Abstract :
The paper discusses briefly the various known methods of measuring a.c. peak voltages in connection with h.v. testing, and mentions the errors and drawbacks associated with them. Results of a method of measurement, based on the principle of the diode peak voltmeter, are given whereby wave-shape and frequency errors are eliminated within wide limits. Comparisons are made with sphere-gap calibrations,1 and also with a voltmeter of the ¿rectified condenser-current¿ type.2 The method described, although primarily intended to apply directly to the h.v. connection, can be used in conjunction with a voltage transformer (or tertiary winding on the h.v. transformer).
