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Electrostatically induced voltage generated in a metal box when a charged body moves: Relation between the ratio of conducting parts in the box and the induced voltage
Author(s) -
Ichikawa Norimitsu
Publication year - 2006
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.20366
Subject(s) - voltage , electrical engineering , metal , materials science , electrical conductor , optoelectronics , engineering , metallurgy
Movement of electrostatically charged objects, such as a human body or a tool wagon, near electronic equipment placed in a partly opened metal box (grounded) can lead to the appearance of voltage induced in conductive parts of the equipment. The induced voltage can cause malfunctions and even breakdowns of the equipment. In this study, one measures the induced voltage between two metal sheets having different areas placed in the metal box. Measurement of the induced voltage is carried out using a sphere gap and an electromagnetic wave sensor in the metal box. Experimental results indicate that the induced voltage between two metal sheets increases up to 1.6 times when the area of metal sheets placed in the metal box increases 10 times (from 10 cm 2 to 100 cm 2 ). However, the induced voltage depends only slightly on the area of the grounded metal sheet placed in the metal box. Results obtained in this study can be used as basic concepts applied to the designing of printed circuit boards for the purpose of reducing the susceptibility of electronic equipment located in metal boxes to malfunctions and failures caused by electrostatically induced voltage. © 2006 Wiley Periodicals, Inc. Electr Eng Jpn, 156(2): 52–60, 2006; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/eej.20366