Abstract: A transformer, according to one possible embodiment, includes: a bobbin part formed by stacking a plurality of bobbins including external connection terminals; and coils respectively wound around the plurality of bobbins. At least one bobbin of the plurality of bobbins includes withdrawing grooves formed in a space between the external connection terminals, the respective coil wound around the at least one bobbin being withdrawn outside the bobbin via the withdrawing grooves and coupled to the external connection terminal.

Abstract: A resistive memory device implements a selective refresh operation in which only memory cells with reduced sense margin are refreshed. In some embodiments, the selective refresh operation introduces a sense margin guardband so that a memory cell having programmed resistance that falls within the sense margin guardband will be refreshed during the read operation. The selective refresh operation is performed transparently at each read cycle of the memory cells and only memory cells with reduced sense margins are refreshed.

Abstract: A method in a resistive memory device includes configuring two or more memory cells in a column of the array sharing the same bit line and the same source line to operate in parallel as a merged memory cell; programming the resistance of the merged memory cell in response to the write data, the resistance of the two or more resistive memory cells in the merged memory cell being programmed simultaneously; and reading the programmed resistance value of the merged memory cell, the programmed resistance of the two or more memory cells in the merged memory cell being read simultaneously.

Abstract: A coil component includes a first coil part including a multilayer substrate on which a conductor pattern is formed, a second coil part formed as a wire and stacked together with the first coil part, a core coupled to the first and second coil parts while penetrating through the first and second coil parts to thereby be electromagnetically coupled to the first and second coil parts, and a pressing member interposed between the core and the second coil part to allow the first and second coil parts to closely adhere to each other.

Abstract: The coil component includes a core, first and second coil parts coupled to the core while being stacked with each other, and an insulating member accommodating the second coil part therein. In addition, the second coil part is formed of a flat-type wire.

Abstract: A resistive memory device implements a selective refresh operation in which only memory cells with reduced sense margin are refreshed. In some embodiments, the selective refresh operation introduces a sense margin guardband so that a memory cell having programmed resistance that falls within the sense margin guardband will be refreshed during the read operation. The selective refresh operation is performed transparently at each read cycle of the memory cells and only memory cells with reduced sense margins are refreshed.

Abstract: A resistive memory device incorporates a reference current generation circuit to generate a reference current for the sense amplifier that is immune to variation in the resistance of the reference resistive memory cells. In some embodiments, the reference current generation circuit uses reference resistive memory cells configured in the low resistance state only. The reference current generation circuit generates the reference current by combining a reference cell current and a bias current. The bias current is regulated by a feedback circuit in response to changes in the reference current to maintain the reference current at a substantially constant value and having a current value being an average of the cell currents for a resistive memory cell in the high resistance state and the low resistance state.

Abstract: A method in a resistive memory device includes configuring two or more memory cells in a column of the array sharing the same bit line and the same source line to operate in parallel as a merged memory cell; programming the resistance of the merged memory cell in response to the write data, the resistance of the two or more resistive memory cells in the merged memory cell being programmed simultaneously; and reading the programmed resistance value of the merged memory cell, the programmed resistance of the two or more memory cells in the merged memory cell being read simultaneously.

Abstract: A resistive memory device incorporates a reference current generation circuit to generate a reference current for the sense amplifier that is immune to variation in the resistance of the reference resistive memory cells. In some embodiments, the reference current generation circuit uses reference resistive memory cells configured in the low resistance state only. The reference current generation circuit generates the reference current by combining a reference cell current and a bias current. The bias current is regulated by a feedback circuit in response to changes in the reference current to maintain the reference current at a substantially constant value and having a current value being an average of the cell currents for a resistive memory cell in the high resistance state and the low resistance state.

Abstract: A coil component capable of being easily manufactured while significantly reducing a size thereof, and a manufacturing method thereof, the coil component including: a first coil part including a stacked substrate on which a first coil pattern is formed; a second coil part including a main substrate on which a second coil pattern is formed and a plurality of electronic components are mounted; a core penetrating through the first and second coil parts and coupled to the first and second coil parts; and an insulating member securing an insulation distance between the second coil pattern and the electronic components mounted on the main substrate.

Abstract: A transformer including: a primary coil part including a multilayer substrate in which a plurality of substrates having coil patterns are stacked; a secondary coil part having the number of coil turns different from that of the primary coil part, positioned on at least one of upper and lower surfaces of the multilayer substrate, and including a conductor wire and an insulating material coating the conductor wire; and a shielding part disposed on the primary coil part and including at least one substrate on which a shielding pattern is provided

Abstract: A transformer may include: a primary coil part including a plurality of substrates on which coil patterns are formed; a secondary coil part including an insulated coil; and a shielding part formed on the primary coil part and including one or more substrates on which a shielding pattern is formed.

Abstract: A transformer includes a magnetic core, a first coil unit and a second coil unit. The first coil unit is disposed within the magnetic core and includes a laminated board having layers laminated therein and conductive patterns. Respective ones of the conductive patterns are disposed on the laminated layers. The second coil unit includes a conductive wire spaced apart from the conductive patterns of the laminated board by an insulating distance. The conductive wire includes a triple-insulated wire surrounded by three sheets of insulating paper to maintain the insulating distance from the conductive patterns.

Abstract: A transformer includes a magnetic core, a first coil unit and a second coil unit. The first coil unit is disposed within the magnetic core and includes a laminated board having layers laminated therein and conductive patterns. Respective ones of the conductive patterns are disposed on the laminated layers. The second coil unit includes a conductive wire spaced apart from the conductive patterns of the laminated board by an insulating distance. The conductive wire includes a triple-insulated wire surrounded by three sheets of insulating paper to maintain the insulating distance from the conductive patterns.

Abstract: A transformer includes a magnetic core, a first coil unit and a second coil unit. The first coil unit is disposed within the magnetic core and includes a laminated board having layers laminated therein and conductive patterns. Respective ones of the conductive patterns are disposed on the laminated layers. The second coil unit includes a conductive wire spaced apart from the conductive patterns of the laminated board by an insulating distance. The conductive wire includes a triple-insulated wire surrounded by three sheets of insulating paper to maintain the insulating distance from the conductive patterns.

Abstract: There are provided a coil component having external connecting terminals firmly coupled to a bobbin thereof, and a method of manufacturing the same. The coil component includes: a bobbin having a coil wound therein; and at least one external connecting terminal coupled to the bobbin so that one end thereof protrudes outwardly, wherein the external connecting terminal includes a terminal pin inserted into the bobbin and an extension part enlarges a cross-sectional area of the terminal pin in the bobbin.

Abstract: There is provided a coil component having a significantly reduced size and able to be easily manufactured, the coil component including a winding part formed as a groove having a ring shape; a plurality of coils inserted into and wound in the winding part; and a sealing part filling an internal space of the winding part having the coils wound therein and embedding the coils therein.

Abstract: 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.

Abstract: 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.

Abstract: A transformer includes a magnetic core, a first coil unit and a second coil unit. The first coil unit is disposed within the magnetic core and includes a laminated board having layers laminated therein and conductive patterns. Respective ones of the conductive patterns are disposed on the laminated layers. The second coil unit includes a conductive wire spaced apart from the conductive patterns of the laminated board by an insulating distance. The conductive wire includes a triple-insulated wire surrounded by three sheets of insulating paper to maintain the insulating distance from the conductive patterns.