Any common-mode current (ICM) that may be present flows from the voltmeter input lo to instrument chassis common, through earth ground to voltage source ground.
可能出现的共模电流(ICM)从电压表的输入低端流到仪器的机箱公共端，经过大地再流到电压源的地。
2
Equipment designers can minimize the effects of these mismatches or "unbalances" through judicious choices of input and output stage circuit topologies and common-mode impedances.
设备设计师能通过审慎地选择输入输出级电路的拓扑和共模阻抗来最小化失配或“非平衡”的效应。
3
Most line drivers with low differential output impedance will also have inherently low common-mode output impedances, so the low impedance arms of the bridge are almost always at the driver.