voltage divider rule VDR
What is the voltage divider rule? The voltage divider rule is a simple way of determining the output voltage across one of two impedances connected in series. It is a useful tool for circuit analysis and design. How is it used? The voltage divider rule can be used with resistive, inductive, or capacitive circuit elements. It can also be used with AC or DC input sources. The equation for calculating the output voltage is different, however, depending on the type of circuit element. Following are the three general cases of two like elements connected in series: Resistive divider: The formula for determining the DC or AC output voltage of a resistive divider is: Vout = Vin*R2/(R1+R2) Example: In the following circuit, the output voltage would be: Vout = 9V*10K/(10K + 5K) = 6V Inductive divider: Inductive dividers can be used with AC input signals. A DC input voltage would split according to the relative resistances of the two inductors by u...