| 摘要 |
1,187,619. Printed circuits. FERRANTI Ltd. 3 Dec., 1968 [8 Dec., 1967], No. 55818/67. Heading H1R. In an electrical interconnection grid comprising an insulating board having a set of parallel conductors on each side, the conductors of one set being skew with respect to the conductors of the other set, the conductors 10, 11 of at least one set are arranged in pairs with the conductors 10, 11 of each pair interconnected at spaced locations along the pair by a conductive strip 12 electrically connected with a conductor of the other set by hole 14 lined with conductive material. In the grid of Fig. 1, the conductors of the set on the bottom side of the board are arranged in a different pattern to those on the top side. The desired circuit is formed by cutting conductors 10, 11, strips 12 or lugs 13 as at 15, and also conductors on the other side of the board. In a modification, Fig. 3 (not shown), lug 13 extends on both sides of the enlarged portion through which hole 14 is formed to connect adjacent connecting strips 12 and the same pattern of conductors is formed on both sides of the board. The holes 14 may be formed directly through the connecting strips 12, Fig. 2 (not shown). By making the insulating board very thin and using the patterns as shown in Fig. 4, all the cuts to form the desired circuit may be made from the same side, the solid dots indicating the extremities of the cuts. The parallel conductors need not be straight. |
