Common-mode signal: Difference between revisions

Revision as of 15:40, 19 January 2013

Revision as of 08:23, 23 January 2013

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Common-mode signals may be effectively eliminated by using [[differential amplifier]]s or receivers that respond only to voltage differences, ''e.g.,'' those between the wires that constitute a pair. Induced common-mode signals at low ([[Electric power transmission|power-line]]) frequencies can be greatly reduced by twisting parallel wires to create [[twisted wire pair]]s.

Example: lets take a three phase system having current Ia, Ib, Ic.

then common mode current is avg of the sum of the currents.

Icm = (Ia + Ib + Ic)/3;

== See also ==