Certificates of deposit, or CDs, are fixed income investments that generally pay a set rate of interest over a fixed time period.
When referenced to the local common or ground, a common-mode signal appears on both lines of a two-wire cable, in-phase and with equal amplitudes. Technically, a common-mode voltage is one-half the vector sum of the voltages from each conductor of a balanced circuit to local ground or common.
1 See below. 2  IL = constant, no matter what the terminal voltage is. 3  The plot of load current against terminal voltage is similar to the plot for an ideal voltage source, but voltage and current are interchanged. 4  Here is the plot.