| 摘要 |
1,067,195. Printed circuit assemblies. T. M. ELFVING. Oct. 29, 1963 [Oct. 29, 1962], No. 42698/63. Heading H1R. [Also in Division F4 ] A sheet 101 carrying a printed or painted circuit 102 is secured to one side of a double-walled aluminium coding panel which is formed with a plurality of interconnected passages 104 partly filled with refrigerant. A further sheet 105 is moulded to the other side of the panel, sheets 101 and 105 being provided with apertures which are aligned with and smaller than apertures 108 in the panel. Electrical connections may thus be made through the apertures between the circuit and electrical components mounted on opposite sides of the panel. The sheets 101, 105 may be formed of plastics or ceramic material, e.g. aluminium oxide or beryllium oxide, the surface of the latter material being metallized with silver, nickel or ridymanganese where necessary for soldering. |
