Abstract: The present disclosure relates to a direct current (DC) relay having an auxiliary contact, and more particularly, to a DC relay having an auxiliary contact to have a monitoring function regarding a state of the DC relay. The DC relay having an auxiliary contact includes a housing, main contacts installed at a portion of the housing, and an auxiliary contact installed at another portion of the housing, wherein a partition is installed in a longitudinal direction inside the housing to provide a first accommodating part and a second accommodating part, the main contacts are installed in the first accommodating part, and the auxiliary contact is installed in the second accommodating part.

Abstract: A disconnecting device interrupts a direct current of a current path containing a hybrid switch which has a current-carrying mechanical contact system and a semiconductor switching system connected in parallel thereto. The contact system has a fixed contact and a moving contact. The moving contact is mounted on a contact bridge being coupled to a drive system moving the moving contact in a switching movement from an open position into a closed position resting against the fixed contact with a contact force. A first magnet element is mounted on the contact bridge and spaced apart from a stationary second magnet element by an air gap such that, when a current flows through the contact bridge, a magnetic field is produced in the first magnet element and the first and second magnet elements are magnetically attracted. The attraction produces a magnetic force directed in the same direction as the contact force.

Abstract: A high-speed solenoid includes a casing, a least two pairs of first permanent magnet and second permanent magnet installed in the casing, and coils corresponding to the pairs of first permanent magnet and second permanent magnet provided in the same number as the number thereof in a bobbin of a mover. In magnetic paths formed by the pairs of first permanent magnet and second permanent magnet and the coils, each magnetic path corresponding to each pair of first permanent magnet and second permanent magnet is separated from each other. Therefore, the multiple magnetic paths are formed to operate the mover. The high-speed solenoid has an advantage in that the mover is operated at a relatively high speed.

Abstract: The present disclosure relates to a conversion circuit, an inverter, and a method of driving the inverter, wherein a switch is provided at an input terminal of a direct current (DC) link capacitor, so that power is charged in the DC link capacitor through a switching element at initial driving and charged in the DC link capacitor through a rectifier when a voltage level of the DC link capacitor is equal to or higher than a preset reference level, thereby limiting inrush current caused in the DC link capacitor through the switching element when the inrush current is caused.

Abstract: A magnetic coupling coil element in one embodiment includes a magnetic base body that includes an intermediate magnetic layer, a first magnetic layer disposed over the intermediate magnetic layer, and a second magnetic layer disposed under the intermediate magnetic layer; a first coil conductor provided in the first magnetic layer; and a second coil conductor provided in the second magnetic layer. The intermediate magnetic layer has a saturation magnetic flux density lower than saturation magnetic flux densities of the first magnetic layer and the second magnetic layer in a first region that overlaps with the first coil conductor and the second coil conductor in plan view.

Abstract: A method for controlling a fault of a three phase four wire interlinking converter system according to one embodiment of the present disclosure comprises obtaining a first d-q-o coordinate plane based on an internal phase angle of output voltage produced from each phase of an inverter; converting the first d-q-o coordinate plane to a second d-q-o coordinate plane based on the o-axis configured differently from the first d-q-o coordinate plane; obtaining an output voltage vector for determining a fault location by performing d-q transform on the second d-q-o coordinate plane; determining occurrence of a fault and an area related to the fault based on the output voltage vector; and in the occurrence of the fault, allocating a zero voltage vector to the area related to the fault.

Abstract: An electronic component includes an element body and outer electrodes on the element body. The element body includes top and bottom opposed surfaces, and side surfaces connecting the top and bottom surfaces. An outer electrode includes a lower layer electrode on the top surface and the bottom surface, and an upper layer electrode overlying the lower layer electrode and extending from an upper side of the lower electrode onto the side surface. When viewed from a direction orthogonal to the top and bottom surfaces, an edge of the lower layer electrode is disposed at a position farther from the side surface at which the upper layer electrode is provided than a position of an edge of the upper layer electrode, and a radius of curvature of the edge of the lower electrode is larger than a radius of curvature of the edge of the upper layer electrode.

Abstract: A reactor includes a coil including wound portions; and a magnetic core that includes a set of core pieces that engage with each other and is arranged inside and outside of the wound portions. One core piece includes, at an end portion thereof, a recessed portion having a ring-shaped opening edge that is open toward the other core piece. The other core piece includes, at an end portion thereof, a protruding portion that is configured to be fit into the recessed portion. Both of the core pieces include, in the wound portions, ring-shaped contact portions that are provided along the opening edges and at which the core pieces come into surface contact with each other, and gap portions formed by non-contact regions in which the inner peripheral surfaces forming the recessed portions and the outer peripheral surfaces of the protruding portions are not in contact with each other.

Abstract: A bender beam actuator includes a first layer of piezoelectric material and a second layer of piezoelectric material overlying a portion of the first layer of piezoelectric material, where a length of the first layer of piezoelectric material is at least 2% greater than a length of the second layer of piezoelectric material.

Abstract: An electromagnetic coil assembly for a control rod driving mechanism, comprising coils and a yoke for embedding the coils, wherein damascene holes are disposed on the yoke, the coils are installed in the damascene holes, the yoke comprises first yokes and second yokes, and the damascene holes are disposed on the first yokes; the first yokes are connected with the second yokes, and a through hole for cooperating with a sealing shell assembly is disposed on the second yokes; and a thermal conductivity of the first yokes is stronger than a thermal conductivity of the second yokes. The method is the processing method of the assembly. The coil assembly provided in technical solution or the coil assembly obtained by the method can remarkably reduce the temperature inside the coil, thereby improving the reliability of the CRDM electromagnetic coil assembly and prolonging the service life of the CRDM electromagnetic coil assembly.

Abstract: A voltage generator circuit can be structured to provide an output voltage having a substantially flat temperature coefficient by use of a circuit loop having transistors and a resistor arranged such that, in operation, current through the resistor has a signed temperature coefficient. The current behavior can be controlled by an output transistor coupled to another transistor, which is coupled to the circuit loop, with this other transistor sized such that, in operation, a voltage of this other transistor has a signed temperature coefficient that is opposite in sign to the signed temperature coefficient of the current through the resistor. Embodiments of voltage generator circuits can also include additional components to trim output voltage, to provide unconditional stability, or other features for the respective voltage generator circuit. In various embodiments, a voltage generator circuit can be implemented as a low drop-out (LDO) voltage regulator.

Abstract: A surface mount coil component includes an element body with a first surface, a second surface that opposes the first surface, and a third surface connecting the first surface and the second surface, the element body being defined by a compact including magnetic particles; a first conductor pattern provided at the first surface of the element body; a second conductor pattern provided at the second surface of the element body; input/output terminals provided at the third surface of the element body; and metal pins embedded in the element body, ends of each metal pin being connected to the first and second conductor patterns. The first conductor pattern, the second conductor pattern, and the metal pins define a coil conductor. The input/output terminals are defined by a pair of metal pins exposed at the third surface.

Abstract: A controller (203) comprises a processing system (205) for controlling a power electronic converter during a short circuit taking place in a direct voltage side of the power electronic converter. The processing system recognizes a direction of current in a phase (126-128) of an alternating voltage side of the power electronic converter, sets a high-leg controllable switch (108-110) of the phase to a conductive state while keeping a low-leg controllable switch (111-113) of the phase in a non-conductive state when the recognized direction of the current is outwards from the power electronic converter, and otherwise sets the low-leg controllable switch to the conductive state while keeping the high-leg controllable switch in the non-conductive state. Thermal loadings of freewheeling diodes (114-119) of the power electronic converter are reduced since currents needed to burn input fuses (122) of the power electronic converter are shared between the controllable switches and the freewheeling diodes.

Abstract: An inductor component 1 includes a resin layer 2, a protective film 4, two metal pins 5 provided to stand in the resin layer 2, and a metal plate 6 joined to both of the metal pins 5, and both of the metal pins 5 and the metal plate 6 configure an inductor electrode 7. Both of the metal pins 5 are provided to stand in the resin layer 2, upper end surfaces 5a thereof are exposed to an upper surface 2a of the resin layer 2, and lower end surfaces 5b thereof are exposed to a lower surface 2b. Recesses 8 are formed around the peripheral edges of the upper end surfaces 5a of both of the metal pins 5 by laser beam irradiation.

Abstract: A multilayer substrate includes a stacked body of insulating base material layers and conductor patterns on the insulating base material layers. A thickness adjustment base material layer includes a frame portion, an opening portion inside the frame portion, and an island shaped portion inside the frame portion, and connection portions to connect the island shaped portion to the frame portion. The conductor patterns, in a stacking direction of the insulating base material layers, are wound around the island shaped portion. A line width of the connection portions is smaller than the width of the island shaped portion connected to the frame portion through the connection portions. An area overlapped with the conductor patterns is larger in the opening portion than in the frame portion and the island shaped portion.

Abstract: An electromagnetic relay includes a base, a spool provided on the base, a coil wound on the spool, a yoke inserted into a hole formed in the spool, an armature movably provided on the base, a movable contact fixed on the base, a static contact fixed on the base, and a driving member connected between the armature and the movable contact. The yoke is L-shaped. The yoke and the armature form a rectangular magnetic loop.

Abstract: A multi-phase power supply includes a plurality of phase controllers each driving a first terminal of a respective inductor alternatively between an input voltage and a ground voltage to regulate an output voltage in a work mode, keeping the first terminal of the respective inductor in a high impedance state during a non-work mode, having an input for receiving an enable signal for selecting between the work mode and the non-work mode, and generating a current monitor signal to represent a current through the respective inductor during both the work mode and the non-work mode, and a controller coupled to each phase controller for selectively enabling respective ones of the phase controllers in response to a load demand, receiving the current monitor signal from each phase controller, and selectively shutting down the multi-phase power supply when a total of current monitor signals from the phase controller exceeds a threshold.

Abstract: A piezoelectric element includes a first electrode; a piezoelectric layer, placed on or above the first electrode, containing potassium, sodium, niobium, titanium, and oxygen; and a second electrode placed on or above the piezoelectric layer.

Abstract: A magnetic and electrical circuit element including magnetic-flux-conducting posts, and a multi-layer structure formed with an electrically-conductive material. The multi-layer structure includes multiple layers forming a stack of layers along a length of the posts, said multi-layer structure configured as primary and secondary windings of a transformer. The primary winding is embedded in the multi-layer structure and wound around the magnetic-flux-conducting posts in such a way that a magnetic field induced in each of the magnetic-flux-conducting posts has a magnetic field polarity opposite to a polarity of the respective magnetic field of the magnetic-flux-conducting post adjacent the respective magnetic-flux-conducting post. Around each of the magnetic-flux-conducting posts, there is a respective one of the secondary windings connected to a semiconductor device.

Abstract: One object of the present invention is to provide a coil element having a reduced thickness but is less prone to be broken. The coil element according to an embodiment of the present invention has a rectangular parallelepiped shape and has a principal surface including long sides and short sides. The coil element includes a drum core, a winding wound around the drum core, a first external electrode electrically connected to one end of the winding, and a second external electrode electrically connected to the other end of the winding. The drum core in the embodiment includes a first flange, a second flange, and a winding core connecting between the first flange and the second flange. The winding core extends along the short sides of the principal surface.