Abstract: A dual conductor Thomson coil actuator for use in opening the separable contacts of a circuit interrupter comprises two nested conductors wound to form a single coil, rather than the traditional design comprising one single conductor wound to form a coil of the same size. Each of the two conductors can be excited by half the capacitance that would be used to excite the traditional single conductor coil, using the same voltage as the single conductor coil. When the same total capacitor-stored energy that would be used to excite the single conductor coil is instead used to excite the dual conductor coil, the initial pulse of aggregate current through the dual conductor coil is greater than the initial pulse of current through the single conductor coil, resulting in a faster initial opening distance of the separable contacts during an opening stroke.

Abstract: A contact apparatus includes a fixed contact and a moving contact component. The moving contact component includes a push rod, a contact bracket, an insulated sleeve, a moving contact, and a contact spring. The insulated sleeve is fixedly sleeved on a first end of the push rod, a second end of the push rod is configured to connect a drive apparatus, the contact bracket is fixedly sleeved on the insulated sleeve, the moving contact and the contact spring are both flexibly sleeved on the insulated sleeve, the contact spring elastically abuts between the moving contact and the contact bracket, the moving contact and the fixed contact are disposed relative to each other in an extension direction of the push rod, and the moving contact can be driven by the push rod to be connected to the fixed contact.

Abstract: A non-cryogenic electro-permanent magnet for use in a gyrotron comprises a plurality of toroidal-shaped sets of electromagnet coils and a plurality of toroidal-shaped permanent magnets, each permanent magnet comprising a plurality of arc segment blocks. Each set of the coils is separated from an adjacent set of the coils by one or more of the permanent magnets disposed between the adjacent sets of coils, such that the coils and the permanent magnets are arranged concentrically to form an open central bore. A combination of magnetic fields in the permanent magnets and magnetic fields in the coils generates a substantially uniform axial magnetic field in the bore.

Abstract: A modular contactor. The modular contactor includes a driving module (1), an intermediate connection module (2), a breaking module (3), an upper application interface module (4), and a lower application interface module (5); the driving module (1) is detachably connected to a first side of the intermediate connection module (2); the breaking module (3) is detachably connected to a second side of the intermediate connection module (2); the upper application interface module (4) is detachably connected to the top of the breaking module (3) so as to be electrically connected to upper static contacts of the multiple breaking units; the lower application interface module (5) is detachably connected to the bottom of the breaking module (3) so as to be electrically connected to lower static contacts of the multiple breaking units.

Abstract: An electrical contactless switch that includes a housing, a moveable element and a magnetic field sensor. The moveable element is made of a ferromagnetic material and is slidably mounted in the housing. The moveable element is adapted to move relative to the housing between a resting position and an engaged position, the moveable element is elastically biased towards the resting position. The moveable element includes a plurality of magnetized legs spaced from each other and at least part of the magnetized legs is slidably guided in the housing. The magnetic field sensor is secured to the housing and positioned to face the plurality of magnetized legs. The magnetic sensor is configured to detect a magnetic field generated by the magnetized legs as the moveable element is in the engaged position. The moveable element is closer to the magnetic field sensor in the engaged position than in the resting position.

Abstract: A bi-stable soft electromagnetic actuator includes a housing including a frame portion formed of a stretchable elastic body, a stretchable coil portion generating an electromagnetic field by applied power, located in the housing, and having a first surface and a second surface facing in mutually opposite directions, and at least a pair of permanent magnet portions respectively facing the first surface and the second surface of the stretchable coil portion and arranged to maintain a distance by the frame portion.

Abstract: A switch includes a first fixed contactor, a second fixed contactor, a movable contactor, permanent magnets, and a yoke. The movable contactor extends in a first direction, includes a first movable contact at a first end portion, and is provided to be contactable with and separatable from the first fixed contactor in a second direction. The permanent magnets are arranged to sandwich the movable contactor, and to cause their surfaces facing the movable contactor in the third direction of the movable contactor to have the same polarity. The yoke surrounds a periphery of the movable contactor in the first direction and the third direction and is connected to surfaces of the permanent magnets on opposite sides of their surfaces facing the movable contactor. The yoke includes a protrusion protruding toward the movable contactor at a position facing the first end portion of the movable contactor in the first direction.

Abstract: A plug-in circuit breaker with an operating button that includes a button inner end inserted inside the circuit breaker and a button outer end. An indicator slot is arranged inside the operating button, an indicating hole is arranged on the button outer end. The plug-in circuit breaker further includes an indicating member slidably inserted inside the indicator slot and one end of which is provided with a make-contact indicating surface and a break-contact indicating surface. When the plug-in circuit breaker is in a break-contact state, the break-contact indicating surface is arranged opposite to the indicating hole, thus during pressing the operating button, the indicating member moves inside the indicator slot. After the make-contact state, the make-contact indicating surface is arranged opposite to the indicating hole. The indicating member is arranged inside the operating button to save space and to indicate the break-contact and make-contact state through the indicating hole.

Abstract: A relay, includes: a housing having a cavity in the housing; stationary contacts arranged on the housing, each of the stationary contacts being at least partially in the cavity; a drive shaft movable in an axial direction of the drive shaft, an axial end of the drive shaft having a support piece at least partially inserted into the cavity; a moving contact assembly coupled with the support piece through a sliding structure and movable in the axial direction of the drive shaft, and the sliding structure being arranged on a side of the moving contact assembly along a moving direction of the moving contact assembly; and an elastic member being between the moving contact assembly and the support piece and applying an elastic force to the moving contact assembly.

Abstract: A high-temperature superconducting flux pump system comprises a flux pump body, a superconducting load, and a stator group. A double-pancake coil group comprises at least one double-pancake coil. The stator group comprises at least one stator. The flux pump body has an air gap for receiving the stator group. The superconducting load and the stator group are connected to form a closed circuit. The high-temperature superconducting flux pump system has a simpler structure, solves the problem of low charging rate of magnets, and greatly reduces the power cost without changing the magnet structure and winding cost.

Abstract: A fluid transport system that includes a magnetic shape memory pipe having an input end opposite an output end and an outer surface opposite an inner surface. The inner surface defines an inner diameter of the magnetic shape memory pipe and the magnetic shape memory pipe includes a magnetic shape memory alloy. The fluid transport system further includes one or more magnetic field generating devices surrounding the outer surface of the magnetic shape memory pipe and configured to generate a control magnetic field that, when applied to a region of the magnetic shape memory pipe, alters the inner diameter of the region of the magnetic shape memory pipe.

Abstract: An electromagnetic actuator including a soft-ferromagnetic yoke is described. The electromagnetic actuator includes an at least substantially cylindrical circumferential wall covered at a first end with a base and at a second end with a top, the circumferential wall defining an axis in a direction from the base end to the top. An intermediate yoke section holds a permanent magnet fixed that leaves an inner space housing an axially movable core element being flexibly restrained with at least one resilient element. One of a base yoke section and/or a top yoke section houses an electromagnetic coil.

Abstract: An electromagnetic relay includes a housing, a first fixed terminal, a movable contact piece, a drive device, and a first heat dissipation member. The first fixed terminal protrudes from inside the housing to outside the housing. The movable contact piece is disposed in the housing. The movable contact piece faces the first fixed terminal. The drive device moves the movable contact piece in a contact direction and an opening direction. The first heat dissipation member is disposed outside the housing. The first heat dissipation member is provided separately from the first fixed terminal. The first heat dissipation member is connected to the first fixed terminal.

Abstract: A socket includes a housing including a connection surface to which an electronic device is connected, and a lever attached to the housing to be rotatable. The lever includes an operation portion that is rotatable between a first position and a second position and a contact portion that extends from the operation portion in a direction approaching the connection surface and rotates about the rotation axis together with the operation portion. The housing includes a restriction protrusion that comes into contact with a protruding portion protruding from the side portion of the electronic device toward the operation portion at the second position to restrict a movement of the electronic device in the first direction and in a direction away from the connection surface when the operation portion is rotated from the first position to the second position in a state where the electronic device is connected to the connection surface.

Abstract: An electromagnetic relay includes a housing, a movable contact piece, a first fixed terminal, and a drive device. The movable contact piece is disposed in the housing. The first fixed terminal includes a first contact portion and a first terminal portion. The first contact portion faces the movable contact piece in the housing. The first terminal portion protrudes out of the housing. The first terminal portion has a bent shape. The drive device moves the movable contact piece in a contact direction and an opening direction.

Abstract: An electromagnetic relay includes a housing, a first fixed terminal, a movable contact piece, and a drive device. The first fixed terminal includes a first main member and a first layer member. The first main member protrudes from inside the housing to outside the housing. The first layer member is provided separately from the first main member. The first layer member is laminated on the first main member. The first layer member protrudes from inside the housing to outside the housing. The first layer member has a shape branched from the first main member. The movable contact piece is disposed in the housing and faces the first fixed terminal. The drive device moves the movable contact piece in a contact direction and an opening direction.

Abstract: A linear actuator includes a magnet housing having first and second planar sides, a front plate and a rear plate, and a base plate covering a channel defined by the magnet housing. A first plurality of magnets is secured to the first planar side and a second plurality of magnets is secured to the second planar side. A linear guide slidably secured to an inner surface of the base plate. A piston assembly has a piston element attached to the linear guide. The piston assembly includes a shaft and a printed circuit board attached to the piston element. The printed circuit board defines a controller and a printed coil assembly. A flex cable is electrically connected to the printed circuit board. The piston assembly is disposed to move linearly during operation of the linear actuator.

Abstract: A superconducting coil device includes a vacuum vessel, a superconducting coil located inside the vacuum vessel, a heat shield surrounding the superconducting coil within the vacuum vessel, and an electric current introduction line for introducing an electric current into the superconducting coil. The electric current introduction line includes an outer current lead part located outside of the heat shield, within the vacuum vessel, and thermally coupled to the heat shield, and an inner current lead part located inside of the heat shield and connecting the outer current lead part to the superconducting coil. The outer current lead part includes a main body serving as an electric current path to the superconducting coil, an insulation layer that covers the main body, and a heat shield layer that covers the insulation layer and has a lower emissivity than the insulation layer.

Abstract: A current lead arrangement for supplying current to a superconducting magnet coil, comprising a current lead and a cryogenic refrigerator. The current lead comprises a first section of low temperature superconductor (LTS) wire, joined to a second section of a high temperature superconductor (HTS) material, in turn joined to a third section of a resistive material. The cryogenic refrigerator comprises a first cooling stage and a second cooling stage. A lower end of the third section and an upper end of the second section are thermally linked to the first cooling stage, a lower end of the first section is thermally and electrically connected to the superconducting magnet coil.

Abstract: A solenoid contains a yoke, a bobbin having an electromagnetic coil disposed inside the yoke, and an iron core disposed inside the bobbin. In the solenoid, a connector part incorporating a prescribed number of terminal metal fittings is provided on one end portion of the bobbin.