Abstract: A recessed lighting fixture includes a lamp housing and a separate compact junction box, which contains a power supply that drives the lamp and serves in part to divide the interior cavity of the junction box into two separate wiring compartments. The junction box has two end walls spaced along an axis and a releasably secured. The lighting fixture is particularly suitable for retrofit installations, especially where small aperture downlights are desired.

Abstract: An Auxiliary Power Unit (“APU”) for an aircraft with reduced weight, but which at the same time meets all fire-related airworthiness standards. The APU comprises a metallic housing having mounts for attaching the housing to an external structure. The APU further comprises at least one temperature sensor suitable for detecting temperature under fire conditions. The temperature sensor is coupled with the mounts for sensing temperature at the housing.

Abstract: Various embodiments provide safety disconnect systems for a power system. In one aspect, a safety disconnect system includes an enclosure operative to receive a plurality of input power lines into the enclosure and provide a plurality of output power lines out of the enclosure. Each input power line is coupled to and paired with a corresponding one of the output power lines, where each input power line and output power line is operative to provide power from a power source. A plurality of switches are provided in the enclosure, each of these switches coupled between an associated one of the pairs of input power line and output power line, and each switch operative to disconnect the associated input power line from the corresponding output power line.

Abstract: An electrical chassis for use in high temperature environments is disclosed. The electrical chassis may be employed, for example, in close proximity to the combustion chamber of a jet engine. The electrical chassis is constructed with a substrate formed from a material with low thermal conductivity and low electrical conductivity, such as polyetheretherketone. A reflective surface may be disposed on a housing containing the substrate to reduce the absorption of radiation. A heat sink and fluid inlet and outlet may also be arranged to remove heat generated by the electrical components.

Abstract: A computer server rack for mechanically supporting and electrically powering computer servers is provided. The rack includes DC-to-DC conversion circuits which are configured to convert a relatively high DC facility voltage (e.g. 380 volts DC provided throughout a data center on busways and/or appropriate wiring) to DC voltage useable directly by a computer server (e.g. 12 volts DC). The conversion circuits are highly efficient and convert substantially all of power input to the circuits at the input voltage and input DC current to a high DC output current at a lower output voltage.

Abstract: This application relates to a low profile, small footprint cooling stack that does not extend substantially beyond a footprint of an integrated circuit to which it is affixed. The cooling stack utilizes a number of beam springs that supply a seating force to the integrated circuit by way of a metal slug. In some embodiments, a bottom surface of the metal slug can be contoured in accordance with a top surface of the integrated circuit and/or socket. In other embodiments a gap between peripheral portion of a bottom surface of the metal slug and an associated printed circuit board can be filled by a layer of foam to reduce auditory signals generated by the integrated circuit.

Abstract: The invention relates to the cooling of the item of electronic equipment comprising an electronic compartment formed from a housing and at least one electronic board assembled in the housing. The board is intended to be assembled in a removable manner in the housing by a movement of translation along a groove in order to reach an operating position, the assembly of the board (11) being carried out through an insertion face of the housing. According to the invention, the item of equipment comprises a heat sink of elongate shape disposed along the groove making it possible to collect the heat emitted by the components and means of extraction of the heat collected by the heat sink, the extraction means being located outside of the electronic compartment.

Abstract: Methods and systems may provide for a computing system including an electrical component, a heat exchanger coupled to the electrical component, and a fan having a rotor with a plurality of blades, one or more inlet sides and one or more outlet sides disposed adjacent to the heat exchanger. The computing system may also include an obstruction disposed adjacent to at least one of the one or more inlet sides of the fan, wherein a tone to be generated by the obstruction reduces a tonal noise associated with the fan during operation.

Abstract: Methods and systems for minimizing exposure to live parts in a panelboard allow safe insulation and removal of a circuit breaker or other electrical devices from the panelboard. The methods and systems provide an isolation assembly for the panelboard that isolates and prevents contact with energized portions of the circuit breaker as well as the conductors in the panelboard. The isolation assembly covers up the energized part of the circuit breaker, including the line terminal extending from the circuit breaker, and any accessible portion of the conductors in the panelboard. Additionally, for bolt-on type circuit breakers, the isolation assembly replaces the bolts or screws typically used to fasten the line terminals to the conductors in the panelboard with standoff screws that insulate metal screwdrivers and similar tools from the energized part of the circuit breaker.

Abstract: A clamping element is configured for mounting a rail element bearing electrical/electronic devices on a supporting portion of a switchgear cabinet. The clamping element includes a body provided with a coupling portion configured for engaging with an opening portion of the rail element. The coupling portion is configured for enabling the body to be at least one of coupled with and removed from the rail element when the body is positioned in a first configuration relative to the rail element. The coupling portion is configured for hindering removal of the body from the rail element when the body is positioned in a second configuration relative to the rail element. The clamping element also includes a clasping device protruding from the body and configured for removably connecting the body to the supporting portion to mount the rail element within the switchgear cabinet.

Abstract: A carrier for a display module, in particular for an LED display module, having an arrangement for accommodating and/or fastening a display module, and having an air inlet opening and at least one air outlet opening, connected to one another by air ducts through which cooling air can flow to cool the display module, the carrier having a central air inlet opening that is connected via air ducts to at least two air outlet openings situated at different locations of the carrier, and the air ducts being fashioned between ribs provided on the carrier. Also described is a display device having such a carrier, and a display module carried thereby.

Abstract: The invention relates to an arrangement for operating a current converter, in particular an inverter, wherein the converter is located at a path of travel of land vehicles or at a parking space of a land vehicle, the converter being adapted to support operation of at least one vehicle, the converter is combined with a cooling device adapted to cool the converter during operation, the cooling device is designed to use a heat transport medium in order to transport heat away from the converter, the arrangement comprises at least one pole and/or at least one supporting structure which is also located at the path of travel or at the parking space, the pole and/or the supporting structure extends upwards from ground, the arrangement comprises a conduct for conducting the heat transport medium and the conduct extends from the cooling device to the pole and/or to the supporting structure and also extends inside the pole and/or inside the supporting structure so that heat can be transferred from the heat transport med

Abstract: In a semiconductor device, heat radiation plates are respectively disposed on a front surface side and a rear surface side of semiconductor chips in an upper arm and a lower arm. A lead-out conductor part includes a parallel conductor that includes a positive electrode terminal, a negative electrode terminal, and an insulating film disposed between the positive electrode terminal and the negative electrode terminal, and the positive electrode terminal and the negative electrode terminal are disposed oppositely while sandwiching the insulation film. The semiconductor chips are covered by a resin mold part, surfaces of the heat radiation plates opposite to the semiconductor chips, a part of the positive electrode terminal, and a part of the negative electrode terminal are exposed from the resin mold part, and at least a part of the parallel conductor in the lead-out conductor part enters the resin mold part.

Abstract: An object of the present invention is to improve the cooling performance of a capacitor module used in a power conversion apparatus. The power conversion apparatus according to the present invention includes a power semiconductor module, a capacitor module, a flow path forming body that forms a flow path through which a cooling refrigerant flows . The flow path forming body includes a first flow path forming body that forms a first flow path part for cooling the power semiconductor module, and a second flow path forming body that forms a second flow path part for cooling the capacitor module. The first flow path forming body is provided on a side portion of the second follow path forming body and is integrally formed with the second flow path forming body. The second flow path forming body forms a housing space for housing the capacitor module above the second flow path part . The first flow path part is formed at a position facing the side wall that forms the housing space.

Abstract: Systems and devices relating to an integrated housing for microinverters. The housing has a cavity for housing the circuitry of the microinverter. The housing is mountable on a back sheet of a PV module by way of the housing's top cover. An opening at the back of the housing accommodates DC contacts coming from the PV module while a void configured for an output port is also present in the housing. When mounted on the PV module, the housing is spaced apart from the module.

Abstract: Methods and systems for limiting damage caused by arcs in bus stacks provide an arc transfer feature on each side of the bus stack. The arc transfer feature captures any arcs forming near busbar connection points and transfers the arc away from the busbar connection points to the interior of the bus stack. Phase barriers along the length of the interior of the bus stack then direct the arcs toward the end of the bus stack. At the end of the bus stack, a bus end interrupter receives and extinguishes the arcs.

Abstract: Dual starters and/or feeders are positioned in a unit housing to be offset from one another in a front to back direction to provide a compact configuration for a MCC cabinet. The dual starters or feeders can communicate with a respective external handle attached to an inwardly oriented shaft. The handles can be rotary handles that connect to a respective gear assembly that transforms rotational input to linear input.

Abstract: A method for limiting temperature variation of an electrical component includes detecting a switch from passive to active states and, in response, varying a potential difference between capacitor electrodes from a first value to a second value, the electrodes being mechanically and electrically insulated from each other by a layer of electrocaloric dielectric, and in response to detecting a switch from active to passive states, varying the potential difference between the electrodes from the second to the first value.

Abstract: A power supply device includes a capacitance partition, a control partition, a power switching partition, a thermal conduction partition, and a magnetic partition. The thermal conduction partition includes electrical connections to connect other partitions. The thermal conduction partition provides for magnetic shielding of the magnetic partition and thermal dissipation in a substantially orthogonal direction to the electrical connections. The layering arrangement allows automated production and/or testing.

Abstract: Two-phase cooling systems, power electronics modules, and methods for extending a maximum heat flux point of a two-phase cooling device are disclosed. In one embodiment, a method of operating a two-phase cooling device having an inlet, a chamber fluidly coupled to the inlet, and a heat transfer surface configured to receive heat flux from a heat generating device includes detecting at least one two-phase process parameter of the two-phase cooling device, and controlling a temperature of a coolant fluid at the inlet such that it is a first inlet temperature Tin1 when the at least one two-phase process parameter is less than a threshold. The method further includes controlling a temperature of the coolant fluid at the inlet such that it is a second inlet temperature Tin2, where Tin2 is less than Tin1.