| Patents for H02P 25 - Arrangements or methods for the control of ac-motors characterised by the kind of ac-motor or by structural details (7,591) |
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| 06/28/1983 | US4390824 Full wave motor control circuit |
| 06/21/1983 | US4389607 Synchronous motor control device |
| 06/21/1983 | US4389606 Automatically synchronized synchronous motor drive system |
| 06/14/1983 | US4388578 Power factor controller |
| 06/14/1983 | US4387793 Clutch motor arrangement |
| 06/08/1983 | EP0080788A1 Pulsed thyristor trigger control circuit |
| 06/07/1983 | US4387326 Variable reluctance motor systems |
| 06/07/1983 | CA1147832A1 Utensil for cleaning floor coverings |
| 05/24/1983 | CA1147018A1 Variable reluctance electric motor systems |
| 05/24/1983 | CA1147017A1 Reluctance motors 4-phase converter |
| 05/17/1983 | US4384242 Speed control systems of synchronous motors |
| 05/03/1983 | US4382218 Speed control for fan motor |
| 04/28/1983 | WO1983001542A1 An arrangement for driving pumps and like loads |
| 04/26/1983 | CA1145393A1 Power factor control system for inverter-driven a-c induction motor |
| 04/26/1983 | CA1145123A1 Pipe repair methods and apparatus using an electromagnetically exploded filament |
| 04/20/1983 | EP0077095A1 Copying machine and a control system for the same |
| 04/13/1983 | EP0076510A2 Spray gun |
| 04/05/1983 | US4379258 Power control circuit for induction motor |
| 03/23/1983 | EP0074767A2 Improvements in or relating to linear motor and control circuitry therefor |
| 03/23/1983 | EP0074752A1 Power conversion circuit |
| 03/17/1983 | WO1983000961A1 Power conversion circuit |
| 03/16/1983 | EP0073839A1 Control device for synchronous motor |
| 03/15/1983 | CA1143019A1 Power supply for the traveling-field winding of a synchronous linear motor |
| 03/08/1983 | CA1142581A1 Variable reluctance stepper motor |
| 02/09/1983 | EP0071308A2 Drum speed control system for a washing machine |
| 02/09/1983 | EP0071307A2 Drum speed control system for a washing and/or spin drying machine |
| 02/01/1983 | US4371906 Overspeed protective apparatus for a portable tool |
| 01/26/1983 | EP0070693A1 A control system for a synchronous motor employed as a servomotor |
| 01/25/1983 | US4370690 Vacuum cleaner control |
| 01/25/1983 | US4370605 Two-speed motor control |
| 01/12/1983 | EP0069469A1 Apparatus for speed detection |
| 01/05/1983 | EP0068328A1 Power supply system for a linear motor |
| 01/04/1983 | US4367521 PWM Inverter device |
| 01/04/1983 | CA1138965A1 Motor speed control |
| 12/28/1982 | US4366533 PWM Inverter device |
| 12/28/1982 | US4366425 Timer-controlled speed changing device for electric fans |
| 12/28/1982 | US4366421 Index apparatus for a rotary table |
| 12/21/1982 | US4364681 Printer having a linear motor |
| 12/14/1982 | US4364004 Self-controlled polyphase synchronous motor drive system |
| 12/14/1982 | CA1137549A1 Method and apparatus for control of inverter synchronous machine drive system |
| 12/01/1982 | EP0065614A1 Fast reaction servo drive |
| 11/30/1982 | US4361793 Motor voltage controller device |
| 11/30/1982 | US4361791 Apparatus for controlling a PWM inverter-permanent magnet synchronous motor drive |
| 11/30/1982 | US4361095 Power supply for the traveling-field winding of a synchronous linear motor |
| 11/23/1982 | US4360770 Variable reluctance motor systems |
| 11/23/1982 | CA1136207A1 Power supply system for linear motor |
| 10/19/1982 | CA1134080A1 Secondary thyristor control for ac wound rotor motors |
| 10/05/1982 | US4352993 Multiple position power switch |
| 10/05/1982 | CA1133076A1 Feeding system for linear motor type transporting system |
| 09/30/1982 | WO1982003301A1 Control system for synchronous motor and device therefor |
| 09/08/1982 | EP0016023B1 Electromagnetic driving device for positive displacement oscillating pumps |
| 09/07/1982 | US4348625 Variable speed motor system |
| 09/07/1982 | US4348619 Variable reluctance electric motor systems |
| 09/07/1982 | US4348618 Feeding system for linear motor type transporting system |
| 08/24/1982 | US4346434 Apparatus for controlling an electric motor |
| 08/17/1982 | US4345196 Speed control device for sewing machines |
| 07/19/1982 | EP0048261A4 Microcomputer controlled power tool. |
| 07/13/1982 | EP0047251A4 Simplified power factor controller for induction motor. |
| 06/23/1982 | EP0054460A1 Speed control means of an electrical motor of a washing machine |
| 06/23/1982 | EP0054446A1 Electric asynchronous motor, means for controlling the feeding of such a motor and circulating drive comprising such a motor |
| 06/23/1982 | EP0054255A2 Similified connections to control speed relating to electrical rotating machinery |
| 06/15/1982 | CA1125845A1 Multi-phase synchronous machine system |
| 06/08/1982 | US4334182 Motor control system |
| 06/08/1982 | US4334180 Electromagnetic driving mechanism for oscillating displacement pumps |
| 06/02/1982 | EP0052659A1 Motor voltage controller device |
| 06/01/1982 | US4333118 Load indicators for alternating-current motors |
| 06/01/1982 | US4332528 Compression type refrigeration device |
| 06/01/1982 | US4332208 Sewing machine speed control circuit |
| 05/25/1982 | US4331887 Current switch driving circuit arrangements |
| 05/25/1982 | US4331263 Control unit for use in a vibratory feeder system |
| 05/19/1982 | EP0051903A1 Three phase power factor controller |
| 05/18/1982 | CA1123908A1 Circuit arrangement for generating a pulse-width modulated signal |
| 05/04/1982 | US4328507 Recording apparatus |
| 04/27/1982 | US4327314 Inverter system for driving synchronous motor |
| 04/27/1982 | CA1122680A1 Control device for controlling the rotational speed of a portable power tool |
| 04/20/1982 | US4326153 Feedback motor control circuit |
| 04/14/1982 | EP0049649A1 A.C. motor powering arrangement with means for limiting the power delivered to an A.C. motor |
| 04/13/1982 | US4325095 Means for limiting power dissipated in an A.C. motor |
| 04/06/1982 | US4323835 Simplified power factor controller for induction motor |
| 04/06/1982 | US4323831 Commutator motor useful for driving automatic washers |
| 04/06/1982 | CA1121445A1 Stepper motor with analog positioning |
| 03/31/1982 | EP0048261A1 Microcomputer controlled power tool |
| 03/23/1982 | US4321518 Inductor type synchronous motor driving system for minute control of the position and the rotation angle of the motor |
| 03/17/1982 | EP0047251A1 Simplified power factor controller for induction motor |
| 03/16/1982 | US4320493 Linear tracking arm assembly with electric brake |
| 02/23/1982 | US4317176 Microcomputer controlled power tool |
| 02/17/1982 | EP0045951A2 Process for operating an inverter with an intermediate DC link circuit supplying an electric synchronous motor |
| 02/09/1982 | US4315202 Synchronous motors |
| 02/02/1982 | US4314188 Stable subsynchronous drive system for gyroscope rotor |
| 01/26/1982 | US4313075 Programmable electronic speed control |
| 01/20/1982 | EP0044244A2 Single-phase induction motor |
| 01/19/1982 | US4312031 Apparatus for controlling current type inverters |
| 01/19/1982 | US4311950 Excitation system for a synchronous machine |
| 01/19/1982 | US4311949 Semiconductor circuit for speed control of electric motors |
| 01/12/1982 | US4310788 Speed control device of sewing machines |
| 01/12/1982 | US4310787 Phase-control device for synchronous motors |
| 01/05/1982 | US4309647 Commutatorless motor device |
| 01/05/1982 | US4309643 Driving method of motor fed by electric valve feeding apparatus and the same apparatus |
| 01/05/1982 | CA1115770A1 System for controlling alternating current motors |
| 12/30/1981 | EP0042512A1 Current switch driving circuitry |