Patent ID: 8013467

Claim:
A method for increasing the power of a transmission signal from a device connected to a wired communications network without exceeding an allowable common mode current, the method comprising: connecting the device to a standard network having a generally fixed impedance; measuring the common mode current I CM (a); measuring the differential mode voltage V T (a) of the device in the presence of I CM (a); connecting the device to the wired communications network; applying a voltage V T (a) to the device to transmit a signal over the wired communications network; measuring the common mode current I CM (b) with the applied voltage V T (a); and if the absolute value of I CM (b) is less than the absolute value of I CM (a), then increasing the voltage from V T (a) to V T (B) to transmit a signal over the wired communications network, wherein the voltage increase is proportional to the difference between I CM (b) and I CM (a).