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A Proposed New Standard for High Voltage Measurements


Ramo, Simon (1936) A Proposed New Standard for High Voltage Measurements. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/7ZP0-G010.


It is suggested that the electrostatic force of attraction between spheres, rather than the sparking voltage, be adopted as the standard method of measuring high voltage. This proposal is based on the following investigations and results:

1. The sparking voltage of 50 centimeter standard testing spheres varies considerably even when corrections are made for changing air density. At larger spacings, the gap is influenced by the unavoidable presence of ground planes.

2. Accurate force measurements made over a period of several months gave a mean sparking voltage curve which differs by a few per cent from a newly recommended A.I.E.E. standard curve.

3. Only one correction factor, to account for the presence of extraneous bodies in the laboratory, need be applied to voltage computed from measured forces. It is shown that this factor is small and a technique is described for its precise computation.

4. Computations have been made for the effect of the spheres' shanks and the laboratory floor and walls on the attractive force between spheres.

The main results of this research have been published in a paper, "The Sparkless Sphere Gap Voltmeter II", Electrical Engineering, Vol. 55, No. 5, by R.W. Sorensen and the author. This paper has been scheduled for a discussion at the A.I.E.E. 1936 summer convention.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:Electrical Engineering
Degree Grantor:California Institute of Technology
Division:Engineering and Applied Science
Major Option:Electrical Engineering
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Sorensen, Royal Wasson
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 January 1936
Record Number:CaltechTHESIS:03232012-125331634
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:6864
Deposited By: Benjamin Perez
Deposited On:23 Mar 2012 23:38
Last Modified:03 Oct 2019 23:54

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