A system includes conductive windings extending around a magnetic core and impedance-varying windings extending around the magnetic core. The impedance-varying windings include positive windings and negative windings. The conductive windings and the impedance-varying windings conduct electric current around the magnetic core. The system includes a first impedance tap changer that is electrically coupled with the positive windings of the impedance-varying windings and a second impedance tap changer electrically coupled with the negative windings of the impedance-varying windings. A controller controls the first impedance tap changer and the second impedance tap changer to change an impedance of the system by changing which portion of the positive windings and which portion of the negative windings are conductively coupled with the conductive windings, and which portion of the positive windings and which portion of the negative windings are disconnected from the conductive windings.

A magnetic assembly includes plural first magnetic cores, plural coil windings and a second magnetic core. Each of the plural first magnetic cores includes plural legs and a first connection part. The first connection part is connected with first terminals of the plural legs. The first connection part of the first magnetic core at an upper position is located adjacent to second terminals of the plural legs of the adjacent first magnetic core at a lower position. Each coil winding is wound around at least one leg of the plural legs of the corresponding first magnetic core so as to form a magnetic element of the corresponding converter. The second magnetic core is stacked over the plural first magnetic cores. The second magnetic core is located adjacent to the second terminals of the legs of the topmost first magnetic core.

A magnetic assembly includes plural first magnetic cores, plural coil windings and a second magnetic core. Each of the plural first magnetic cores includes plural legs and a first connection part. The first connection part is connected with first terminals of the plural legs. The first connection part of the first magnetic core at an upper position is located adjacent to second terminals of the plural legs of the adjacent first magnetic core at a lower position. Each coil winding is wound around at least one leg of the plural legs of the corresponding first magnetic core so as to form a magnetic element of the corresponding converter. The second magnetic core is stacked over the plural first magnetic cores. The second magnetic core is located adjacent to the second terminals of the legs of the topmost first magnetic core.

An on-chip magnetic structure includes a magnetic material comprising cobalt in a range from about 80 to about 90 atomic % (at. %) based on the total number of atoms of the magnetic material, tungsten in a range from about 4 to about 9 at. % based on the total number of atoms of the magnetic material, phosphorous in a range from about 7 to about 15 at. % based on the total number of atoms of the magnetic material, and palladium substantially dispersed throughout the magnetic material.

An on-chip magnetic structure includes a magnetic material comprising cobalt in a range from about 80 to about 90 atomic % (at. %) based on the total number of atoms of the magnetic material, tungsten in a range from about 4 to about 9 at. % based on the total number of atoms of the magnetic material, phosphorous in a range from about 7 to about 15 at. % based on the total number of atoms of the magnetic material, and palladium substantially dispersed throughout the magnetic material.

A method for wireless charging an energy storage device; it includes transmitting electrical energy from a power source to a frequency adjustable current converter, generating a high frequency AC current by the frequency adjustable current converter, setting by the frequency adjustable current converter, receiving by the power transmission apparatus the high frequency AC current having the frequency, generating the high frequency AC current the resonant coil of the power transmission apparatus, coupling a power transmission apparatus magnetic-resonance to a power reception apparatus magnetic-resonance, generating a generated high frequency electrical current in a resonant coil of a power reception apparatus using the coupling; and converting the generated high frequency AC current to an electrical current required to provide operation of the energy storage device by a current converter connected to the energy storage device.

Provided is a laminated electronic component in which defective formation is unlikely to cause in a shield conductor layer on a side surface of a laminate. The laminated electronic component includes a laminate 1, in which substrate layers 1a to 1i are laminated, having an outer surface including a first main surface 1B, a second main surface 1T, and a side surface 1S, internal electrodes (a ground electrode 2, coil electrodes 3, capacitor electrodes 4, and wiring electrodes 5), an external electrode 7, and a first plating layer 9 formed on a surface of the external electrode 7.

A balun includes first, second, and third terminals, first, second, and third inductors, and a capacitor. The first and second inductors are electrically connected in series with each other between the first terminal and a ground point. The capacitor is electrically connected in series with the first inductor between the first terminal and the ground point. The capacitor is electrically connected in parallel with the second inductor between the first inductor and the ground point. The third inductor is electrically connected between the second terminal and the third terminal. The third inductor is magnetically coupled with at least the first inductor.

A multilayer balun includes first, second, and third terminals, first and second inductors, and an open line conductor. The first inductor is electrically connected between the first terminal and ground points. The second inductor is electrically connected between the second terminal and the third terminal and is magnetically coupled with the first inductor. The open line conductor has one end that is an open end and another end that is electrically connected to a via conductor pattern, which is a signal path between the first terminal and ground points.

A coil component includes a body having one end and the other end opposing each other, a support substrate disposed inside the body, a coil portion, disposed on at least one surface of the support substrate, in which an end portion of an outermost turn is disposed closer to the one surface of the body than to the other surface of the body, a lead-out portion connected to the outermost turn of the coil portion and exposed to the one surface of the body, and an anchor portion connected to the lead-out portions and including a via pad disposed between the lead-out portion and the coil portion inside the body.