Parallel resistance network prodn. - uses spraying process and backing transverse strip with interconnected groups of tracks

摘要

The resistance network consists of parallel resistance tracks on a support strip made from an organic material. The resistance tracks consist of a mixture of hardened lacquer or plastic with electrically conducting particles. The conductivities of the tracks differ. It is possible to achieve close tolerances on these strip resistors which are suitable for use on printed circuits. The resistance tracks 3 - 6) are sprayed onto the support strip (1) and dried and if necessary cured. There is a backing strip (8) with the resistance tracks extending beyond its width and with the ends forming a row of parallel prongs (10). There is also a prong (11) at the end now aligned with any resistance track. The tracks can be interconnected to form two or more groups of resistances.