Provided is an inductor winding method and an inductor winding device. The inductor winding method comprises steps of: A. dividing turns of coil of each winding of the inductor into a first winding and a second winding based on a preset ratio; B. winding the first winding on one of multiple magnetic columns, and winding the second winding on another one of the multiple magnetic columns which is different from the magnetic column on which the first winding is wound; and C. performing step A and step B cyclically until all the windings of the inductor are wound. With a coupling inductor having interleaving-wound structure, power frequency magnetic fluxes generated by magnetic lines in magnetic columns counteract one another, thereby solving the problem of high magnetic flux density in a magnetic core while achieving certain leakage inductance.

A quad-T transformer in some embodiments includes a first split winding, a second split winding, and two orthogonal closed-loop windings coupled between the first split winding and the second split winding. Wires can be wound around magnetic cores. A first of the two orthogonal closed-loop windings is coupled to a first portion of each of the first split winding and the second split winding. A second of the two orthogonal closed-loop windings is coupled to a second portion of each of the first split winding and the second split winding. A bi-directional single-phase/three-phase converter includes the quad-T transformer and a Scott-T transformer with an output connected to a three-phase connection. The Scott-T transformer also has a 90-degree input connected to the quad-T transformer and a zero-degree input connected to a single-phase connection.

A coil component includes a drum-shaped core including a core portion that extends in a length direction of the coil component and a first flange portion provided on a first end portion of the core portion, and first and second terminal electrodes provided on the first flange portion. The first and second terminal electrodes each include a base electrode formed on a surface of the first flange portion and a plating layer that covers the base electrode. The base electrode includes a bottom-surface base electrode portion on a bottom surface, an end-surface base electrode portion on an end surface, and a side-surface base electrode portion on a first side surface. The end-surface base electrode portion has a height greater than that of the first crotch portion. The side-surface base electrode portion has a height less than that of the first crotch portion.

Systems and devices for providing differential input/output communication with a superconducting device are described. Each differential I/O communication is electrically filtered using a respective tubular filter structure incorporating superconducting lumped element devices and high frequency dissipation by metal powder epoxy. A plurality of such tubular filter structures is arranged in a cryogenic, multi-tiered assembly further including structural/thermalization supports and a device sample holder assembly for securing a device sample, for example a superconducting quantum processor. The interface between the cryogenic tubular filter assembly and room temperature electronics is achieved using hermetically sealed vacuum feed-through structures designed to receive flexible printed circuit board cable.

Disclosed herein is a common mode filter that includes first and second wires wound in the same direction around the winding core part. The first and second wires include first and second layer winding portions each including a plurality of blocks axially alternately arranged. A first block belonging to the first layer winding portion is disposed closest to the first flange part. A second block belonging to the second layer winding portion is disposed closest to the second flange part. The first and second wires cross each other in a region between axially adjacent blocks.

A coil component comprising a wire including the core wire made of copper or a copper alloy and an insulating coating film made of resin that covers a peripheral surface of the core wire, and a terminal electrode including a nickel-containing layer made of nickel or a nickel alloy and covering a bottom surface of a flange portion, and a tin-containing layer located on the nickel-containing layer and made of tin or a tin alloy. The terminal of the core wire has a contact surface in contact with the nickel-containing layer, side surfaces extending in a direction rising from the nickel-containing layer, and a top surface facing the contact surface. The side surfaces have a region not in contact with the tin-containing layer at least on a top surface side. In the region, copper of the core wire is not diffused into the tin-containing layer.

A coil component comprises a first wire including a winding portion wound around a winding core portion of a core, a first end portion electrically connected to a terminal electrode provided in a first flange portion, and a first extended portion connecting the winding portion and the first end portion. In a first direction, the first end portion is positioned on a first side with respect to a central axis of the winding core portion, and a first boundary portion which is a boundary portion between the first extended portion and the winding portion is positioned on a second side with respect to the central axis. A corner of the winding core portion is positioned between the first boundary portion and the first end portion in a circumferential direction. A gap is interposed between the first extended portion and the corner.

A coil component includes a core, terminal electrodes, and a wire. The core includes a winding core and a pair of flanges. Each flange of the pair of flanges is disposed on the corresponding one of two ends of the winding core. The terminal electrodes are at the flanges. The wire is wound around the winding core. Two ends of the wire are electrically connected to the respective terminal electrodes. The terminal electrodes each include an electrode main body part and an anchor part that extends from the electrode main body part and is lodged in the core.

Disclosed herein is a coil component that includes a core, first to fourth terminal electrodes provided on a first flange part, fifth to eighth terminal electrodes provided on a second flange part, first and second wires bifilar wound around a winding core part, and third and fourth wires bifilar wound around the winding core part. One and other ends of the first to eighth wires are connected corresponding one of the first to eighth terminal electrodes. The first and second wires cross each other in a first crossing area. The third and fourth wires cross each other in a second crossing area different from the first crossing area.

A coil component includes a columnar winding core and flanges at ends of the winding core in positive and negative X directions and which protrude outward in a Z direction orthogonal to the X direction. A first wire is wound around the winding core. A metal terminal attached to the flange includes a reception portion extending away from the winding core in a length direction. A direction in which a dimension of the reception portion is the smallest in directions orthogonal to the length direction is a thickness direction, and a width direction is orthogonal to the length and thickness directions. The reception portion and the first wire are connected by a melted portion whose maximum dimension in the width direction is larger than a maximum dimension of the reception portion in the width direction and is at a portion away from the reception portion in the thickness direction.