A residual current device includes an insulating housing, an electromagnetic induction module, a leakage current detecting module and an electromagnetic shielding structure. The insulating housing includes a base and a lid. The electromagnetic induction module is disposed in the base. The electromagnetic induction module includes a core base and an iron core. The leakage current detecting module is disposed in the base. The leakage current detecting module includes a circuit board assembly, a detecting circuit disposed on the circuit board assembly and a lead frame electrically connected to the circuit board assembly. The electromagnetic shielding structure is disposed in the base and covers the leakage current detecting module. The effect of preventing electromagnetic interference is achieved.

An inductive component has at least one conductor loop arranged on a printed circuit board and at least one core made of inductive material that cooperates inductively with the conductor loop. The printed circuit board comprises an upper face, a lower face and narrow faces, and moreover at least two printed circuit board parts. Each printed circuit board part has a part of the at least one conductor loop. At least one of the printed circuit board parts comprises a first and a second contact portion. The first contact portion is connected to a first face, in particular the upper face, of the second printed circuit board part and the second contact portion is connected to a second face, in particular the lower face, of the second printed circuit board part, which second face is different from the first face.

A reactor includes: a reactor main body including a core formed of a powder magnetic core, a resin member covering the circumference of the core, and a coil wound around the outer circumference of the resin member; a casing which includes a bottom surface and a side wall standing upright therefrom, and which houses therein the reactor main body; and a filler molding portion formed of a cured filler, and fastening the reactor main body to the casing. The resin member is provided with a bottom opening provided in an end surface that faces the bottom surface of the casing and exposing the core, and a back-side opening provided in an end surface orthogonal to the winding direction of the coil and facing the side wall, and exposing the core. The back-side opening is provided with exposing portions which is not covered with the filler molding portion and is exposed.

A power inductor includes a housing and a magnetic core disposed in the housing. The core includes a first segment and a second segment spaced apart from each other to define a gap. The first and second segments are supported in the housing such that they are movable relative to each other to increase and decrease the size of the gap. A passive actuator is disposed in the housing and is configured to move the second segment relative to the first segment to increase and decrease the size of the gap. The passive actuator includes a shape-memory alloy configured to expand as temperature of the inductor increases to urge the first and second segments apart to increase the gap and to contract as the temperature decreases so that the first and second segments move towards each other to decrease the gap.

An inductor skeleton structure includes a pedestal and a main winding part. The pedestal includes a base, a fixing part and an auxiliary winding part, the fixing part is disposed on the base, and the auxiliary winding part is extended away from the base from a side surface; the main winding part has a main winding groove; the main winding part is fixed on a side of the base by the fixing part; the auxiliary winding part is used for winding an auxiliary coil capable of covering at least a portion of the welding surface; and the auxiliary coil is flush with or beyond the fitting surface.

An inductive power outlet operable to transfer power to an inductive power receiver includes a driver wired to a primary inductive coil and operable to provide a driving voltage across the primary inductive coil. The primary inductive coil is configured to form an inductive couple having a characteristic resonant frequency with at least one secondary inductive coil wired to an electric load, the secondary inductive coil being associated with the inductive power receiver. The driving voltage oscillates at a transmission frequency substantially different from the characteristic resonant frequency of the inductive couple.

A core for a torque detection sensor includes a first laminated core in which first teeth are provided to protrude in a radial direction at plural places from an annular first core back formed by laminating a plurality of magnetic sheet materials, and a second laminated core in which second teeth are provided to protrude in the radial direction at plural places from an annular second core back formed by laminating a plurality of magnetic sheet materials, in which the first laminated core and the second laminated core are stacked so that the first teeth and the second teeth are in staggered arrangement in a circumferential direction.

A pin structure of a transformer bobbin is provided. The transformer bobbin includes a winding part on which at least one winding is wound, and at least one wire outlet part arranged on a side of the winding part. The pin structure includes at least two accommodating slots arranged at the wire outlet part, and at least two conductive pins. Each of the accommodating slots has two first sections and a second section connected to the two first sections. Each of the conductive pins corresponds to one of the accommodating slots, and includes a connection section in the second section and two exposed sections connected to the connection section and extending to an outside of the winding part via the two first sections. One exposed section can perform socket welding, and the other one is bendable to define the end of the winding with the wire outlet part.

A plurality of teeth are provided to protrude in staggered arrangement in an annular core in a circumferential direction, coils are respectively wound around the respective teeth, and when the respective coils are energized, corresponding teeth are excited to thereby form a plurality of magnetic circuits having an inclination of +45 degrees or −45 degrees with respect to an axial center direction of an object to be detected between the teeth and the facing object to be detected.

The present disclosure relates to an inductor including a coil, an inner core disposed inside the coil, and an outer core formed in a rectangular ring shape to accommodate the coil and the inner core therein, wherein the inner core is manufactured separately from the outer core, and at least one end of both ends of the inner core in an axial direction is spaced apart from the outer core.