A transformer and a power supply device. In the transformer, the first secondary coil including: first and second plate coils; and a first holding portion formed therebetween, the second secondary coil including: third and fourth plate coils; and a second holding portion formed therebetween, the first secondary coil is arranged between the third and fourth coils, the ends of the first plate coil and third plate coil are connected by solder, and the ends of the second plate coil and fourth plate coil are connected by solder, when the secondary-side rectifier circuit is a center-tapped rectifier circuit, the first holding portion, the second holding portion, and the bus bar are connected by solder through the connection hole, when the secondary-side rectifier circuit is a rectifier circuit other than the center-tapped rectifier circuit, the first holding portion and the second holding portion are connected by solder through the connection hole.

There is provided a device that includes a core, a first winding portion that turns around an outer circumference of the core, a plurality of sub-substrates each having a pattern of a second winding turning around the outer circumference of the core, and a main substrate on which a plurality of sub-substrates are mounted.

A circuit arrangement includes an X-ray tube, including a cathode and an anode, and a high-voltage transformer. In an embodiment, the high-voltage transformer includes at least one primary winding, at least one first secondary winding, including a first oscillating circuit, wherein the first oscillating circuit includes a first leakage inductance and a first winding capacitance, to adjust a first resonance frequency, and at least one second secondary winding, including a second oscillating circuit, wherein the second oscillating circuit includes a second leakage inductance and a second winding capacitance, to adjust a second resonance frequency, the first resonance frequency matching the second resonance frequency, the first winding capacitance and the second winding capacitance differing in value and the first leakage inductance and the second leakage inductance differing in value. The first secondary winding is electrically connected to the cathode and the second secondary winding is electrically connected to the anode.

A circuit arrangement includes an X-ray tube, including a cathode and an anode, and a high-voltage transformer. In an embodiment, the high-voltage transformer includes at least one primary winding, at least one first secondary winding, including a first oscillating circuit, wherein the first oscillating circuit includes a first leakage inductance and a first winding capacitance, to adjust a first resonance frequency, and at least one second secondary winding, including a second oscillating circuit, wherein the second oscillating circuit includes a second leakage inductance and a second winding capacitance, to adjust a second resonance frequency, the first resonance frequency matching the second resonance frequency, the first winding capacitance and the second winding capacitance differing in value and the first leakage inductance and the second leakage inductance differing in value. The first secondary winding is electrically connected to the cathode and the second secondary winding is electrically connected to the anode.

Disclosed herein is a wire that includes: a core wire made of a conductor; an insulating film covering an outer periphery of the core wire; a catalyst adsorption film covering an outer periphery of the insulating film, the catalyst adsorption film including a catalyst serving as a reaction start point of electroless plating; and an outer periphery conductor covering an outer periphery of the catalyst adsorption film.

A stationary induction apparatus includes: an iron core with a shaft portion including a plurality of first electromagnetic steel plates stacked in a stacking direction, the shaft portion having a main surface located at each of both ends of the plurality of first electromagnetic steel plates in the stacking direction; a winding wound around the shaft portion; a first magnetic shield arranged along the main surface, the first magnetic shield being configured by stacking a plurality of second electromagnetic steel plates in a direction orthogonal to the stacking direction of the first electromagnetic steel plates; and a second magnetic shield arranged along the main surface, the second magnetic shield being arranged on each of both sides of the first magnetic shield, the second magnetic shield being configured by stacking a plurality of third electromagnetic steel plates in a direction orthogonal to the stacking direction of the second electromagnetic steel plates.

There is provided a stationary induction apparatus having a tank accommodating a transformer main body therein, in which a vibration suppression steel material is provided in at least a portion in the vicinity of an edge portion on a tank bottom surface. In addition, a portion of the vibration suppression steel material is made attachable and detachable.

There is provided a device that includes a core, a first winding portion that turns around an outer circumference of the core, a plurality of sub-substrates each having a pattern of a second winding turning around the outer circumference of the core, and a main substrate on which a plurality of sub-substrates are mounted.

A circuit module equipped with a primary coil of a step-down transformer formed by primary coils of a plurality of transformer elements connected in series with each other and a secondary coil formed by secondary coils of the transformer elements connected in series with each other, includes a printed substrate on which the transformer elements are mounted in a lengthwise direction, a connection terminal coupled to a first end of the primary coil of the step-down transformer and connection terminals coupled to the secondary coil of the step-down transformer, the connection terminals are positioned such that the transformer elements are interposed therebetween. As a result, provided are a transformer module that reduces the effect of a high-voltage portion on a low-voltage portion by securing a distance between the high-voltage portion and the low-voltage portion, and a power reception device and a power transmission device equipped with the transformer module.

A circuit module equipped with a primary coil of a step-down transformer formed by primary coils of a plurality of transformer elements connected in series with each other and a secondary coil formed by secondary coils of the transformer elements connected in series with each other, includes a printed substrate on which the transformer elements are mounted in a lengthwise direction, a connection terminal coupled to a first end of the primary coil of the step-down transformer and connection terminals coupled to the secondary coil of the step-down transformer, the connection terminals are positioned such that the transformer elements are interposed therebetween. As a result, provided are a transformer module that reduces the effect of a high-voltage portion on a low-voltage portion by securing a distance between the high-voltage portion and the low-voltage portion, and a power reception device and a power transmission device equipped with the transformer module.