Calibration of high-voltage current-comparator-based capacitance and dissipation factor bridges using nonsynchronous digital sampling

A new calibration system for automated high-voltage current-comparator-based capacitance and dissipation factor bridges is presented. It does not require synchronization circuits between the digitizers and the generators. It is possible to simulate 1:1 capacitance ratio and dissipation factors from 1^.10^-6 with standard uncertainties of less than to 1^.10^-1 with standard uncertainties of less than 1^.10^-5.