Patent ID: 7667567

Claim:
A voltage divider for high resolution voltage determination comprising: a first pair of potentiometers each having a wiper that has substantially the same resolution and configured so that said wipers move together for any change in wiper position, wherein said first pair of potentiometers are configured for connecting a first end of each potentiometer to an input voltage E IN and configured so that the resistance between the wiper and said first end of one potentiometer of said first pair of potentiometers plus the resistance between the wiper and said first end of the other potentiometer of said first pair of potentiometers is substantially constant; N additional pair of potentiometers each potentiometer of a pair of said N additional pair of potentiometers having a wiper that has substantially the same resolution, so that said wipers move together for any change in wiper position, wherein a first end of each potentiometer of said additional pair of potentiometers is respectively connected to the wiper of a respective one of the potentiometers of said first pair of potentiometers or to a preceding one of said N pair of additional potentiometers and configured so that the resistance between the wiper and said first end of one potentiometer of said additional pair of potentiometers plus the resistance between the wiper and said first end of the other potentiometer of said additional pair of potentiometers is substantially constant, where N is an integer equal to or greater than zero; an additional potentiometer having an overall resistance value with first and second ends respectively connected to the wipers of said a last pair of said N additional pair of potentiometers, wherein the additional potentiometer has a wiper so as to define an output voltage E o .