Provided is a semiconductor module that can improve the insulation properties at terminals to which electric power is supplied. A semiconductor module includes a negative electrode terminal connected to a negative electrode side of direct current power; a positive electrode terminal disposed above the negative electrode terminal and connected to a positive electrode side of the direct current power in a state where an exposed portion of the negative electrode terminal including one end of the negative electrode terminal is exposed; an insulating sheet disposed between the negative electrode terminal and the positive electrode terminal for insulation between the negative electrode terminal and the positive electrode terminal in a state where an exposed portion of the insulating sheet is exposed between the one end of the negative electrode terminal and one end of the positive electrode terminal; and a first dielectric portion formed to cover at least a corner of the one end of the positive electrode terminal, the corner being in contact with the insulating sheet.

A semiconductor device having a high cutoff resistance capable of suppressing local current/electric field concentration and current concentration at a chip termination portion due to an electric field variation between IGBT cells due to a shape variation and impurity variation during manufacturing. The semiconductor device is characterized by including an emitter electrode formed on a front surface of a semiconductor substrate via an interlayer insulating film, a collector electrode formed on a back surface of the semiconductor substrate, a first semiconductor layer of a first conductivity type in contact with the collector electrode, a second semiconductor layer of a second conductivity type, a central area cell, and an outer peripheral area cell located outside the central area cell.

A frequency changer cabinet includes a transformer cabinet to accommodate a transformer, a first air outlet being disposed at a top of the transformer cabinet, and a first air inlet being disposed at a side wall; and a power unit cabinet to accommodate at least one power unit, a second air inlet being disposed at a front side wall, and a rear side of the being connected to the transformer cabinet. In an embodiment, a first air passage baffle and a second air passage baffle are respectively disposed at an upper end and a lower end of a secondary coil, such that air entering from the power unit cabinet to the transformer cabinet can be directly sent to the secondary coil. Further, air entering from the first air inlet can pass through a primary coil and the secondary coil, and then flow out of the transformer cabinet.

An electrical assembly may include a first contactor, a second contactor, a bus bar assembly electrically connected to the first contactor and the second contactor, a cooling member, a bracket configured to connect the cooling member to the first contactor and the second contactor, and/or potting material that may be disposed at least partially between the bus bar assembly and the cooling member. A method of assembling an electrical assembly may include disposing the first contactor and the second contactor on a fixture, connecting the bus bar assembly to the first contactor and the second contactor, connecting the bracket to the bus bar assembly, the first contactor, and/or the second contactor, connecting the cooling member to the bracket, and/or providing the potting material between the bus bar assembly and the cooling member.

Converter device configured to convert direct voltage and current into alternating voltage and current to be supplied to a load (L). The converter device comprises a bank (11) of capacitors (12), a plurality of power semiconductors (13), a heat sink (14) and a casing (15).

A flying capacitor switching cell-system includes at least two flying capacitor switching cells, wherein each of the cells comprises an arrangement of at least one semiconductor system, and wherein the cells are in parallel in an electrical circuit.

The present disclosure relates to an inverter mounting structure having improved ease of assembly and durability, and capable of simplifying the structure of an inverter. According to one aspect of the present invention, provided is an inverter mounting structure comprising: a bracket fixed to an enclosure or a wall surface and forming an inverter accommodation space in which the inverter is accommodated and coupled; and an option case coupled to the outside of the bracket.

The invention concerns a magnetic core device (1) to be used in a power converter (100), comprising at least one fixation leg (7), and a body (51) comprising a magnetic core (3). The at least one fixation leg (7) extends from the body (51), and is configured to firmly fixate the magnetic core device (1) to a target component (110) such as a housing (110) of the power converter (100). The at least one fixation leg (7) and the body (51) are integrally formed as one-piece.

A switching power supply is mounted on a printed circuit board. A first wiring layer of the printed circuit board includes a DC line through which a DC voltage is supplied, and a first ground region and a second ground region formed at a distance from the DC line and with the DC line interposed between them. A lower-layer ground region is formed in a second wiring layer. An insulating layer includes multiple first through holes provided along one side of the first ground region so as to electrically connect the first ground region and the lower-layer ground region, and multiple second through holes provided along one side of the second ground region so as to electrically connect the second ground region and the lower-layer ground region.

A power adapter with a Lightning female socket includes a main body and a housing, a Lightning female socket and an adapter unit on the main body, the Lightning female socket being electrically connected to the adapter unit; the housing being provided with an opening communicated to the Lightning female socket, the housing being sleeved on an exterior of the main body, and making the opening correspond to the Lightning female socket; the adapter unit being capable of providing electrical energy directly or indirectly to the Lightning female socket and outputting voltage and current outwardly through the Lightning female socket. By designing a power adapter with a Lightning female socket, a charging device and system, communication with an external terminal device and charging to the outside is achieved through the Lightning female socket.