User:Gutten på Hemsen/sandbox/Impedance balancing

In electrical engineering, impedance balancing is the practice of arranging the impedances of the conductors in a two conductor circuit to be equal. Doing so guarantees that noise picked up by the conductors appear as a common-mode signal. which can be rejected by a differential device (such as a differential amplifier or transformer). Impedance balancing is the basis from which balanced lines, interfaces, and more generally, balanced circuits are developed.

Balance
Impedance balancing aims to create a balance between the conductors in a circuit so that they’re electrically identical. The circuit is said to be impedance balanced (or simply balanced) when this is achieved.