Effect of Approaching Contact Speed of Hand-Held Metal Piece on Characteristics of Discharge Current from Charged Human Body

Ruan, Fangming; Fujiwara, Osamu

doi:10.1109/ceem.2006.257917

Cited by 13 publications

(7 citation statements)

References 4 publications

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“…4, there are some relations between the approach speed and the 1 st peak current with large variance as shown in the previous studies [2] [3]. The peak current tends to be larger when the approach speed increases.…”

Section: B Relationship Between the Breakdown Electric Field Strengtmentioning

confidence: 71%

“…7(a) and (b) show the relationship between the breakdown electric field strength and the rising speed of 1 st peak at +3kV and +5kV, respectively. The rising speed [A/ns] is calculated from the 10% current i 10% [A], 90% current i 90% [A], and the rise time t 10%-90% [ns] by equation (2).…”

Section: B Relationship Between the Breakdown Electric Field Strengtmentioning

confidence: 99%

“…In previous study, there are some important researches about the influences of the approach speed [2] [3]. The discharge current of ESD from metal electrode handled by charged human body in the condition with approach speed range around 1cm/s to 50cm/s had been measured and considered in [2].…”

Section: Introductionmentioning

confidence: 99%

“…The discharge current of ESD from metal electrode handled by charged human body in the condition with approach speed range around 1cm/s to 50cm/s had been measured and considered in [2]. Moreover, the discharge voltage waveform and its radiation magnetic noise of ESD from charged metal electrode at +10kV in the condition with approach speed range 0.1cm/s to 10cm/s had been measured and considered in [3].…”

Section: Introductionmentioning

confidence: 99%

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Influence of approach speed of grounded electrode on ESD from charged metal

Yoshida

Masui

2012

2012 Asia-Pacific Symposium on Electromagnetic Compatibility

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In this study, we considered the influences of approach speed of the grounded electrode on characteristic of ESD from charged metal. The approach speed ranges from 0.04mm/s to 4mm/s. The applied voltage is +3kV and +5kV. The analyses are done from the viewpoint of the followings;(1) The gap length of discharge inception.(2) Relationship between the breakdown electric field strength and the shape of discharge current waveform.(3) The peak current and the rising speed of 1 st peak of discharge current.From experimental results, we found that the approach speed affected the distribution of the gap length of discharge inception. This change of the gap length led to change the shape of the discharge current waveform, the 1 st peak current and their rising speed.

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Section: B Relationship Between the Breakdown Electric Field Strengtmentioning

confidence: 71%

Section: B Relationship Between the Breakdown Electric Field Strengtmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of approach speed of grounded electrode on ESD from charged metal

Yoshida

Masui

2012

2012 Asia-Pacific Symposium on Electromagnetic Compatibility

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“…This is because the voltage induced in the electronic circuit by the magnetic flux lines crossing it depends on the rate of change in the spark current with respect to time. When a charged body approaches a grounded body, the discharge gap length tends to be smaller and the peak spark current tends to be greater than when the body is stationary [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Effect of change in the time of charging voltage on spark discharge from a metal disk

Tomita

2010

Electrical Engineering Japan

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SUMMARYElectrostatic discharge (ESD) is a source of electromagnetic disturbance. For an ESD immunity test, IEC 61000-4-2 is standardized. In the standard, the air discharge and contact discharge method are described for the application of ESD to equipment under test. Air discharge, which is most common in the field, is a more severe test than contact discharge. Air discharge is dependent on the humidity, the speed of approach to grounded material, the structure of the ESD generator, and so on. An ESD event while charged material approaches grounded material has a more significant effect on electronic equipment than an ESD event from stationary charged material with the same charge potential. This peculiar phenomenon is considered because the rise time becomes faster and the peak spark current becomes larger, but is not well understood for reasons such as the difficulty of reproducibility. To promote an understanding of the spark discharge that occurs while a charged material is approaching a grounded material, the effect of change in the time of the charging voltage on the spark discharge from a stationary metal disk was measured. The experiment showed that the spark voltage and peak spark current increased with a change in the time of the charging voltage, and that the amplitude of the spark current spectra also increased with a change in the time of the charging voltage. The experimental results are considered in terms of the sparking resistance formula, and can be explained qualitatively in terms of the increase of spark voltage.

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