Method for producing a resistor element

Details Method for producing a resistor element Method for producing a resistor element

1991-03-28

1992-05-19

Echols, P. W.

Metal working

Method of mechanical manufacture

Electrical device making

338292, 338293, H01C 1706

Patent

active

051135779

ABSTRACT:
A resistor element includes a substrate, end pieces, a resistor layer applied to the substrate, a resistor array formed by cutting the resistor layer, and the resistor array having a resistance with a set-point value between the end pieces. A method for producing the resistor element includes cutting apart the resistor layer according to a predetermined cut structure. The resistor array is formed between the end pieces on the substrate in the form of at least one resistor track having a substantially constant width and constant cross section. The cut structure is shaped with two comb-like individual structures each having a main cut and a plurality of secondary cuts originating at the main cut and extending to a respective side. The secondary cuts of the individual structures are intermeshed with one another and the individual structures are spaced apart form one another. The resistance of the resistor array is set below the set-point value. The resistor element is calibrated to the set-point value by removing portions of the resistor layer. The resistor element is calibrated by making a trimming cut in the resistor layer originating at a free end of the secondary cut and extending parallel to the secondary cut as far as the main cut.

REFERENCES:
patent: 4429298 (1984-01-01), Oberholzer
patent: 4626822 (1986-12-01), Melkeraaen

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