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Packaging with a Flexible Container for Oil-Filled or Evaporative-Cooled Electronic Equipment

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2 Author(s)
Goltsos, C. ; Raytheon Company, Mass ; Mark, M.

In electronic packages where high voltages exist, a high dielectric strength environment surrounding the components is necessary. Liquid-filled units have used various oils which in addition to dielectric strength provide good thermal paths for cooling; evaporative-cooled units often use refrigerants. In either case allowance, volume-wise, must be made for thermal expansion of the fluid. A simple, novel, weight-saving technique for accomplishing this consists essentially of replacing the conventional container with a flexible one (for example, fabric-reinforced rubber). The flexible container then expands and contracts accomodating volume variations in the fluid. Design details, test results, and a general evaluation illustrating the adaptability of the flexible container as a practical design tool are discussed.

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Product Engineering and Production, IRE Transactions on  (Volume:6 ,  Issue: 3 )