors |
| 02/19/1991 | US4995094 DC motor control circuit providing variable speed operation |
| 02/14/1991 | DE4024160A1 DC level controller with antiphase clocked switch pairs - performs two-term control of inductive load current maintained at desired value by selective switching circuit |
| 02/05/1991 | CA1279892C Digital robot control providing pulse width modulation for a brushless dc drive |
| 01/30/1991 | EP0410853A1 Power mos motor control with current mirror |
| 01/30/1991 | EP0410052A1 Feedback circuitry for D.C. motor speed control |