Abstract: An apparatus includes, on a top layer of a circuit board, a first and a second synchronous rectifier groups (SRGs) placed along first two opposite sides of a first phase of a transformer including three phases. A second and a fourth SRGs are placed along the first two opposite sides on a bottom layer of the circuit board. The first and second SRGs are connected between a first terminal of the first phase and a grounding terminal. The third and fourth SRGs are connected between a second terminal of the first phase and the grounding terminal. Two filter capacitor groups are placed along second two opposite sides of the first phase on the top layer. Another two filter capacitor groups are placed along the second two opposite sides on the bottom layer. The four filter capacitor groups are connected to a third terminal of the first phase.

Abstract: An apparatus includes a case, a first printed circuit board (PCB) and a second PCB within the case. The case includes a top portion and a bottom portion opposite to each other. The first PCB has a first surface and a second surface opposite to each other, and is attached to the top portion of the case via the second surface of the first PCB. At least one heat-generating device is mounted on the first surface of the first PCB. The second PCB has a first surface and a second surface opposite to each other, and is attached to the bottom portion of the case via the second surface of the second PCB. At least one heat-generating device is mounted on the first surface of the second PCB. The apparatus may include more PCBs. An inner shell may be provided forming an air duct within the case.

Abstract: A transformer winding includes a first metal sheet of a first sheet type and a second metal sheet of a second sheet type stacked with one on top of the other, and an insulating film disposed between the first and second metal sheets. Each sheet type includes a body in a ring shape with an opening on a lower portion of the ring shape, and a first terminal and a second terminal extending respectively downward from two ends of the opening. The first and second sheet types have same distance between the first and second terminals, and different distances from the first terminals to a centerline of the ring shape. The transformer winding may be made different by changing the distances from the first terminals to the centerline. A transformer including the transformer winding as the secondary winding is also provided.

Abstract: An apparatus for dissipating heat resulting from providing power to a power consumer in an internet data center includes a rack having a walls defining a recess, a fan-less power supply having a housing sized and shaped to conform to the recess, and a connection between the power supply and the consumer. As a result, heat generated by the power supply in the course of delivering power to the consumer is absorbed by the walls of the recess.

Abstract: A power supply for providing power to a power consumer includes comprising power-handling circuitry disposed in a housing that comprises a shell and a heat guide. The shell has an outer surface and an inner surface. The inner surface has a heat guide disposed therein. The heat guide has a higher thermal conductivity than that of the outer surface. The shell passively dissipates heat generated by the power-handling circuitry at a rate sufficient to maintain the power-handling circuitry at an operating temperature.

Abstract: A method for controlling multiple power supplies includes configuring a plurality of power supplies to provide power to respective loads coupled to the plurality of power supplies, wherein inputs of the plurality of power supplies are coupled to an input voltage bus, and during a startup process, coordinating the plurality of power supplies such that the plurality of power supplies is powered up in a controllable manner, wherein as a result of coordinating the plurality of power supplies, a surge current flowing through the input voltage bus is reduced.

Abstract: A dual-input power supply has two power paths that connect a server in a data center to electrical power. Each power path has a first stage that comprises a power-factor correction circuit. The power paths share a common second stage that comprises a dc/dc converter. The first stages of the power paths collectively define a pair of first stages that is disposed either within a package that is off the motherboard or without a package and on the motherboard. Similarly, the second stage is disposed either within a package that is off the motherboard or without a package and on the motherboard.

Abstract: A dual-input power conversion system includes a first primary side power network coupled between a first ac power source and a first primary winding of a transformer, a second primary side power network coupled between a second ac power source and a second primary winding the transformer, a secondary side power network coupled to a secondary side of the transformer, and a power converter coupled between the secondary side power network and a load.

Abstract: Disclosed is a winding method using an air expansion structure, which accurately controls the winding process by preset inflation parameter values and preset winding parameter values, so as to create space for a membrane to contract after winding, that is, to relieve the stress of the membrane, so as to avoid the situation of deviation or innermost side wrinkling during winding of the membrane, and the rewinding procedure is not needed, so that the complexity of the working procedure is reduced.

Abstract: An apparatus comprising a power supply, which has first and second components, and actuarial circuitry in communication with the power supply. The actuarial circuitry forecasts the power supply's life expectancy based on real-time measurements of operational parameters of said first and second components.

Abstract: Methods of treating Alzheimer’s disease and other neurodegenerative and/or neurocognitive and/or neurodevelopmental diseases are described. The methods comprise the administration of compounds that modulate an activity of cell division control protein 42 (Cdc42), such as the interaction between Cdc42 and intersectin (ITSN). Exemplary modulator compounds include thioureas, disulfonamides of fused aromatic systems (e.g., benzofuran), and acyl hydrazones, among others. Some of the modulator compounds act as activators of Cdc42, while others act as inhibitors. In some cases, the modulator compound has dual functionality and the ability of the modulator compound to act as an inhibitor or activator depends on whether or not Cdc42 is already activated in a particular disease stage or biological environment by an upstream activating signal of Cdc42.

Abstract: An apparatus comprising an ac/dc power supply for providing power to power consumers in an internet data center or to a stand-alone server includes power-handling circuitry and a passive heat-dissipation system that passively dissipates heat generated by the power-handling circuitry. The passive heat-dissipation system comprises a housing that encloses that power-handling circuitry and a thermal network that provides thermal communication between the power-handling circuitry and faces of the housing.

Abstract: A dual-input power supply has two power paths that connect a server to electrical Each power path has a first stage that comprises a power-factor correction circuit. The power paths share a common second stage that comprises a dc/dc converter. The first stages of the power paths collectively defining a pair of first stages that is disposed either within a package that is off the motherboard or without a package and on the motherboard. Similarly, the second stage is disposed either within a package that is off the motherboard or without a package and on the motherboard.

Abstract: A dual-input power conversion system includes a first primary side power network coupled between a first ac power source and a first primary winding of a transformer, a second primary side power network coupled between a second ac power source and a second primary winding the transformer, a secondary side power network coupled to a secondary side of the transformer, and a power converter coupled between the secondary side power network and a load.

Abstract: A dual-input power conversion system includes a first primary side power network comprising a first hold-up capacitor, wherein the first primary side power network has inputs configured to be coupled to a first power source, and outputs coupled to a transformer, a second primary side power network comprising a second hold-up capacitor, wherein the second primary side power network has inputs configured to be coupled to a second power source, and outputs coupled to the transformer, and a secondary side power network having inputs coupled to a secondary side of the transformer, and outputs coupled to a load, wherein the first primary side power network and the second primary side power network are configured such that a voltage across one of the first hold-up capacitor and the second hold-up capacitor is maintained by a voltage reflected from the secondary side to a corresponding primary side.

Abstract: An AC/DC power supply for providing power to a processing device includes a power-supply housing and power-handling units connected to the power-supply housing to permit flow of heat to the power-supply housing by conduction. The power-supply housing comprises an intake port and an exhaust port that have been configured to use moving coolant fluid that made to move by a fan on the processing device to cause convective cooling of the power-handling units.

Abstract: A cryptocurrency mining rig comprising an ac/dc power supply for providing power to a mining machine includes power-handling circuitry and a passive heat-dissipation system that passively dissipates heat generated by the power-handling circuitry. The passive heat-dissipation system comprises a housing that encloses that power-handling circuitry and a thermal network that provides thermal communication between the power-handling circuitry and faces of the housing.

Abstract: A cryptocurrency mining rig comprising an ac/dc power supply for providing power to a mining machine includes power-handling circuitry and a passive heat-dissipation system that passively dissipates heat generated by the power-handling circuitry. The passive heat-dissipation system comprises a housing that encloses that power-handling circuitry and a thermal network that provides thermal communication between the power-handling circuitry and faces of the housing.

Abstract: An apparatus comprising an ac/dc power supply for providing power to power consumers in an internet data center or to a stand-alone server includes power-handling circuitry and a passive heat-dissipation system that passively dissipates heat generated by the power-handling circuitry. The passive heat-dissipation system comprises a housing that encloses that power-handling circuitry and a thermal network that provides thermal communication between the power-handling circuitry and faces of the housing.

Abstract: Methods of treating Alzheimer's disease and other neurodegenerative and/or neurocognitive and/or neurodevelopmental diseases are described. The methods comprise the administration of compounds that modulate an activity of cell division control protein 42 (Cdc42), such as the interaction between Cdc42 and intersectin (ITSN). Exemplary modulator compounds include thioureas, disulfonamides of fused aromatic systems (e.g., benzofuran), and acyl hydrazones, among others. Some of the modulator compounds act as activators of Cdc42, while others act as inhibitors. In some cases, the modulator compound has dual functionality and the ability of the modulator compound to act as an inhibitor or activator depends on whether or not Cdc42 is already activated in a particular disease stage or biological environment by an upstream activating signal of Cdc42.