| 摘要 |
944,817. Dry rectifier assemblies. SIEMENS-SCHUCKERTWERKE A.G. March 17, 1961 [March 30, 1960; Aug. 25, 1960; Sept. 16, 1960; Feb. 9, 1961], No. 9958/61. Heading H1K. Two sets of rectifier units are produced using the same automatic production machine. The units of the first set, which are all the same, each consist of a stack of rectifier plates in seriesaiding relationship with a metal plate at the centre of the stack and another at one end. The units of the second set, all the same, differ from those of the first set by the replacement of an equal number of rectifier plates on each side of the central metal plate by metal dummy plates. The first and second sets of units are mounted in first and second housings respectively to form rectifier assemblies. A typical assembly made in this way consists of units as shown in Fig. 1 embedded side by side in resin 12 in a flattened metal or insulator cup 11 (Fig. 2). Each unit comprises four plate rectifiers 1, central connecting plate 6, end contact 5, resilient plate 4 and insulating foil 2 clamped together by a clip 3 making electrical contact with plate 4. Plate 6, contacts and clip 3 have integral tabs extending therefrom in the same direction and spaced apart a suitable distance for fitting into standardised printed circuit arrangements. In the Fig. 2 assembly the clips in both units are formed with extensions through which they are connected in series opposition by metal strip 10, and the tab on the clip of the second unit is omitted. At least some of the tabs may be spirally twisted to increse their flexibility. In units for containing larger numbers of plates (Fig. 10), to prevent the clip springing open the resilient plates 44 are formed with projections 44a and the clip with slots in its lateral edges where it folds over the projections. In an alternative unit (Figs. 7 and 8) the holder consists of apertured insulating block 23 and a metal clip 27 located by wing portions 28 engaging shallow grooves 26 in the block and by a lip 29 on the block. The clip serves to hold the plates together and to electrically connect the bottom plate to a contact 22 insulated by plate 32 from the other contact 32. Various interconnections of the units in a common housing are described. |
