A New Method for Precision Calibration of Resistive Voltage Dividers up to 1000 V

Abstract

The paper presents a new method for direct voltage calibration of resistive voltage dividers at voltages up to 1000 V. A combination of a high-stability inductive voltage divider and a resistive voltage divider with stable ac-dc difference of voltage ratio are used to transfer the dc voltage ratio from a Josephson voltage standard to the divider under test. The method allows full automation and has a potential to achieve measurement uncertainties of the order of $0.1\ \mu\mathrm{V}/\mathrm{V}$.