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Class Information
Number: 318/788
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 variable temperature coefficient resistor in switch control circuit
Description: Subject matter wherein the electronic switch means is controlled by a circuit which includes a resistor whose resistance is a function of its temperature.

Patents under this class:

Patent Number Title Of Patent Date Issued
8378619 Motor start circuit for an induction motor Feb. 19, 2013
8258738 Low current electric motor starter Sep. 4, 2012
8253369 Single phase induction motor Aug. 28, 2012
8212510 Fiber optically communicated motor temperature and position signals Jul. 3, 2012
8093850 Fan control system Jan. 10, 2012
7983800 Apparatus and method for controlling fan motor of air conditioner Jul. 19, 2011
7878512 Alignment changing control device Feb. 1, 2011
7782008 Motor and method for controlling operation of motor Aug. 24, 2010
7663335 Single-phase induction motor Feb. 16, 2010
7612519 Control arrangement for an induction motor compressor having at least three windings, a torque-augmentation circuit, a starting capacitor and a resistive element Nov. 3, 2009
7583041 Overheat preventing apparatus for electric motor Sep. 1, 2009
7548039 Motor control unit Jun. 16, 2009
7498763 Apparatus and method for reducing the current drawn during starting of a single-phase AC asynchronous motor Mar. 3, 2009
7459878 Method and circuit for controlling sensorless single-phase BLDCM Dec. 2, 2008
7408321 Control arrangement for an induction motor compressor having at least three windings, a torque-augmentation circuit, a starting capacitor and a resistive element Aug. 5, 2008
7391179 Mutual Inductance Contactless Starter Jun. 24, 2008
7199549 Feedback parameter estimation for electric machines Apr. 3, 2007
7071649 Active temperature estimation for electric machines Jul. 4, 2006
7061204 Motor starter device having reduced power consumption Jun. 13, 2006
7005827 Starting circuit for single-phase induction motor Feb. 28, 2006
6930464 Driving circuit for improving starting of hybrid induction motor and method thereof Aug. 16, 2005
6570359 Motor starting circuit May. 27, 2003
6407530 Device and method for controlling supply of current and static capacitance to compressor Jun. 18, 2002
6239523 Cutout start switch May. 29, 2001
6204628 Motor start switch Mar. 20, 2001
5973473 Motor control circuit Oct. 26, 1999
5952811 Device for shutting off current through a motor start-up circuit after a specified wait period Sep. 14, 1999
5898289 Motor start-up circuit with a triac and PTC thermistors Apr. 27, 1999
5789897 Component for motor start up circuit Aug. 4, 1998
5617001 A.C. motor starting control circuit utilizing triggerable semiconductor switching device Apr. 1, 1997
5451853 Starting device for a single phase induction motor Sep. 19, 1995
5391971 Circuit for starting single-phase AC induction motor Feb. 21, 1995
5212436 Single phase motor start system May. 18, 1993
5192887 Starting multi-speed motors at a low speed connection Mar. 9, 1993
4574229 Power efficient motor starter and circuit breaker for an induction motor Mar. 4, 1986
4467385 Supply and protection unit for a hermetic compressor Aug. 21, 1984
4422120 Combination starter-protector device Dec. 20, 1983
4408244 Circuit safe against overload for varying the amount of power to an electric blower motor Oct. 4, 1983
RE31367 Motor starting and protecting apparatus Aug. 30, 1983
4387330 Balanced single phase alternating current induction motor Jun. 7, 1983
4272714 Starter device for a single-phase asynchronous motor Jun. 9, 1981
4047082 Variable threshold starting circuit for induction motor Sep. 6, 1977

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