An ignition device includes a case having an opening and a bottom wall, a coil bobbin arranged in the case having a through hole, a first end and a second end, an ignition coil wound around the coil bobbin, a core made of magnetic material and projecting from the opening and from the bottom wall, and extending through the coil bobbin, a retainer having a ring portion and multiple leg portions extending from the ring, and a filling resin in the case. The core extends through the ring portion and the leg portions extend in between an inner surface of the coil bobbin and an outer peripheral surface of the core toward the bottom wall, and the case is filled with the filling resin in a manner that at least a part of the ring portion is not covered by the resin.

The invention comprises a harmonic filter apparatus and method of use thereof for magnetically isolating and filtering individual phases of three-phase power comprising a delta circuit that includes: (1) a first leg connecting to a second leg and a third leg and (2) first circuitry on the first leg matching second circuitry on the second leg, the first circuitry comprising at least two contactors electrically wired in parallel, the harmonic filter magnetically isolating individual phases of three-phase power, where inductor—coupled inductor pairs couple apexes of the delta circuit to individual phases of the three-phase power.

There is provided an electromagnetic device comprising multiple inductors. Each inductor having windings arranged near or on a single core, in which the device is configured such that the multiple inductors are substantially independent or magnetically isolated from one another.

A compensation structure for reducing circulating current in a window of a transformer, the transformer having a winding, a metal frame and leads located at one side of the frame and spaced apart from the frame. The frame has borders and an iron core located inside a window enclosed by the borders. The winding is provided around the iron core, wherein the compensation structure includes at least one compensator on the borders of the frame. The compensator is made of silicon steel sheets of a magnetic material, and the compensator separates at least a part of the borders of the frame from a part of the leads. The compensation structure separates iron structures between a high-voltage side and a low-voltage side, increases the impedance between the window circuit of the frame and the current circuit of external leads, thereby reducing the induced current within the frame and avoiding harmful effects.

The disclosed is the power saving device capable of reducing power consumption by maintaining a constant output voltage even when an input voltage changes, and more particularly, the power saving device capable of improving the performance and lifespan of a load by stably adjusting a supplied voltage through the toroidal core, the multi-channel switch, and the control means for controlling the same and then supplying it to the load side and also reducing power consumption accordingly, and particularly, safely and firmly fixing the toroidal core in which the primary coil and the secondary coil are wound inside the power saving device by using the core fixing members and also preventing a temperature rise by easily discharging the heat generated in the toroidal core out of the device.

A resonance damping element for a power converter having a positive busbar and a negative busbar, wherein the resonance damping element comprises a magnetic core formed with two openings through which the positive busbar and the negative busbar of the power converter are to be routed, respectively.

The present invention provides a current transformer module that can achieve downsizing and keeping the creepage distance of insulation simultaneously. The current transformer module 12 according to the present invention comprises a current transformer 10 and a casing 80 for housing the current transformer, wherein the current transformer includes a resin-made bobbin 20 with a through hollow section 21 and a core 30 having legs 42 inserted at least into the hollow section, the bobbin having a primary coil 26 and a wire-wound secondary coil 27 on the outer periphery of the hollow section, wherein the bobbin has insulation walls 22, 24 between the primary coil and the secondary coil wherein the insulation wall has recesses 23,25, and wherein the casing are provided with protrusions 83, 87 adapted to fit into the recesses.

An integrated magnetic device includes a bobbin having a through hole. A center column magnetic core groove is arranged in the middle of the bobbin to divide the bobbin into a first bobbin and a second bobbin, the center column magnetic core groove is inserted with a center column magnetic core, the first bobbin and the second bobbin are both provided with a side magnetic core for forming a closed loop with the center column magnetic core, the side magnetic core includes a center column inserted in the through hole, a first winding groove for winding a magnetic device winding of a Boost circuit is provided between side walls of the first bobbin, and a second winding groove for winding a magnetic device winding of an LLC circuit is provided between side walls of the second bobbin.

A component having a winding carrier, at least one winding, a magnetic core and first and second connections. The winding carrier surrounds at least regions of the core in such a way that an insulation section between the connections along an underside of the component cannot be bypassed via the core. In particular, an underside of the winding carrier is designed to be closed.

A core cooling structure includes a core and a housing. The core includes an upper core and a lower core. The core is attached to the housing. The upper core includes a heat dissipation fin that extends along a magnetic path and is disposed at an interval in a direction intersecting the magnetic path. The lower core is attached so as to be fitted into the housing.