Patent application number | Description | Published |
20090152946 | POWER SUPPLY DEVICE - Provided is a power supply device including a power supply unit that supplies a driving voltage for driving at least one or more loads; a current balancing unit that maintains a current balance of the driving voltage supplied to the respective loads; a detection unit that detects currents flowing in the current balancing unit through electromagnetic induction so as to output a detection signal; and a control unit that receives the detection signal to judge whether the loads are opened or not and outputs a control signal for controlling the magnitude of the driving voltage. | 06-18-2009 |
20100202160 | POWER CONVERTER TRANSFORMER FOR SUPPRESSING CONDUCTION EMI AND POWER SUPPLY HAVING ITS TRANSFORMER - In accordance with the present invention, a power converter transformer for suppressing conduction EMI(ElectroMagnetic Interference) includes a primary winding positioned at a primary side; a secondary winding positioned at a second side and coupled with the primary winding; a parasitic capacitor connected between one end of the primary winding and one end of the secondary winding; a switching unit connected to the other end of the primary winding; a Y-capacitor connected between the switching unit and a ground terminal; an auxiliary winding positioned at the secondary side and coupled with the secondary winding; and an auxiliary capacitor connected between the one end of the primary winding and the auxiliary winding. | 08-12-2010 |
20100237799 | LED DRIVING CIRCUIT - The present invention provides an LED driving circuit including: an inverter unit for switching an input power source; a plurality of transformers including a plurality of primary windings connected to the inverter unit and connected to each other in series and a plurality of secondary windings each of which is coupled with each of the primary windings; a plurality of rectification units each of which is connected to each of the secondary windings; and a plurality of LEDs each of which is connected to each of the rectification units. | 09-23-2010 |
20120223797 | CHOKE COIL - Provided is a choke coil including: a first primary winding portion formed by winding a primary coil by n turns; a second primary winding portion formed by winding the primary coil by N turns; a first secondary winding portion formed by winding a secondary coil by N turns; and a second secondary winding portion formed by winding the secondary coil by n turns, wherein the n and N satisfy the condition: n≦N. | 09-06-2012 |
20140084790 | ELECTROMAGNETIC INTERFERENCE FILTER, AND POWER SUPPLY APPARATUS AND DISPLAY APPARATUS INCLUDING THE SAME - There are provided an electromagnetic interference filter for removing common mode electromagnetic interference, in which electromagnetic interference of a low frequency band and a high frequency band is removed in a single filter because of a wide block frequency band, a power supply apparatus including the electromagnetic interference filter, and a display apparatus including the electromagnetic interference filter. The electromagnetic interference filter includes a core part including at least two legs electromagnetically coupled and forming a closed magnetic circuit; a coil part including first and second rectangular copper wires respectively wound in a single layer around the at least two legs and removing common mode electromagnetic interference included in power transferred from a power line; and a support part having a mounting area in which the core part having the coil part wound therearound is mounted. | 03-27-2014 |
20150061817 | COIL COMPONENT AND ELECTRONIC MODULE USING THE SAME - A coil component may include: a base board having an accommodation portion disposed therein and having conductive patterns disposed within the accommodation portion; an annular core disposed in the accommodation portion; and a laminated board laminated on the base board and having conductive patterns disposed on one surface thereof. The conductive patterns of the laminated board are connected to the conductive patterns of the base board to form a coil. | 03-05-2015 |
20150070121 | COIL COMPONENT AND METHOD OF MANUFACTURING THE SAME - There are provided a coil component and a method of manufacturing the same. The coil component includes a core; at least one bobbin coupled to the core and having a coil wound therearound; and a base having the core seated therein and including an external connection terminal, wherein one side of the core is seated in the bobbin and the other side thereof is exposed to the outside of the base. | 03-12-2015 |
Patent application number | Description | Published |
20090231885 | INTEGRATED TRANSFORMER AND POWER SUPPLY USING THE SAME - There are provided an integrated transformer in which a power conversion transformer and an inductor for stabilizing output power by the transformer are integrated into one transformer structure, and a power supply using the same. An integrated transformer according to an aspect of the invention includes: a core part including: first and second supports; and first and second outer legs and a center leg provided between the first and second supports, and magnetically connecting the first and second supports to each other, wherein a cross-section of the first and second outer legs and a cross-section of the center leg have a width of the first support and a width of the second support in a longitudinal direction, respectively, and a width of each of the first and second outer legs exceeds 0.5 times a width of the center leg but does not exceed 2 times the width of the center leg. | 09-17-2009 |
20090251120 | HIGH VOLTAGE POWER SUPPLY - There is provided a high voltage power supply capable of reducing voltage stress of a voltage multiplying device. The high voltage power supply includes: a power converter switching on/off and converting an input direct current power into a direct current power having a preset voltage level; and a voltage multiplier including a first multiplying cell multiplying the voltage level of the direct current power from the power converter, wherein the first multiplying cell includes: first and second capacitors charging the direct current power from the power converter, respectively; a first diode providing a path for transferring the direct current power when the power converter is switched off; and a second diode providing a path for transferring the direct current power when the power converter is switched on. | 10-08-2009 |
20090316447 | POWER SUPPLY HAVING MAXIMUM POWER POINT TRACKING FUNCTION - The present invention relates to power supplies, and more particularly, to a power supply having a maximum power point tracking function that can reduce manufacturing costs and circuit size by using a maximum power point tracking section with a simplified circuit in a solar photovoltaic power generator supplying power using sunlight instead of using a micro controller, the maximum power point tracking section that controls power switching according to a result of integration of a value obtained by dividing a power variation by a voltage variation to track a maximum power value. A power supply having a maximum power point tracking function according to an aspect of the invention may include: a converter section switching input power, and converting the switched input power into predetermined DC power; and a maximum power point tracking section detecting a voltage and a power value of the input power, dividing a variation of the detected power by a variation of the detected voltage, integrating a result of the division, and controlling the switching operation of the converter section according to a value of the integration. | 12-24-2009 |
20090316452 | POWER SUPPLY HAVING MAXIMUM POWER POINT TRACKING FUNCTION - The present invention relates to power supplies, and more particularly, to a power supply having a maximum power point tracking function that controls power switching so that a detected power value is within a reference range having a maximum power point in a predetermined current-voltage curve. A power supply having a maximum power point tracking function according to an aspect of the invention includes: a converter section switching input power and converting the switched input power into predetermined DC power; and a maximum power point tracking section detecting a power value determined according to a switching operation of the converter section among power values included in a predetermined power-voltage curve, and controlling the switching operation of the converter section so that the detected power value is located within a predetermined reference range having a maximum power value among the power values included in the power-voltage curve. | 12-24-2009 |
20100014321 | VARIABLE SWITCHING FREQUENCY TYPE POWER SUPPLY - There is provided a variable switching frequency type power supply that can achieve high efficiency by fixing a switching duty cycle to 50% and varying switching frequency. A variable switching frequency type power supply according to an aspect of the invention may include: a switching unit switching input power; a transformation unit converting a voltage level of the power switched by the switching unit into a predetermined voltage level; a rectification unit rectifying the power converted by the transformation unit; and a control unit fixing a switching duty cycle of the switching unit to a predetermined switching duty cycle, and varying switching frequency of the switching unit according to a voltage level of output power. | 01-21-2010 |
20100156185 | PHOTOVOLTAIC AND FUEL CELL HYBRID GENERATION SYSTEM USING SINGLE CONVERTER AND SINGLE INVERTER, AND METHOD OF CONTROLLING THE SAME - There are disclosed a photovoltaic and fuel cell (PV-FC) hybrid generation system using a single converter and a single inverter, and a method of controlling the same. The PV-FC hybrid generation system includes a DC/DC converter unit converting an FC output voltage from a fuel cell, converting chemical energy into electrical energy, into a preset voltage, a DC link unit commonly connecting an output terminal of a photovoltaic cell, converting the sunlight into electrical energy, and an output terminal of the DC/DC converter unit, and linking the converted FC output voltage from the DC/DC converter unit with a PV output voltage from the photovoltaic cell to thereby generate a DC voltage, and a DC/AC inverter unit converting the DC voltage from the DC link unit into a preset AC voltage. Furthermore, a method of controlling the PV-FC hybrid generation system is proposed. | 06-24-2010 |
20100156186 | PHOTOVOLTAIC AND FUEL CELL HYBRID GENERATION SYSTEM USING DUAL CONVERTERS AND SINGLE INVERTER AND METHOD OF CONTROLLING THE SAME - There is provided a photovoltaic and fuel cell hybrid generation system using dual converters and a single inverter and a method of controlling the same. A photovoltaic and fuel cell (PV-FC) hybrid generation system according to an aspect of the invention may include: a PV DC/DC converter unit converting a PV output voltage into a predetermined voltage; an FC DC/DC converter unit converting an FC output voltage into a predetermined voltage; a DC link unit commonly connecting an output terminal of the PV DC/DC converter unit and an output terminal of the FC DC/DC converter unit, and linking the converted PV output voltage from the PV DC/DC converter unit to the converted FC output voltage from the FC DC/DC converter unit to thereby generate a DC voltage; and a DC/AC inverter unit converting the DC voltage from the DC link unit into a predetermined AC voltage. | 06-24-2010 |
20110273112 | LIGHT EMITTING DRIVER - There is provided a light emitting driver. A light emitting driver according to an aspect of the invention may include: an LED driving section driving a light emitting part according to a detection value of the light emitting part including a plurality of light emitting devices; and a detection section transmitting the detection value to the LED driving section according to a detection voltage corresponding to a magnitude of a driving current flowing through the light emitting part when an output voltage, being applied to the light emitting part, has a value smaller than a predetermined output voltage reference value, and transmitting the detection value to the LED driving section according to a magnitude of the output voltage. | 11-10-2011 |
20120154091 | INTEGRATED ELECTROMAGNETIC INTERFERENCE FILTER - Disclosed is an integrated electromagnetic interference filter capable of providing a leakage inductance sufficient to filter the differential mode electromagnetic interference by integrating four inductors for interference filtering in one core structure and controlling the coupling degree between the four inductors for interference filter. | 06-21-2012 |
20120154363 | LINE FILTER AND FLAT PANEL DISPLAY DEVICE USING THE SAME - There are provided a line filter and a flat panel display device using the same. The line filter includes: first and second bobbins each including a pipe shaped body part having a through-hole formed therein and a flange part protruding outwardly from both ends of the body part; a core inserted into the through-hole to thereby form a magnetic path; and a coil part including coils, each wound in the first and second bobbins, wherein the coil wound in one of the first and second bobbins is wound clockwise and the coil wound in the other thereof is wound counterclockwise. | 06-21-2012 |
20120319614 | TRANSFORMER AND DISPLAY DEVICE USING THE SAME - There is provided a transformer having a minimized leakage inductance. The transformer includes: a winding part including a pipe shaped body part having a plurality of coils wound therearound and flange parts extended from both ends of the body part in an outer diameter direction thereof; and a core coupled to the winding part, wherein a flange part formed at one end of the body part includes at least one lead groove, and the coils are led to the outside of the winding part through the at least one lead groove. | 12-20-2012 |
20120320504 | TRANSFORMER AND DISPLAY DEVICE USING THE SAME - There is provided a transformer having a minimized leakage inductance. The transformer includes: a bobbin including a plurality of partitioned spaces; and a plurality of coils wound and stacked in the plurality of partitioned spaces, wherein the respective coils are wound so as to be disposed in the plurality of partitioned spaces, and at least one of the coils is a multi-insulated coil. | 12-20-2012 |
20120320505 | TRANSFORMER AND DISPLAY DEVICE USING THE SAME - There is provided a transformer having a minimized leakage inductance. The transformer includes: a bobbin including at least one partition wall formed on an outer peripheral surface of a pipe shaped body part thereof; a plurality of coils wound and stacked on the body part; and a core electromagnetically coupled to the coils to thereby form a magnetic path, wherein the respective coils are disposed in a plurality of spaces partitioned by the at least one partition wall. | 12-20-2012 |
20130002386 | TRANSFORMER AND DISPLAY DEVICE USING THE SAME - There is provided a transformer capable of significantly reducing leakage inductance while satisfying safety standards. The transformer includes: a winding part having a plurality of coils wound on an outer peripheral surface of a pipe shaped body part while being stacked thereon; and a terminal connection part extended from one end of the winding part in an outer diameter direction thereof and having a plurality of external connection terminals coupled to a distal end thereof, the terminal connection part including at least one catching groove formed such that the coils are led to the outside of the winding part therethrough, and a lead wire of at least one of the coils being led to the outside of the winding part while maintaining a winding direction of the coils. | 01-03-2013 |
20130154782 | COIL COMPONENT AND METHOD OF MANUFACTURING THE SAME - There are provided a coil component and a method of manufacturing the same. The coil component includes a core; at least one bobbin coupled to the core and having a coil wound therearound; and a base having the core seated therein and including an external connection terminal, wherein one side of the core is seated in the bobbin and the other side thereof is exposed to the outside of the base. | 06-20-2013 |
20130170085 | POWER SUPPLY APPARATUS INCLUDING OVERVOLTAGE PROTECTION FUNCTION - There is provided a power supply apparatus including an overvoltage protection function, the power supply apparatus including: a power supply unit supplying a predetermined input power supply; a rectification unit generating a first power supply by rectifying the input power supply; a main circuit unit generating a second power supply from the first power supply; and an overvoltage blocking unit blocking overvoltages and overcurrents, wherein the overvoltage blocking unit includes varistors connected between at least one of a live line and a neutral line of the input power supply and a ground. | 07-04-2013 |
20130320753 | COIL COMPONENT, AND ELECTRONIC DEVICE AND POWER OVER ETHERNET SYSTEM HAVING THE SAME - There are provided a coil component in which a plurality of coil parts are integrated in a single component, and an electronic device and a Power over Ethernet (PoE) system having the same. The coil component includes: a base having external connection terminals fastened thereto; a core coupled to the base; and a plurality of coil parts electromagnetically coupled to the core through a coil wound around the core. | 12-05-2013 |
20140176289 | ELECTROMAGNETIC INTERFERENCE FILTER AND METHOD OF MANUFACTURING THE SAME - There are provided an electromagnetic interference filter and a method of manufacturing the same. The electromagnetic interference filter includes a base core including a first base core and a second base core facing the first base core, a leg core including first and second leg cores disposed between the first base core and the second base core, the first and second leg cores facing each other, a winding coil part including first and second winding coils wound around the first and second leg cores, respectively, and connected to a power supply, the first and second winding coils respectively providing magnetizing inductance and leakage inductance, and a central core disposed between the first and second cores to provide an inductance leakage path between the first and second base cores. | 06-26-2014 |