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Class Information
Number: 318/787
Name: Electricity: motive power systems > Induction motor systems > Primary circuit control > Starting control > Operating from a single phase source > Start winding removed during running operation > By electronic switch > With transformer for sensing the run winding current
Description: Subject matter wherein the electronic switch means is controlled in response to the output voltage of a sensing transformer which provides a measure of the current flowing in the main winding circuit.

Patents under this class:

Patent Number Title Of Patent Date Issued
8258738 Low current electric motor starter Sep. 4, 2012
8237395 Dual-speed single-phase AC motor Aug. 7, 2012
8212510 Fiber optically communicated motor temperature and position signals Jul. 3, 2012
8198854 Starting circuit for single-phase AC motor and method for starting single-phase AC motor Jun. 12, 2012
7554284 Inductance contactless starter Jun. 30, 2009
7459878 Method and circuit for controlling sensorless single-phase BLDCM Dec. 2, 2008
7199549 Feedback parameter estimation for electric machines Apr. 3, 2007
7061204 Motor starter device having reduced power consumption Jun. 13, 2006
6940249 Inverter device Sep. 6, 2005
6653806 Dynamic brake circuit and semiconductor inverter using dynamic brake circuit Nov. 25, 2003
6605918 System and method for compensating the reading of noncontinuous AC sinusoidal currents Aug. 12, 2003
6570359 Motor starting circuit May. 27, 2003
6479961 Starting system for an electric motor Nov. 12, 2002
5814966 Digital power optimization system for AC induction motors Sep. 29, 1998
5386184 System for use with an electronically commutated electrical machine Jan. 31, 1995
5359272 Sensorless drive control and method for doubly-fed reluctance motor Oct. 25, 1994
5212436 Single phase motor start system May. 18, 1993
5206573 Starting control circuit Apr. 27, 1993
4651077 Start switch for a single phase AC motor Mar. 17, 1987
4496895 Universal single phase motor starting control apparatus Jan. 29, 1985
4486700 Universal single phase motor starting control apparatus Dec. 4, 1984
4388580 Magnetic device for controlling starting of a single phase induction motor Jun. 14, 1983
4307327 Control arrangement for single phase AC systems Dec. 22, 1981

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