Process for manufacturing variable resistors, adjusted to a predetermined law of variation, and variable resistance obtained.

摘要

Process for manufacturing variable resistors adjusted to a predetermined law of variation and variable resistor obtained. Comprises several steps: a) forming arms (6) electro conductors from a side edge (7) of a resistive track to the inside thereof, the length of said arms (6) such that it reaches an opposite side edge (8) of the track, leaving adjacent said edge (8), a band (9) free, which can move a cursor; b) measuring, by making on said arms (6), the potential at the ends of each track segment between each pair of arms (6) adjacent; c) determining the number and magnitude of cuts made in each segment, by comparing the actual potential variation (10) track, obtained in b) with a desired law of variation of potential (11); d) making a plurality of micro-cuts (5) selectively controlled, according to step c).