A composite electronic component may include: a composite body including a capacitor and an inductor coupled to each other, the capacitor having a ceramic body in which dielectric layers and internal electrodes facing each other with the dielectric layers interposed therebetween are stacked, and the inductor having a magnetic body in which magnetic layers having conductive patterns are stacked; an input terminal disposed on a first end surface of the composite body; an output terminal including a first output terminal disposed on a second end surface of the composite body and a second output terminal disposed on any one or more of upper and lower surfaces and a second side surface of the capacitor; and a ground terminal disposed on any one or more of the upper and lower surfaces and a first side surface of the capacitor and connected to the internal electrodes.

Techniques for improving performance of a transformer shared amongst a plurality of operating modes. In an aspect, first and second primary windings of a transformer are coupled to an AC ground voltage. Primary windings are mutually coupled to a secondary winding of the transformer. To render the second primary winding inactive, e.g., when operating in a first mode, a switch coupling the second primary winding to the common reference voltage is opened. Similarly, when it is desired to render the first primary winding inactive, e.g., when operating in a second mode, a switch coupling the first primary winding to the common reference voltage is opened. In this manner, the inactive primary winding advantageously does not load the secondary winding. Further aspects provide for, e.g., extending the techniques to more than two modes, and alternative techniques to mutually couple the signal from the primary to the secondary winding.

Techniques for improving performance of a transformer shared amongst a plurality of operating modes. In an aspect, first and second primary windings of a transformer are coupled to an AC ground voltage. Primary windings are mutually coupled to a secondary winding of the transformer. To render the second primary winding inactive, e.g., when operating in a first mode, a switch coupling the second primary winding to the common reference voltage is opened. Similarly, when it is desired to render the first primary winding inactive, e.g., when operating in a second mode, a switch coupling the first primary winding to the common reference voltage is opened. In this manner, the inactive primary winding advantageously does not load the secondary winding. Further aspects provide for, e.g., extending the techniques to more than two modes, and alternative techniques to mutually couple the signal from the primary to the secondary winding.

A chip resistor includes a substrate, and a plurality of resistor elements each having a resistive film provided on the substrate and an interconnection film provided on the resistive film in contact with the resistive film. An electrode is provided on the substrate. Fuses disconnectably connect the resistor elements to the electrode. The resistive film is made of at least one material selected from the group of NiCr, NiCrAl, NiCrSi, NiCrSiAl, TaN, TaSiO.sub.2, TiN, TiNO and TiSiON.

A chip resistor includes a substrate, and a plurality of resistor elements each having a resistive film provided on the substrate and an interconnection film provided on the resistive film in contact with the resistive film. An electrode is provided on the substrate. Fuses disconnectably connect the resistor elements to the electrode. The resistive film is made of at least one material selected from the group of NiCr, NiCrAl, NiCrSi, NiCrSiAl, TaN, TaSiO.sub.2, TiN, TiNO and TiSiON.

A rolled iron core traction transformer, comprising an iron core (1); the iron core (1) is formed by splicing two symmetrical annealed iron-core closed single frames (1-1); each iron-core closed single frame (1-1) is formed by sequentially coiling continuous silicon steel sheets; the iron-core closed single frame (1-1) has two iron core column single bodies (1-1-1) having approximately semicircular cross sections; the iron core (1) has two iron core columns (1-2) thereon spliced by the iron core column single bodies (1-1-1) and having approximately circular cross sections; each iron core column (1-2) is sequentially provided with a low-voltage T winding (6), a low-voltage F winding (5) and a high-voltage winding (4) thereon from inside to outside; two sides of each high-voltage winding (4) are respectively provided with a first tapping area and a second tapping area; the first tapping area is provided with low-voltage side high-voltage tapping outgoing lines (16); the second lapping area is provided with high-voltage side high-voltage tapping outgoing lines (18); two low-voltage side high-voltage tapping outgoing lines (16) are connected together via a no-load voltage regulation switch (9); and two high-voltage side high-voltage tapping outgoing lines (18) are connected together via another no-load voltage regulation switch (9). The transformer reduces no-load loss, has a small no-load current, low noise and strong anti-short circuit capability, reduces the electrodynamic force generated by a sudden short circuit, and improves the short circuit tolerance capability of the transformer.

In some example embodiments, there may be provided an apparatus. The apparatus may include a chamber including a first cavity and a second cavity, wherein the chamber further includes a first fluid suspended in a second fluid; a first electrode adjacent to the first cavity; a second electrode adjacent to the second cavity; a third electrode configured to provide a common electrode to the first electrode and the second electrode; and at least one coil adjacent to at least one of the first cavity or the second cavity, wherein an inductance value of the coil is varied by at least applying a driving signal between the common electrode and the first electrode and/or the second electrode. Related methods, systems, and articles of manufacture are also disclosed.

In some example embodiments, there may be provided an apparatus. The apparatus may include a chamber including a first cavity and a second cavity, wherein the chamber further includes a first fluid suspended in a second fluid; a first electrode adjacent to the first cavity; a second electrode adjacent to the second cavity; a third electrode configured to provide a common electrode to the first electrode and the second electrode; and at least one coil adjacent to at least one of the first cavity or the second cavity, wherein an inductance value of the coil is varied by at least applying a driving signal between the common electrode and the first electrode and/or the second electrode. Related methods, systems, and articles of manufacture are also disclosed.

A multi-core segment variable inductor with different core materials, and a control circuit and a control method thereof. The variable inductor includes a center magnetic segment c, wherein a winding on the center magnetic segment c serves as an inductive winding, and a number of turns of the center magnetic segment is N.sub.ac; and peripheral magnetic segments, wherein a number of the peripheral magnetic segments is n; the peripheral magnetic segments are labeled as p.sub.1, p.sub.2, p.sub.3, . . . , to p.sub.n; a winding on each peripheral magnetic segment serves as a control winding, and the control windings on the peripheral magnetic segments are configured to independently operate; a number of turns of the control winding of each peripheral magnetic segment is correspondingly N.sub.dc_p1, N.sub.dc_p2, N.sub.dc_p3, . . . , N.sub.dc_pn; wherein an air gap exists between each peripheral magnetic segment and the center magnetic segment, and a length of the air gap is l.sub.g.

A multi-core segment variable inductor with different core materials, and a control circuit and a control method thereof. The variable inductor includes a center magnetic segment c, wherein a winding on the center magnetic segment c serves as an inductive winding, and a number of turns of the center magnetic segment is N.sub.ac; and peripheral magnetic segments, wherein a number of the peripheral magnetic segments is n; the peripheral magnetic segments are labeled as p.sub.1, p.sub.2, p.sub.3, . . . , to p.sub.n; a winding on each peripheral magnetic segment serves as a control winding, and the control windings on the peripheral magnetic segments are configured to independently operate; a number of turns of the control winding of each peripheral magnetic segment is correspondingly N.sub.dc_p1, N.sub.dc_p2, N.sub.dc_p3, . . . , N.sub.dc_pn; wherein an air gap exists between each peripheral magnetic segment and the center magnetic segment, and a length of the air gap is l.sub.g.