could be mounted on a pcb of the present invention having the configuration shown in fig3 e in this configuration the regulator may also be set to a voltage other than 3 3 volts if desired an ic device requiring that both the core and i o voltages to be either 3 3 volts or 5 0 volts could be inserted in the pcb designs shown in fig3 c and 3d in order to achieve optimum signal fidelity while implementing the pcbs and method of the present invention capacitors are employed to by pass each of the supply voltages to ground and to by pass the supply voltages to each other fig4 illustrates the signal transmission environment that occurs when utilizing two power supplies such as is done with the pcb of the present invention as shown driver 70 having a first voltage source and ground drives a transmission line 72 coupled to receiver 71 having a second voltage source and ground when a signal is transmitted along transmission line 72 from driver 70 it initially sees a first impedance z o which is typical of most transmission lines however when the signal goes from a first signal environment having v1 as the source voltage supply and a second signal environment having v2 as the receiver voltage supply the impedance of transmission line 72 jumps due to the discontinuity 73 of the current path for instance the line impedance may jump from z o 50 ohms to z o 250 ohms as a result signals are reflected back along the transmission line reducing.