Patent application number | Description | Published |
20130050899 | MULTILAYER CERAMIC CAPACITOR - There is provided a multilayer ceramic capacitor including: a ceramic body; first and second internal electrodes including respective lead-out portions having an overlapping area, the overlapping area being exposed to one surface of the ceramic body; first and second external electrodes formed on the one surface of the ceramic body and connected to the respective lead-out portions; and an insulation layer formed on the one surface of the ceramic body to which the lead-out portions are exposed. | 02-28-2013 |
20130058006 | MULTILAYER CERAMIC CAPACITOR - There is provided a multilayer ceramic capacitor including: a ceramic body; first and second internal electrodes provided within the ceramic body and including lead-out portions exposed to a first surface of the ceramic body and having an overlapping area, the overlapping area being exposed to the first surface of the ceramic body; external electrodes formed on the first surface of the ceramic body and connected to the respective lead-out portions; and an insulation layer formed on the first surface of the ceramic body and on third and fourth surfaces thereof connected to the first surface, wherein the lead-out portions have a predetermined interval from the third or fourth surface of the ceramic body. | 03-07-2013 |
20130120899 | MULTILAYER CERAMIC ELECTRONIC PART AND METHOD OF MANUFACTURING THE SAME - There is provided a multilayer ceramic electronic part, including: a ceramic element having a plurality of dielectric layers laminated therein; and a plurality of first and second internal electrodes each including a body part formed on at least one surface of each of the plurality of dielectric layers within the ceramic element, the first and second internal electrodes including first and second lead parts extended from one surfaces of the body parts to be exposed through one surface of the ceramic element, respectively, wherein inside connection portions between the body parts and the first and second lead parts are curvedly formed, and have a curvature radius of 30 to 100 μm. | 05-16-2013 |
20130170094 | MULTILAYER CERAMIC CAPACITOR - There is provided a multilayer ceramic capacitor, including: a multilayer body having a plurality of dielectric layers and a plurality of internal electrode layers alternately laminated; wherein each internal electrode layer has a width gradually decreases from a center thereof towards both ends thereof in a length direction; and when a width of each internal electrode layer at the ends thereof in the length direction is defined as a minimum width L | 07-04-2013 |
20130214623 | SWITCHED RELUCTANCE MOTOR - Disclosed herein is a switched reluctance motor including: a salient pole type rotor provided with a plurality of salient poles; and a stator including a stator body provided with a plurality of salient poles facing the rotor and a plurality of auxiliary slots disposed between the salient poles, a plurality of phase windings formed by winding coils around the salient poles, and a plurality of electromagnets formed by winding coils in the auxiliary slots, wherein magnetic fluxes generated due to excitation of the phase windings interact with magnetic force generated from the electromagnets, such that a magnetic flux amount may increase and torque density may be improved, and an intersection line is not generated in the magnetic fluxes generated due to the excitation of the phase windings. | 08-22-2013 |
20130293181 | SWITCHING CONTROL APPARATUS FOR TWO PHASE SWITCHED RELUCTANCE MOTOR AND METHOD THEREOF - Disclosed herein are a switching control apparatus for a two phase switch reluctance motor and a control method using the same. The switching control apparatus includes a rectifier; and an active converter including a pair of common switches, a pair of first phase switches, a pair of serially connected second phase switches, a plurality of current feedback diodes each connected to the switches, and a pair of drivers controlling the switches and operated as operation modes 1 to 3 to provide the commercial power provided from the rectifier to the two phase SRM and drive the two phase SRMs. | 11-07-2013 |
20140042952 | APPARATUS AND METHOD FOR PREVENTING SENSING ERROR IN SRM - Disclosed herein are an apparatus and method for preventing a sensing error in a switched reluctance motor (SRM). The apparatus includes: a rectifying unit; a main controlling unit driven by power supplied from the rectifying unit, and operated in an error mode in the case in which the rotation speed of the rotor is decreased to a predetermined value or less; a voltage detecting; and an error preventing unit preventing an operation of the main controlling unit in an error mode at the time of reconnection of a power supply when it is sensed that the power has been blocked using the variation in the supplied voltage detected by the voltage detecting unit. | 02-13-2014 |
20140055062 | SWITCHING APPARATUS FOR TWO-PHASE SRM AND CONTROL METHOD THEREOF - Disclosed herein are a switching apparatus for a two-phase SRM and a control method thereof. The switching apparatus for a two-phase SRM includes: a rectifier rectifying commercial power; and a zero-voltage switching converter including a pair of upper and lower switches that is vertically connected to each of two phase windings in series and a pair of diodes that is cross-connected across the two phase windings to be operated in operation modes 1 to 3 for each phase winding and provide commercial power supplied from the rectifier to the two-phase SRM so as to operate the two-phase SRM. | 02-27-2014 |
20140068891 | POWER FACTOR CORRECTION CIRCUIT, POWER SUPPLY DEVICE AND VACUUM CLEANER USING THE SAME - A power factor correction circuit, a power supply device and a vacuum cleaner using the same. The power supply device for a vacuum cleaner is applicable to a vacuum cleaner having a flexible hose. The power supply device for a vacuum cleaner includes: A power factor correction unit correcting a power factor of an AC voltage supplied from an AC power source; a rectifying unit rectifying the AC voltage power factor-corrected by the power factor correction unit into a direct current (DC) voltage and outputting the DC voltage; a smoothing unit smoothing the DC voltage output from the rectifying unit and outputting the smoothed the DC voltage; an a converting unit converting the smoothed DC voltage from the smoothing unit into an AC voltage, wherein the power factor correction unit uses a conductive line included in the flexible hose, as an inductor. | 03-13-2014 |
20140160615 | MULTILAYER CERAMIC ELECTRONIC COMPONENT - A multilayer ceramic electronic component including: a ceramic main body including a dielectric layer and having first and second main surfaces opposing one another, first and second lateral surfaces opposing one another, and first and second end surfaces opposing one another; a first internal electrode formed within the ceramic main body, including a capacitance formation part having an overlap region to form capacitance and a first lead out portion extending from the capacitance formation part so as to be exposed to the first lateral surface; a second internal electrode alternately laminated together with the first internal electrode, having a second lead out portion extending from the capacitance formation part so as to be exposed to the first lateral surface; first and second external electrodes; and insulating layers. | 06-12-2014 |
20140160621 | MULTILAYER CERAMIC CAPACITOR AND METHOD OF MANUFACTURING THE SAME - A multilayer ceramic capacitor includes a ceramic body; first and second internal electrodes including first and second body parts overlapped with each other and first and second lead-out parts having an overlap region and exposed to one surface of the ceramic body; first and second external electrodes formed on one surface of the ceramic body; and an insulating layer formed on one surface of the ceramic body, wherein first and second connection surfaces extended from end portions of the first and second body parts to end portions of the first and second lead-out parts are inclined, and when half of length of the internal electrode is defined as A and length from a center of the ceramic body to a starting point of the connection surface is defined as B, B/A satisfies 0.03≦B/A≦0.90. | 06-12-2014 |
20140177126 | MULTILAYER CERAMIC CAPACITOR AND METHOD OF MANUFACTURING THE SAME - There is provided a multilayer ceramic capacitor including: a ceramic body; a plurality of first and second internal electrodes including first and second body portions and first and second lead out portions, respectively; first and second external electrodes formed on one surface of the ceramic body, respectively; and an insulating layer formed on one surface of the ceramic body and covering exposed portions of the first and second lead out portions, wherein inner connection portions between the first and second body portion and the first and second lead out portions may have a concave curved surface, respectively. | 06-26-2014 |
20140177127 | MULTILAYER CERAMIC ELECTRONIC COMPONENT AND MANUFACTURING METHOD THEREOF - There is provided a multilayer ceramic electronic component including: a ceramic body including a plurality of dielectric layers; and a plurality of first and second internal electrodes disposed to face each other with the dielectric layer interposed therebetween within the ceramic body and having different widths, wherein three or more of the plurality of first and second internal electrodes form a single block, the blocks are iteratively laminated, and when the longest distance between the uppermost internal electrode and the lowermost internal electrode, among the plurality of first and second internal electrodes | 06-26-2014 |
20140177128 | MULTILAYER CERAMIC ELECTRONIC COMPONENT - There is provided a multilayer ceramic electronic component including: a ceramic body; a plurality of first internal electrodes formed within the ceramic body; a plurality of second internal electrodes alternately laminated together with the first internal electrodes with the dielectric layer interposed therebetween, insulated from the first internal electrodes, wherein a distance between the plurality of first internal electrodes | 06-26-2014 |
20140184112 | METHOD AND APPARATUS OF CONTROLLING DRIVING OF TWO-PHASE SWITCHED RELUCTANCE MOTOR - Disclosed herein are a method and apparatus of controlling driving of a two-phase switched reluctance motor (SRM). The apparatus includes: a target speed arrival judging unit judging whether or not a current speed of the SRM has arrived at a target speed; a zero volt switching (ZVS) achievement judging unit judging whether or not the SRM is in a state in which ZVS is possible; a negative torque generation judging unit judging whether or not a negative torque has been generated in the SRM; an advanced angle controlling unit judging whether or not an advanced angle will be controlled based on judgment results of the target speed arrival judging unit, the ZVS achievement judging unit, and the negative torque generation judging unit; and a dwell angle controlling unit judging whether or not a dwell angle will be controlled on the judgment results. | 07-03-2014 |
20140290993 | MULTILAYER CERAMIC CAPACITOR, MANUFACTURING METHOD THEREOF, AND CIRCUIT BOARD FOR MOUNTING ELECTRONIC COMPONENT - There is provided a multilayer ceramic capacitor including: a ceramic body including a plurality of dielectric layers laminated therein; an active part including a plurality of first and second internal electrodes alternately exposed to both end surfaces of the ceramic body, having the dielectric layer interposed therebetween, and forming capacitance; an upper cover layer formed on the active part and including an upper marking electrode therein; and first and second external electrodes formed on the end surfaces of the ceramic body and electrically connected to the first and second internal electrodes, respectively, wherein when a thickness of the dielectric layer is d and a distance between a first internal electrode formed in the uppermost portion of the active part and the upper marking electrode is A1, 2d≦A1 is satisfied. | 10-02-2014 |
20140301012 | MULTILAYER CERAMIC CAPACITOR AND METHOD OF MANUFACTURING THE SAME - There is provided a multilayer ceramic capacitor including: a ceramic body having first and second side surfaces opposite to each other, and third and fourth end surfaces connecting the first and second side surfaces; a plurality of internal electrodes formed in the ceramic body and having one ends thereof exposed to the third or fourth end surface; and first and second side margin parts formed from the first and second side surfaces to respective edges of the internal electrodes, the first and second side margin parts having an average thickness of 18 μm or less, wherein when a boundary surface between a cover layer and the first or second side margin part in the ceramic body is divided into two regions in a thickness direction of the ceramic body, a region adjacent to the internal electrode is S1, and a porosity of S1 is P1, 1≦P1≦20 is satisfied. | 10-09-2014 |
20140301013 | MULTILAYER CERAMIC CAPACITOR AND METHOD OF MANUFACTURING THE SAME - There is provided a multilayer ceramic capacitor including a ceramic body having first and second side surfaces facing each other, and third and fourth end surfaces connecting the first and second side surfaces, a plurality of internal electrodes formed in the ceramic body and having one ends thereof exposed to the third end surface or the fourth end surface, and a first side margin part and a second side margin part formed such that an average thickness thereof from the first and second side surfaces to edges of the internal electrodes is 18 μm or less. | 10-09-2014 |
20140301014 | MULTILAYER CERAMIC CAPACITOR AND METHOD OF MANUFACTURING THE SAME - There is provided a multilayer ceramic capacitor including a ceramic body having first and second side surfaces facing each other, and third and fourth end surfaces connecting the first and second side surfaces, a plurality of internal electrodes formed in the ceramic body and having one ends thereof exposed to the third end surface or the fourth end surface, and first and second side margin parts formed from the first and second side surfaces to edges of the internal electrodes, wherein in a width direction of the ceramic body, both edges of the internal electrodes include oxide regions, the oxidation regions of an internal electrode contributing to capacitance formation except for uppermost and lowermost internal electrodes among the internal electrodes have a maximum length Lmax of 3 μm or less, and a standard deviation in length is 1 μm or less. | 10-09-2014 |
20140301015 | MULTILAYER CERAMIC CAPACITOR AND METHOD OF MANUFACTURING THE SAME - There is provided a multilayer ceramic capacitor including a ceramic body having first and second side surfaces and third and fourth end surfaces, a plurality of internal electrodes and having one ends exposed to the third or fourth end surface, and first and second side margin parts formed so that an average thickness from the first and second side surfaces to edges of the internal electrodes is 18 μm or less, wherein when the first or second side margin part is divided into two regions by a virtual line obtained by connecting mid points of distances between the edges of the internal electrodes and points at which lines extended from the internal electrodes contact the first or second side surface, when a region adjacent to the internal electrodes is defined as S1 and a porosity of S1 is defined as P1, P1 is in a range of 1 to 20 (1≦P1≦20). | 10-09-2014 |
20140376153 | MULTILAYER CERAMIC CAPACITOR - There is provided a multilayer ceramic capacitor including: a ceramic body; first and second internal electrodes provided within the ceramic body and including lead-out portions exposed to a first surface of the ceramic body and having an overlapping area, the overlapping area being exposed to the first surface of the ceramic body; external electrodes formed on the first surface of the ceramic body and connected to the respective lead-out portions; and an insulation layer formed on the first surface of the ceramic body and on third and fourth surfaces thereof connected to the first surface, wherein the lead-out portions have a predetermined interval from the third or fourth surface of the ceramic body. | 12-25-2014 |