Title: IMPULSE VOLTAGES AND IRRADIATED SPHERE-GAPS
Abstract: A PAPER by J. M. Meek before the Institution of Electrical Engineers reports the results of experiments made to determine the influence of irradiation on the measurement of impulse voltages with sphere gaps. The impulse breakdown of short gaps between spheres is greatly affected by irradiation and it has been shown already that appreciable errors may be incurred if irradiation is not used with spheres of 6.25 cm. diameter in the measurement of voltages up to 100 kV. peak. Further measurements have now been made up to 400 kV. peak with 1/5 and 1/50 impulse voltage waves of positive and negative polarities, for 6-25 cm. and 25 cm. diameter spheres.