A voltage-doubling method for measuring the voltage dependence of compressed gas capacitors

A commercially available transformer-ratio-arm capacitance bridge is used two different circuits to measure the voltage dependence of a capacitor by comparing it with a second compressed-gas capacitor, the voltage dependence of which need not be known. Measurements have been carried out at power frequency with an experimental setup for voltages up to 50 kV. A maximum uncertainty of six parts in 10
⁶
for the relative change of the capacitance was estimated.