Improvements in the construction of telephone cables with frequencies carriers, willing to reduce the diaphony of reception or crosstalk between their pairs of wires (Machine-translation by Google Translate, not legally binding)

摘要

Improvements in the construction of telephone variables with carrier frequencies arranged to reduce crosstalk and reception or crosstalk between their wire pairs as long as the couplings between these parts of wires are magnetic couplings with C and G components of opposite and increasing signs mainly in absolute value with the frequency characterized in that the coupling between two pairs ab and n4/sup n4/sup is balanced or It compensates by connecting a capacitor between a last pair wire n sup 4/sup and another wire of the first pair (a) and a capacitor of approximately the same value and a series resistor between the same wire at ns sup (a) and the other wire of the last pair n sup 4/sup the other wire of the first pair being disconnected (b) logically allowing this arrangement cyclic permutations of n4/sup an4/sup and b it is certain that after 1 and 3 permutations a cable coupling is balanced with a real part and an imaginary part of opposite signs to those existing in the primitive course and after 2 permutations a cable coupling is compensated with a real part and another part imaginary of the same signs as in the primitive case an alternative arrangement consisting of logically connecting instead of a capacitor between the remaining two wires, the two capacitors having the same capacitance together as a capacitor and/or instead of a layer citor and of a resistors together the same conductance as one or the single resistor and also being the ratio of the capacitances equal to the ratio of the resistors. (Machine-translation by Google Translate, not legally binding)