The present invention is aimed to provide a quadrupole mass spectrometer that is less thermally affected by a transformer, the quadrupole mass spectrometer including: an ionizer unit that ionizes a sample; a quadrupole unit that has two pairs of opposing electrodes that selectively pass ions generated in the ionizer unit; a voltage applying unit that applies a voltage obtained by superimposing a high-frequency voltage V cos t over a DC voltage U and to each pair of the two pairs of opposing electrodes; and an ion detecting unit that detects ions having passed through the quadrupole unit, wherein the voltage applying unit includes the transformer that transforms the high-frequency voltage V cos t, and the transformer includes a toroidal core, and a primary winding and a secondary winding that are wound around the toroidal core, and the primary winding is formed of a metal conductor having a plate-like shaped.

The invention relates to a magnetic assembly comprising a magnetic core made of a soft magnetic material and a housing which surrounds the magnetic core on all sides and has two housing parts connected to one another. The connected housing parts have an overlapping region all around the magnetic core, within which one of the housing parts has a ridge all around the edge and the other housing part has a corresponding groove all around the edge, in which the rib interlockingly engages.

Example implementations herein relate to electromagnetic coils. One example device includes a plurality of coil windings. Each coil winding may extend around a shared core region inside the plurality of coil windings between a respective first end and a respective second end. The respective first end is electrically connected to a respective first-end electrical contact. The respective second end is electrically connected to a respective second-end electrical contact. The device also includes a plurality of mountable components. Each mountable component electrically couples a respective first coil winding to a respective second coil winding via the respective first-end electrical contact of the respective first coil winding and the respective second-end electrical contact of the second coil winding.

A magnetic core for inductor includes a first core segment, a second core segment spaced apart from the first core segment by a gap, and a spacer. The spacer is arranged within the gap and between the first core segment and the second core segment. The spacer includes a semi-conductive material to limit arc radius of magnetic flux lines communicated between the first core segment and the second core segment outside the gap. Inductors, flyback transformers and transformer rectifier units, and power conversion methods are also described.

A microelectronic module that includes a semiconductor carrier including a FET that comprises a serpentine gate electrode having an elongated gate width and gate width-to-gate length ratio in access of 100 wherein resistive, capacitive, and inductive elements are embedded within the structure of the serpentine gate electrode.

An inductor includes a printed wiring board (PWB) and a plurality of electrically-conductive heat pipes operatively connected to the PWB. The PWB includes electrically conductive traces electrically connected to the plurality of electrically-conductive heat pipes. The traces and plurality of electrically conductive heat pipes form an inductor winding. A method of manufacturing an inductor includes mounting a plurality of electrically conductive heat pipes to a printed wiring board (PWB), wherein the PWB includes electrically conductive traces to connect the plurality of electrically-conductive heat pipes to form an inductor winding.

An inductor includes a printed wiring board (PWB) and a plurality of electrically-conductive heat pipes operatively connected to the PWB. The PWB includes electrically conductive traces electrically connected to the plurality of electrically-conductive heat pipes. The traces and plurality of electrically conductive heat pipes form an inductor winding. A method of manufacturing an inductor includes mounting a plurality of electrically conductive heat pipes to a printed wiring board (PWB), wherein the PWB includes electrically conductive traces to connect the plurality of electrically-conductive heat pipes to form an inductor winding.

A reactor includes an outer peripheral iron core and at least three iron-core coils that contact or are connected to an inner surface of the outer peripheral iron core. Each of the iron-core coils includes iron cores and coils wound onto the iron cores. The reactor further includes an external cooling unit disposed outside the outer peripheral iron core, to cool the outer peripheral iron core.

A reactor includes an outer peripheral iron core and at least three iron-core coils that contact or are connected to an inner surface of the outer peripheral iron core. Each of the iron-core coils includes iron cores and coils wound onto the iron cores. The reactor further includes an external cooling unit disposed outside the outer peripheral iron core, to cool the outer peripheral iron core.

Example implementations herein relate to electromagnetic coils. One example device includes a plurality of coil windings. Each coil winding may extend around a shared core region inside the plurality of coil windings between a respective first end and a respective second end. The respective first end is electrically connected to a respective first-end electrical contact. The respective second end is electrically connected to a respective second-end electrical contact. The device also includes a plurality of mountable components. Each mountable component electrically couples a respective first coil winding to a respective second coil winding via the respective first-end electrical contact of the respective first coil winding and the respective second-end electrical contact of the second coil winding.