A Generating Voltmeter with Calculable Voltage-Current Ratio for Precise High-Voltage Measurements

A new design of a generating voltmeter with a rotating measuring electrode system is described. It is based on an arrangement of eccentric circular cylinder electrodes. Hence an essential advantage of the voltmeter is a calculable voltage-current ratio provided the rotation frequency is known. Moreover the electrode arrangement is self-shielding. For these reasons, in principle, no calibration is necessary. The properties of the voltmeter are discussed theoretically. Two practical laboratory devices are presented. Prospects for future development are discussed.