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Class 318/508 - Impedance-controlled


Subclass of Class 318 - Electricity: motive power systems
Definition: Subject matter in which means are provided for connecting
No. of patents: 7
Last issue date: 11/07/2006


NumberTitleIssue Date
7132812Integrated DC link choke and method for suppressing common-mode voltage in a motor drive
A motor drive and a choke therefor are disclosed, wherein the choke comprises a magnetic core with an inner leg and two outer legs, and four coils, which may be connected in DC current paths in the motor drive. First and second differential coils are wound around fi...
11/07/2006
7131164Vacuum cleaner and suction nozzle employed therein
A suction nozzle for use in a vacuum cleaner includes a floor nozzle and a mini nozzle having a suction head, a rotatable joint, and joint, to be detachably secured in the floor nozzle. Either of the suction head and the rotatable joint or the rotatable joint and th...
11/07/2006
7049774Apparatus for controlling power factor compensation in inverter control circuit and method thereof
The present invention provides an apparatus for controlling power factor compensation and method thereof, in which a turn-on timing point of a power factor compensation switch is delayed by a prescribed time from a zero crossing timing point to enhance a power facto...
05/23/2006
7009349Electric power steering apparatus
A resistor member having a resistance value substantially equal to a resistance of a relay in an ON state is inserted into a current supply path which is not inserted with the relay in current supply paths for supplying currents from a driving circuit to a brushless...
03/07/2006
6255792Intelligent suction device capable of automatically adapting the suction force according to the conditions of the surface, particularly for vacuum cleaners and the like
An intelligent suction device, particularly for vacuum cleaners and the like, includes a fuzzy-logic controller for controlling the motor of a fan or turbine. The suction pressure is detected by at least one pressure sensor which feeds back its measuremen...
07/03/2001
6208111Motor starter arrangement with soft start electronic control
An improved motor starter assembly is provided on a frame and having an external profile which matches that or is within that of a prior motor starter is disclosed. The improved motor starter assembly provides a soft start circuit within the profile. Retr...
03/27/2001
5577155Rectifier based motor speed/brake control
A motor speed controller for use with dc motors, such as found in model (slot) cars, is provided by a plurality of pairs of oppositely-poled voltage-sensitive threshold conduction devices which are selectively connected so as to be controllably inserted b...
11/19/1996
 
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