The present invention provides a wireless charging cable, a wireless charging coil structure and a producing method thereof, and a wireless charging device. The wireless charging cable has a conductive wire, an alloy layer and an insulation layer. The alloy layer is electroplated on an outer surface of the conductive wire and composed of nickel and iron, the insulation layer is coated on an outer surface of the alloy layer, wherein a better range of the cable diameter of the wireless charging cable is between 0.1 and 0.5 mm. The wireless charging coil structure has a sewed object and a sewing wire material including the wireless charging cable. The sewing wire material is sewed on the sewed object, and the wireless charging cable is sewed to become a wireless charging coil.

An endoscope includes a body and a circuit board mounted within the body. A cable couples the circuit board to an imaging system. A common-mode choke is mounted within the body and is configured to electrically isolate the cable from the body at cautery frequencies. A method includes twisting a plurality of wires together to form a twisted set of wires. The twisted set of wires is wound around a core so that windings do not overlap, and so that a first winding and a last winding are separated from each other. Wires in the twisted set of wires are coupled to a plurality of wires in the cable. Also, these wires in the twisted set of wires are also coupled to the circuit board.

Transformers having a plurality of windings from a single Litz wire, as well as systems including such transformers and methods of providing such transformers are disclosed. A transformer includes a core and a single Litz wire having a plurality of individual strands of conductive material. The plurality of individual strands of conductive material are separated into a plurality of groups, each one of the plurality of groups being a winding of the transformer such that the transformer comprises a plurality of windings.

Transformers having a plurality of windings from a single Litz wire, as well as systems including such transformers and methods of providing such transformers are disclosed. A transformer includes a core and a single Litz wire having a plurality of individual strands of conductive material. The plurality of individual strands of conductive material are separated into a plurality of groups, each one of the plurality of groups being a winding of the transformer such that the transformer comprises a plurality of windings.

In each coil (10), between a first radial section formed by a winding-start section (10a) and a second radial section formed by a winding-end section (10b) of a winding (10A), the circumferential lengths of the winding lap sections formed by said winding change in a continuous or stepped manner. For a first coil, the sequences within two slots (22) of the winding constituting the first coil are reversed with respect to one another by a twisted section (10d) between a first coil end (12a) and a second coil end (12b) of the first coil. The first coil and next second coil form a lap winding in which the twisted sections of the first and second coils are three-dimensionally entwined. The lap winding of said twisted sections continues for the third and subsequent coils, and the first coil end and the second coil end of each coil are continuous without spaces at the end surfaces of a core (20).

In each coil (10), between a first radial section formed by a winding-start section (10a) and a second radial section formed by a winding-end section (10b) of a winding (10A), the circumferential lengths of the winding lap sections formed by said winding change in a continuous or stepped manner. For a first coil, the sequences within two slots (22) of the winding constituting the first coil are reversed with respect to one another by a twisted section (10d) between a first coil end (12a) and a second coil end (12b) of the first coil. The first coil and next second coil form a lap winding in which the twisted sections of the first and second coils are three-dimensionally entwined. The lap winding of said twisted sections continues for the third and subsequent coils, and the first coil end and the second coil end of each coil are continuous without spaces at the end surfaces of a core (20).

A method for manufacturing a coil component that can contribute to prevention of durability degradation of a wire. The method includes winding a plurality of wires, that are supplied from a wire supply source to a nozzle through a tensioner, around a core by revolving the core around the nozzle. Also, during the winding, the core is rotated in a direction same as or opposite to a revolution direction of the core.

A method for manufacturing a coil component that can contribute to prevention of durability degradation of a wire. The method includes winding a plurality of wires, that are supplied from a wire supply source to a nozzle through a tensioner, around a core by revolving the core around the nozzle. Also, during the winding, the core is rotated in a direction same as or opposite to a revolution direction of the core.

A method of manufacturing a winding-type electronic component using stranded wires which can suppress a disconnection of a winding when a plurality of windings is twisted. The method of manufacturing a winding-type electronic component includes: a preparation step of allowing a chuck to hold a core having a winding core portion (14) and flange portions; a first step of fixing a portion of each of windings supplied from nozzles (N1, N2) to the flange portion; and a second step of twisting the windings by rotating the chuck.

A method of manufacturing a winding-type electronic component using stranded wires which can suppress a disconnection of a winding when a plurality of windings is twisted. The method of manufacturing a winding-type electronic component includes: a preparation step of allowing a chuck to hold a core having a winding core portion (14) and flange portions; a first step of fixing a portion of each of windings supplied from nozzles (N1, N2) to the flange portion; and a second step of twisting the windings by rotating the chuck.