DIFFERENTIAL MODE
DM signal transmission (to and from isolated wires)
DM disturbance : if two wires are close to each other
but far from a disturbance source ,
DM disturbance may be neglected .
DM measurement
I1+I2
COMMON MODE
CM signal transmission
(the return signals flow on a common conductive path)
CM disturbance : the disturbance is shared by
every conductor in the same direction
and the total return takes place in the ground
The ground is a dustbin for Icm
IP卡
狗仔卡
发表于 2006-5-21 20:25:00
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
显身卡