Abstract: A resistance-limited electrical interface includes a printed wiring board, a bus bar, a U-shaped conductor, and a retainer. The bus bar extends from the printed wiring board. The U-shaped conductor has a first wall and an opposed second wall, the bus bar arranged between the first and second wall to define a conductive joint between the first wall and the bus bar. The retainer is compressively seated between the second wall and bus bar opposite the conductive joint to exert force on the bus bar for retaining the bus bar in the U-shaped conductor and limiting electrical resistance of the conductive joint.

Abstract: A resistance-limited electrical interface includes a printed wiring board, a bus bar, a U-shaped conductor, and a retainer. The bus bar extends from the printed wiring board. The U-shaped conductor has a first wall and an opposed second wall, the bus bar arranged between the first and second wall to define a conductive joint between the first wall and the bus bar. The retainer is compressively seated between the second wall and bus bar opposite the conductive joint to exert force on the bus bar for retaining the bus bar in the U-shaped conductor and limiting electrical resistance of the conductive joint.

Abstract: A circuit board arrangement includes a deflector configured to guide flow over an electronic component on a circuit board disposed in an air flow. A method for thermal management of a circuit board includes modifying an air flow over the circuit board to increase speed or direction the air flow over a component of the circuit board using a deflector.

Abstract: A circuit board arrangement includes a deflector configured to guide flow over an electronic component on a circuit board disposed in an air flow. A method for thermal management of a circuit board includes modifying an air flow over the circuit board to increase speed or direction the air flow over a component of the circuit board using a deflector.

Abstract: An electronic assembly provides fault tolerant cooling for the electrical components of the electronic assembly to prevent premature failure of the electronic components due to overheating. The electronic assembly includes a chassis (20) having an exterior surface (22) and an interior cavity (24), a plurality of heat generating components (26) mounted in the cavity (24) and in heat exchange relation to the chassis (20) to reject generated heat to the chassis (20), and a fault tolerant heat exchanger (28) on the exterior surface (22) in heat exchange relation with the chassis (20). The heat exchanger (28) includes a passive heat sink (30) and an active heat sink (32). The passive heat sink (30) is configured and sized to reject the generated heat of the electrical components (26) at a first rate from the chassis (20) to the environment surround the chassis (20) via radiation and natural convection.

Abstract: A cooling system is provided for compartments containing a heat generating apparatus, such as solid state variable speed constant frequency system, whose functionality is essential and whose cooling needs vary significantly during use. A main coolant channel is used to provide cooling to the heat generating apparatus under normal operating conditions. During an overtemperature condition; an auxiliary coolant channel provides additional coolant to the heat generating apparatus. Both of the channels are partially disposed within the heat generating apparatus, and they are both completely separate and free of fluid communication with each other. Each channel also contains a pump, such as a fan, for applying a motive force necessary to deliver the coolant to the heat generating apparatus.

Abstract: A ram air flow system for an aircraft or the like wherein a ram air duct is provided with an inlet through which air enters the duct and an outlet through which air leaves the duct. A fan is located in the duct between the inlet and the outlet and is located to define a bypass portion of the duct through which air can pass through the duct past the fan. Doors are mounted in the duct for movement between a first position covering the fan to allow air to bypass the fan, and a second position exposing the fan while blocking the bypass portion of the duct to allow air to flow through the fan.