An inductive device comprises a toroidal core and at least one electric conductor wound around the toroidal core and constituting at least one winding. The inductive device comprises a cooling element constituting a cylindrical cavity that contains the toroidal core and the electric conductor so that the axial direction of the toroidal core is parallel with the axial direction of the cylindrical cavity. The shape of the cylindrical cavity and the cross-section of the electric conductor are adapted to match each other to improve heat transfer from the electric conductor to the wall of the cylindrical cavity so that a wall of the cylindrical cavity is provided with axially directed grooves occupied by portions of the electric conductor on an outer perimeter of the winding.

In a method for cooling an MRI apparatus, and an MRI apparatus, the MRI apparatus has a magnet, a primary cooling device and a secondary cooling device, and a magnet controller, the primary cooling device being in contact with the magnet and the secondary cooling device separately. The magnet controller continuously monitors a pressure of the magnet, and turns off the secondary cooling device if the pressure is greater than or equal to a first preset pressure, of less than a second preset pressure and in a rising state. The present invention can save electricity, and since the duration of use of the secondary cooling device is also reduced, the lifespan of the secondary cooling device is prolonged, saving costs.

In a method for cooling an MRI apparatus, and an MRI apparatus, the MRI apparatus has a magnet, a primary cooling device and a secondary cooling device, and a magnet controller, the primary cooling device being in contact with the magnet and the secondary cooling device separately. The magnet controller continuously monitors a pressure of the magnet, and turns off the secondary cooling device if the pressure is greater than or equal to a first preset pressure, of less than a second preset pressure and in a rising state. The present invention can save electricity, and since the duration of use of the secondary cooling device is also reduced, the lifespan of the secondary cooling device is prolonged, saving costs.

A method of manufacturing Radio Frequency (RF) coil for multi-driven RF based-ve Ion source includes the steps of: (a) manufacturing a tube using stainless steel grade as a substrate material; (b) coating the tube; and (c) joining a plurality of coils produced by step (a) and step (b) by orbital TIG welding process.

A low pass filter including: a coil that includes a band-shaped conductor and is wound a plurality of times around an axis; a capacitor that has one terminal connected to the conductor and the other terminal connected to ground; a cooling plate in contact with an end surface of the wound coil with respect to a direction of the axis; and a ceramic layer that has a flat surface and is disposed on the end surface of the would coil facing the direction of the axis, wherein the ceramic layer contacts the cooling plate, and the cooling plate includes a flow path through which water flows.

The present disclosure provides a heat dissipation structure for a magnetic component and a magnetic component having the same. The magnetic component includes a plurality of heat dissipation pins, which are disposed on the winding of the magnetic component, wherein the magnetic component has one or more windings. The heat dissipation structure includes a circuit board on which a plurality of heat dissipation channels are disposed, and the heat dissipation pins of the windings are in contact with the heat dissipation channels; a plurality of heat conduction portions are disposed correspondingly under the heat dissipation channels of the circuit board; a heat conduction layer is arranged under the heat conduction portions and contacts with the heat conduction portions; and a heat dissipation layer is arranged under the heat conduction layer and contacts with the heat conduction layer.

The present disclosure provides a heat dissipation structure for a magnetic component and a magnetic component having the same. The magnetic component includes a plurality of heat dissipation pins, which are disposed on the winding of the magnetic component, wherein the magnetic component has one or more windings. The heat dissipation structure includes a circuit board on which a plurality of heat dissipation channels are disposed, and the heat dissipation pins of the windings are in contact with the heat dissipation channels; a plurality of heat conduction portions are disposed correspondingly under the heat dissipation channels of the circuit board; a heat conduction layer is arranged under the heat conduction portions and contacts with the heat conduction portions; and a heat dissipation layer is arranged under the heat conduction layer and contacts with the heat conduction layer.

A wireless charging coil structure with a function of heat dissipation comprises a first connecting terminal, a second connecting terminal and a coil. The coil is disposed between the first connecting terminal and the second connecting terminal, and configured to transmit a signal between the first connecting terminal and the second connecting terminal. The coil comprises a heat-pipe segment and a transmission segment electrically and heat-conductively connected with each other. The transmission segment has a predetermined thickness, the heat-pipe segment encircles an accommodating space, and a heat-dissipating medium is disposed in the accommodating space.

A wireless charging coil structure with a function of heat dissipation comprises a first connecting terminal, a second connecting terminal and a coil. The coil is disposed between the first connecting terminal and the second connecting terminal, and configured to transmit a signal between the first connecting terminal and the second connecting terminal. The coil comprises a heat-pipe segment and a transmission segment electrically and heat-conductively connected with each other. The transmission segment has a predetermined thickness, the heat-pipe segment encircles an accommodating space, and a heat-dissipating medium is disposed in the accommodating space.

A method for manufacturing a heavy-current transformer with at least one primary winding and at least one secondary winding with surfaces for contacting connects first inner surfaces of the at least one secondary winding with an I-beam of electrically conductive material of the heavy-current transformer with a first soldering material at a first, higher melting temperature, and subsequently at least one contact plate of electrically conductive material is soldered with exterior surfaces of the at least one secondary winding with a second soldering material at a second melting temperature that is lower as compared to the first melting temperature.