| Patents for H02P 7 - Arrangements for regulating or controlling the speed or torque of electric dc-motors (10,217) |
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| 03/17/1981 | CA1097778A1 Device for controlling the motor of an electric sewing machine |
| 03/05/1981 | WO1981000652A1 Polyphase electric machine having controlled magnetic flux density |
| 03/05/1981 | WO1981000650A1 Method and system for controlling multiple speed motor |
| 03/04/1981 | EP0024300A1 Process for pulse-width control of a direct current two-way control element and circuitry for the application of the process |
| 02/25/1981 | EP0024151A1 Motor speed control device for DC motor |
| 02/24/1981 | US4253053 Reluctance electric motor drive systems |
| 02/24/1981 | CA1096440A1 Commutator motor brush force control |
| 02/11/1981 | EP0023623A1 Method for load current detection in a direct current two-way control and circuit arrangement for carrying out the method |
| 02/11/1981 | EP0023622A1 Method for pulse width control of a direct current two-way control element and circuitry for carrying out the method |
| 02/10/1981 | US4250437 Field weakening circuits for electric motors |
| 02/03/1981 | US4249236 Controller for power converter |
| 02/03/1981 | US4249118 Control system for multiple speed motor |
| 01/28/1981 | EP0022774A1 Control for direct-current motor with separately excited field |
| 01/27/1981 | US4247808 Method and apparatus for varying the speed of DC motors |
| 01/27/1981 | US4247807 Method and apparatus for operating DC motors at high efficiency |
| 01/20/1981 | US4246526 Control circuit for a motor driven automatic valve |
| 01/20/1981 | US4246521 DC Motor speed control system |
| 01/20/1981 | US4246520 Motor control and reversing circuit |
| 01/20/1981 | US4246519 D.C. Motor control for an electrically powered vehicle |
| 01/13/1981 | US4245293 Power converter system |
| 12/23/1980 | US4241299 Control system for battery-operated pump |
| 12/23/1980 | US4241260 Motorized headlamp position adjusting circuit |
| 12/23/1980 | CA1092217A1 Electronic reversible motor operated valve assembly |
| 12/16/1980 | US4240015 Control system and method for operating a DC motor |
| 12/16/1980 | US4240014 Precision motor speed control system |
| 12/12/1980 | EP0022774A4 Control for direct-current motor with separately excited field. |
| 12/11/1980 | WO1980002780A1 Digital velocity servo |
| 12/09/1980 | US4238716 Miniature vehicle dispenser spin-up speed control system |
| 12/09/1980 | CA1091293A1 Regenerative motor control having improved field circuit |
| 12/02/1980 | US4237451 Method and means for continuously sampling a fluid |
| 11/25/1980 | US4236103 Control circuit for a direct current motor |
| 11/25/1980 | US4236102 Control system for spool drive of magnetic tape apparatus |
| 11/18/1980 | US4234835 Speed control apparatus for DC motor |
| 11/18/1980 | US4234832 On-line switching between two control parameters |
| 11/13/1980 | WO1980002487A1 Voltage-to-frequency-converter |
| 11/13/1980 | WO1980002483A1 Directional control system |
| 11/13/1980 | WO1980002482A1 Traction-vehicle-propulsion-system |
| 11/11/1980 | US4233549 Speed and torque control for fractional horsepower motors |
| 11/11/1980 | CA1089530A1 Transit vehicle chopper control apparatus and method |
| 11/04/1980 | US4232258 Speed control apparatus for electric motor |
| 11/04/1980 | US4232256 Unitary electric motor and bi-directional controller arrangement |
| 11/04/1980 | CA1089008A1 Closed loop digital control system and method for motor control |
| 10/30/1980 | WO1980002346A1 D.c.motor speed control circuit |
| 10/28/1980 | US4230977 Speed control for electric motor |
| 10/28/1980 | US4230975 Control circuit arrangement for DC motors |
| 10/15/1980 | EP0016967A1 A device for driving a DC motor with feedback control |
| 10/07/1980 | US4227130 Torque compensation system |
| 10/07/1980 | US4227128 Speed responsive motor control circuit |
| 10/07/1980 | US4227127 Motor speed control circuit having improved starting characteristics |
| 09/16/1980 | US4223255 Electric wheel |
| 09/16/1980 | CA1085913A1 Digital control system for d.c. motors |
| 09/16/1980 | CA1085912A1 System for controlling rotations of a dc motor |
| 09/02/1980 | US4220901 Half and full wave energizing system for permanent magnet D.C. motors |
| 08/26/1980 | US4219747 Mechanical apparatus for activating no load current limiting circuits in electric motors |
| 08/20/1980 | EP0014266A1 Improvements in and relating to electrically driven wheel-chairs |
| 08/20/1980 | EP0014241A2 Method for the controlled steering of a D.C.-motor drive unit in a target position and circuit for implementing this method |
| 08/19/1980 | US4218730 Transistor switching apparatus for use in the control of a D.C. load |
| 08/19/1980 | US4218641 Analog DC motor velocity control loop |
| 08/19/1980 | US4218639 Tape tension control for tape recording and/or reproducing system |
| 08/12/1980 | US4217529 Propulsion system for electrical vehicle |
| 08/12/1980 | US4217528 Apparatus for preventing malfunction in a circuit controlling an electrical component maintaining a residual voltage after removal of energization |
| 08/12/1980 | US4217527 Electrical vehicle controller with programmed motor current |
| 08/12/1980 | US4217526 D.C. Motor speed controller |
| 08/05/1980 | US4216418 Speed regulation of D.C. motor using counter |
| 08/05/1980 | US4216417 Transit vehicle motor operation control apparatus and method |
| 07/29/1980 | US4215383 Current regulator for DC motors including sensitivity control means therefor |
| 07/29/1980 | US4214539 Position sensing device for electronic sewing machine |
| 07/29/1980 | CA1082764A1 Electromechanical chopper for speed control of battery powered devices |
| 07/24/1980 | WO1980001526A1 Control for direct-current motor with separately excited field |
| 07/23/1980 | EP0013383A1 Electronic supply arrangement for a series DC motor which permits rapid transition between driving and regenerative breaking |
| 07/22/1980 | US4214288 Direct current motor control with protective solenoid latching |
| 07/22/1980 | US4214190 Tension controlling |
| 07/22/1980 | CA1082302A1 Method and apparatus for electronically commutating a direct current motor without position sensors |
| 07/15/1980 | US4213077 Speed control circuit for a universal electric motor |
| 07/09/1980 | EP0013232A1 Speed control apparatus for a device driven by a motor, particularly a speed control apparatus for an automotive vehicle |
| 07/08/1980 | US4211967 Motor speed adjusting apparatus |
| 07/08/1980 | US4211965 Device for controlling rotational speed of electric motor |
| 07/08/1980 | US4211961 Control circuit for use in control of current supply for electric motor with improved duty controlling oscillator circuit, particularly for electrical vehicle |
| 07/08/1980 | CA1081316A1 Power control of a stalling motor |
| 07/01/1980 | US4210851 Motor control system |
| 06/25/1980 | EP0012547A1 Conduction limit protection arrangement for power transistor switch |
| 06/25/1980 | EP0012539A1 A driving circuit for permanent magnet type DC motor |
| 06/24/1980 | US4209733 Motor control apparatus with an improved thyristor chopper circuit |
| 06/24/1980 | US4209082 Elevator control apparatus |
| 06/24/1980 | CA1080302A1 Motor angular velocity monitor circuit |
| 06/17/1980 | US4208622 Motor circuit of a tape recorder |
| 06/10/1980 | US4207503 Battery supplied motor current control system with safety circuit |
| 06/10/1980 | US4207478 DC Chopper device |
| 06/03/1980 | US4206394 Motor control circuit |
| 06/03/1980 | US4206389 Automatic field control for direct current shunt motor |
| 06/03/1980 | US4205944 Electronic control circuit for blowers in vehicles |
| 05/20/1980 | US4204143 Pulse width modulated power amplifier for direct current motor control |
| 05/06/1980 | US4201936 Motor speed regulator and control system |
| 04/30/1980 | EP0010391A1 Control circuit for a motor driven automatic valve |
| 04/30/1980 | EP0010199A1 Printer escapement control system |
| 04/22/1980 | US4199712 Motor control system incorporating digital top speed limiting arrangement |
| 04/16/1980 | EP0009784A1 System for driving DC motor |
| 04/16/1980 | EP0009735A1 Apparatus for detecting opposite phase and open phase |
| 04/01/1980 | US4196377 Control circuits for electric traction motors for vehicles |
| 03/25/1980 | US4195236 Device for discrete control of thyristor-pulse converters |