| Patents for H02P 7 - Arrangements for regulating or controlling the speed or torque of electric dc-motors (10,217) |
|---|
| 06/28/1988 | US4754209 Motor actuator |
| 06/22/1988 | EP0271752A2 Direct current converter |
| 06/21/1988 | US4752723 For driving a shunt motor |
| 06/16/1988 | DE3641627A1 Method and speed control circuit for load-dependent speed control of a DC motor |
| 06/15/1988 | EP0270566A1 Shaker table amplifier |
| 06/14/1988 | US4751439 Multiple chopper speed control system for compound motor |
| 06/07/1988 | US4749927 Adaptive digitally controlled motor drive system and method |
| 06/07/1988 | US4749922 Electric motor control circuit |
| 05/31/1988 | US4748389 Motor speed control apparatus |
| 05/25/1988 | EP0268018A2 Four-quadrants drive with a D.C. motor |
| 05/24/1988 | US4746846 Direct current motor control, and uses to measure force, and with a physical exercise device |
| 05/18/1988 | EP0267194A1 Fault protection apparatus |
| 05/17/1988 | US4745563 Method of detecting the speed of a motor |
| 05/11/1988 | CN87212294U A cheap pulse type motor governor |
| 05/10/1988 | US4743814 Static power conversion for adding DC motors |
| 05/03/1988 | US4742281 Speed control apparatus for a DC motor |
| 04/28/1988 | DE3635793A1 Circuit arrangement for the selective (optional) control of a DC series-wound machine in the drive mode or generator useful-braking mode |
| 04/28/1988 | DE3635782A1 Circuit arrangement for the selective (optional) control of a DC series-wound machine in the drive mode or mixed generator useful-braking and/or resistance-braking mode |
| 04/19/1988 | US4739234 DC motor adaptive controller apparatus |
| 04/19/1988 | US4739229 Apparatus for utilizing an a.c. power supply to bidirectionally drive a d.c. motor |
| 04/14/1988 | DE3634419A1 Device for bidirectionally driving a DC motor |
| 04/13/1988 | EP0263573A2 Motorized tang drive system |
| 04/07/1988 | DE3732158A1 Von einem elektromotor angetriebene tachometer-vorrichtung From an electric motor driven tachometer-device |
| 04/06/1988 | EP0262120A1 Control circuit for an electric motor. |
| 04/05/1988 | US4736142 Speed control system for electric motor |
| 03/30/1988 | EP0261689A2 Speed control system for DC motor |
| 03/22/1988 | US4733144 Electronic digitized proportional-integral controller |
| 03/17/1988 | DE3630830A1 Regulator for controlling motor drives |
| 03/10/1988 | DE3629186A1 Power output stage |
| 03/09/1988 | EP0259005A1 Method and apparatus for control of current in a motor winding |
| 03/09/1988 | CN86205388U Electronic speed regulator of series mator |
| 03/08/1988 | CA1233874A1 Chopper frequency determination apparatus |
| 03/01/1988 | CA1233509A1 Twelve pulse ac motor drive |
| 02/24/1988 | EP0256937A1 Control and dialog device, espcecially for a variable-speed drive |
| 02/24/1988 | CN86201985U Explosion-isolation pulse speed regulator for storage battery electric locomotive |
| 02/11/1988 | DE3619231C1 Drive circuit for a DC motor |
| 02/10/1988 | CN86207776U Dc speed-adjustable motor |
| 02/09/1988 | US4724367 System for driving a motor |
| 02/09/1988 | US4724366 For digitally controlling the supply of power |
| 02/03/1988 | EP0254970A2 Method and arrangement to generate a tachovoltage for driving dc motor in typewriters or similar office machines |
| 02/03/1988 | CN85108196B Arrangements for controlling d.c. motors |
| 02/02/1988 | US4723099 Drive for a switch |
| 01/28/1988 | WO1988000771A1 Speed control unit for direct current electric motor with intrinsic feed-back |
| 01/28/1988 | WO1988000770A1 Final stage of a bridge circuit |
| 01/27/1988 | CN87104603A Arrangement for controlling motor speed |
| 01/26/1988 | CA1232010A1 Microprocessor controlled d.c. motor for controlling a load |
| 01/26/1988 | CA1232009A1 Microprocessor controlled d.c. motor for indexing postage value changing means |
| 01/19/1988 | US4720661 Method and apparatus for controlling reel tension |
| 01/13/1988 | EP0252095A1 D.c. motor control system. |
| 01/12/1988 | US4719396 Electric motor drive circuit for electric power steering systems for vehicles |
| 01/12/1988 | US4719395 Variable speed control switch for an electric tool including a DC motor |
| 12/29/1987 | US4716535 Speed detection apparatus |
| 12/29/1987 | US4716348 DC motor adaptive controller |
| 12/22/1987 | CA1230661A1 Variable speed resistive network for a pneumatic servo assembly for an electro-pneumatic converter |
| 12/17/1987 | WO1987007790A1 Regeneration control system for a servo motor |
| 12/17/1987 | WO1987007567A1 Switch for actuating an electric motor of a windscreen wiper |
| 12/16/1987 | EP0249259A1 Power-supply circuit |
| 12/16/1987 | EP0249166A1 Switch for operating a windshield wiper motor |
| 12/03/1987 | WO1987007451A1 Fault protection apparatus |
| 12/01/1987 | US4710686 Method and apparatus for control of current in a motor winding |
| 12/01/1987 | US4710685 Vehicle power window control circuit with reverse battery protection |
| 11/25/1987 | EP0246664A2 Stepless speed change electric chain block |
| 11/25/1987 | CN87103527A Power-supply circuit |
| 11/10/1987 | US4705997 Bidirectional motor drive circuit |
| 11/10/1987 | US4705412 Protection circuit for drive transistor of printer head |
| 11/05/1987 | WO1987006693A1 Shaker table amplifier |
| 11/04/1987 | EP0243625A2 DC motor speed control |
| 10/27/1987 | US4703238 Amplifier system for D.C. motor |
| 10/22/1987 | DE3611884A1 Hand tool, especially a screwdriver, driven by a rechargeable battery (accumulator) |
| 10/21/1987 | EP0241531A1 Device for automatic control of direct current motors |
| 10/21/1987 | CN86107701A Circuit with an insulated-gate field-effect transistor and a coil |
| 10/20/1987 | US4701685 Controlling a d.c. motor |
| 10/15/1987 | DE3710470A1 Control circuit for a motor drive, in particular a fan motor drive |
| 10/14/1987 | EP0241403A1 Bidirectional motor drive circuit |
| 10/13/1987 | US4700148 Shaker table amplifier |
| 10/07/1987 | EP0240172A2 PWM motor operating circuit with RFI suppression |
| 10/07/1987 | EP0239655A1 Electronic proportional-integral-controller in digital execution |
| 10/06/1987 | US4698567 Ribbon deck motor control |
| 10/06/1987 | US4698566 Apparatus for controlling motor speed |
| 09/29/1987 | US4697126 Control method for direct current motor |
| 09/24/1987 | DE3608707A1 Arrangement in a series-wound machine |
| 09/22/1987 | US4695778 Rotation phase control device |
| 09/17/1987 | DE3607672A1 Electric motor drive for a hand-held screwdriver which can be switched over between right-hand and left-hand drive |
| 09/15/1987 | US4694228 Compensation circuit for control system providing pulse width modulated drive signal |
| 09/08/1987 | CA1226653A1 Load feed device, especially for direct current motors of ac-dc railway locomotives |
| 09/02/1987 | CN86206356U Stepless governing unit for blower |
| 09/01/1987 | US4691150 Motor speed controller |
| 08/27/1987 | DE3606239A1 Control circuit having at least one circuit breaker |
| 08/25/1987 | US4689540 Position control in a D.C. motor |
| 08/25/1987 | US4689533 Controlled fan |
| 08/20/1987 | DE3604821A1 Circuit arrangement for controlling a motor, especially for roller-shutter drive systems |
| 08/18/1987 | US4687975 Motor control with radio control device |
| 08/13/1987 | WO1987002527A3 Device for automatic control of direct current motors |
| 08/04/1987 | US4684859 Chopper control system |
| 08/04/1987 | US4684856 Method and drive for elevator DC drive motor stabilization |
| 07/29/1987 | EP0166744A4 A programmed microprocessor for a speed control system for a d.c. motor. |
| 07/29/1987 | CN86108659A 逆变器 Inverter |
| 07/14/1987 | US4680517 Motor drive control device |
| 07/14/1987 | US4680513 Electric motor reversing control devices |
| 07/14/1987 | US4680512 Fault protection apparatus for traction motor circuit |