公开(公告)号：AU3128793A

公开(公告)日：1993-09-13

申请号：AU3128793

申请日：1992-11-06

Applicant: ABB INC

Inventor： MOORMAN MICHAEL C

IPC: G01R21/133 ,  G01R15/04 ,  G01R19/10

Abstract: A method for measuring an unknown voltage (VIN) using a voltage divider network in such a way that uncertainties in the values of the resistances do not affect the measurement. The unknown voltage is divided into three fractional voltages, the fractional voltages are measured, and the unknown voltage is computed on the basis of the fractional voltages. The unknown voltage is divided with a voltage divider comprising first, second and third resistors, and a first voltage (Vo1) is measured across the first resistor, a second voltage (Vo2) is measured across the second resistor and a third voltage (Vo3) is measured across the third resistor. The unknown voltage VIN is computed in accordance with the equations disclosed in the specification.