Patents
Sitemap › H02 - Generation, conversion, or distribution of electric power › H02P - Control or regulation of electric motors, generators, or dynamo-electric converters; Controlling transformers or reactors or choke coils › H02P 7 - Arrangements for regulating or controlling the speed or torque of electric dc-motors
Patents for H02P 7 - Arrangements for regulating or controlling the speed or torque of electric dc-motors (10,217)
06/1977
06/07/1977US4028604 Servo-motor control system
06/07/1977US4028602 Control circuit of an electric motor comprising an output transistor of NPN type
06/07/1977US4028601 Multi-loop direct current motor regulating system protected against windup by a clamp circuit
06/07/1977US4028597 Motor control systems
06/07/1977US4027745 Elevator speed control system
05/1977
05/31/1977US4027220 Regenerative motor control having improved field circuit
05/31/1977US4027217 Speed control for a motor
05/31/1977US4027214 Field shunting circuit
05/24/1977US4025836 Protective system against commutation failure in a chopper circuit
05/10/1977US4023081 Plural motor drive system
04/1977
04/26/1977US4020411 Static power converter controlling apparatus for reducing noise generated by phase shift control
04/26/1977US4020403 Reversing control for DC. motors of the permanent magnet field type
04/19/1977US4019108 Drive equipment supplied with direct current
04/19/1977US4019107 D. C. motor control system
04/19/1977US4019106 Motor speed control
04/12/1977US4017777 Load voltage clamping circuit for voltage turn-off chopper
04/12/1977US4017775 Fault detector circuit with two-fault memory
04/05/1977US4016468 Controlled rectifier motor drive system including d.c. fault detection and commutation means
03/1977
03/29/1977US4015180 Speed regulating devices for rotary machines or the like
03/29/1977US4015179 DC motor control circuit
03/15/1977US4012680 Field boost arrangement for separately excited D-C traction motors of a vehicle propulsion system
03/08/1977US4011492 Chopper motor controller having pulse-by-pulse sensing of plugging
03/08/1977US4011491 Motor speed control circuit
03/01/1977US4010411 Power conversion apparatus
02/1977
02/22/1977US4009431 Series parallel transition for power supply
02/15/1977US4008426 Electronic speed control systems for miniature direct current motors
02/15/1977US4008424 Bidirectional speed control system
02/15/1977US4008423 Electrically propelled vehicle
02/08/1977US4007409 Method of and device for controlling a d.c. washing machine motor
02/08/1977US4007408 Apparatus for synchronization of a motor
01/1977
01/25/1977US4005348 Control system for DC motors
01/18/1977US4003647 Claw mechanism
12/1976
12/21/1976US3999109 D-C motor control circuit
12/14/1976US3997824 Electrical propulsion system and control arrangements therefor
11/1976
11/30/1976US3995208 Control circuit
11/30/1976US3995204 Braking mode control for an electric traction motor
11/23/1976US3993942 Forced commutation chopper having current limit
11/23/1976US3993920 Coreless motor
11/09/1976US3991349 Droop adjustable control apparatus for direct current motor drives
11/02/1976US3989992 Pulse width modulated control system
11/02/1976US3989990 Feedback field control for an electric vehicle
10/1976
10/26/1976US3988655 Apparatus to control the direction of movement of a mechanism
10/26/1976US3988577 Automated energy systems with computer compatibility
10/19/1976US3987349 Control systems of electric motors for driving electric motor cars
10/05/1976US3984744 D.C. voltage control system
10/05/1976US3984740 Switching circuits using operational amplifiers
09/1976
09/28/1976US3983466 Motor field control for d.c. drives
09/28/1976US3983464 Direct current motor speed control apparatus
09/28/1976US3983462 Field shunting control for a DC series motor
09/21/1976US3982161 Time-ratio control having bidirectional speed potentiometer
09/14/1976US3980936 D.C. control circuits
08/1976
08/31/1976US3978384 Bidirectional motor drive using switched amplitude controlled current
08/24/1976US3976926 Digital DC motor speed control circuit
08/10/1976US3974435 Means for supplying a load object
08/10/1976US3974428 Wide range, high accuracy, electronically programmed speed control system
08/03/1976USRE28920 Remote control for vacuum cleaner motor
08/03/1976US3973177 Motor speed control device
08/03/1976US3973176 Control circuits for electrically driven vehicles
08/03/1976US3972603 Automatic prompter
07/1976
07/27/1976US3971974 Apparatus for controlling the synchronous drive for direct-current motors
07/27/1976US3971973 Rheostatic control system for a DC motor
07/27/1976US3971204 Circuit for driving a DC motor for a clock
07/20/1976US3970909 Constant speed regulator for DC motor
07/13/1976US3969661 Motor control apparatus
07/13/1976US3969660 Regenerative motor control with improved circuit means
07/13/1976US3969658 Motor and control system having cyclic reversal and unidirectional capabilities
07/06/1976US3968420 Chopper circuit arrangement
07/06/1976US3968414 Bypass contactor control
06/1976
06/29/1976US3967175 Automatic sequencing scheme for reversing directions of electric traction motors
06/22/1976US3965409 D-C control element circuit
06/22/1976US3965407 Method and means for measuring the torque delivered by an electric motor
06/22/1976US3965405 Driving and control system for D.C. motors
06/22/1976US3965403 Constant power control of a D.C. electric motor for handling cargoes
06/15/1976US3963970 Control circuit for servo-motors
06/08/1976US3962615 Multiple mode variable speed motor control circuit
06/08/1976US3962612 Control device for electric vehicle
06/01/1976US3961233 D-C voltage control
05/1976
05/25/1976US3959705 Direct current motors with improved commutation
05/25/1976US3959703 Speed control for pump of filling machines
05/25/1976US3959701 Drive system for electrically driven vehicles
05/18/1976US3958163 Method and apparatus for plug sensing
05/11/1976US3956688 Remote control phase shift circuit for thyristor
05/04/1976US3955130 Motor control circuit including motor current limiting means
05/04/1976US3954081 Outboard motor with speed regulator for DC permanent magnet motor
04/1976
04/13/1976US3950684 Direct current motor speed control apparatus
04/13/1976US3950683 Motor control system having dead band control
04/13/1976US3950682 Digital dc motor velocity control system
04/13/1976US3950681 Control system for an electric vehicle incorporating a brake switch
04/06/1976US3949288 Movement control
04/06/1976US3949287 Position-control servo system with speed-dependent damping action
04/06/1976US3949284 Control circuits for electrically driven vehicles
03/1976
03/30/1976US3947754 Open loop series regulated power supply
03/30/1976US3947739 Regenerative braking controller for a DC motor
03/30/1976US3947738 Pulsed power supply
03/30/1976US3947737 Gate control of thyristor converters for reversibly driving a D.C. electric motor
03/23/1976US3946295 Sonar flasher speed control
03/16/1976US3944901 Circuit arrangement for maintaining the speed of a DC motor constant
03/16/1976US3944900 Control circuits for electrically driven vehicles
03/16/1976US3944899 Control circuit for electrically driven vehicles
03/16/1976US3944898 Control circuits for electrically driven vehicles
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