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公开(公告)号：GB2241118A
公开(公告)日：1991-08-21
申请号：GB9003472
申请日：1990-02-15
Applicant: IBM
Inventor： BOLTON IVOR WILLIAM , GAUNT DAVID SYDNEY , CASTLE FRANK ERIC
Abstract: Electrical apparatus is described which may include one or more electrical devices, each being located in a corresponding one of a plurality of device positions defined in a first section of a housing. The system further includes at least one brushless dc motor driven centrifugal fan, and a power supply unit. In operation, the fans provide forced air cooling of the devices and power supply. Each of the devices is selected from a plurality of possible device types, each device type presenting a different impedance to the flow of cooling air.
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