| 摘要 |
1,066,891. Semi-conductor devices; circuit assemblies. BROWN BOVERI & CO. Ltd. Jan. 19, 1966 [Jan. 21, 1965], No. 2460/66. Headings H1K and H1R. Semi-conductor rectifiers 2 are mounted on insulating plates 4 set at different levels in the walls of a duct 1 through which cooling air is drawn by a fan 5, the air entering the duct through an opening 6 at the lower end and slits 7 between adjacent levels of the plates 4. The slits 7 may vary in size and number from one level to another. Fins 3 project into the duct from the rectifiers 2. |
