帯電人体からの金属棒を介した気中放電による放電電流の広帯域測定

DOI Web Site Web Site BIBCODE 被引用文献18件 参考文献9件
  • 森 育子
    名古屋工業大学大学院情報工学専攻
  • 高 義礼
    名古屋工業大学大学院情報工学専攻
  • 藤原 修
    名古屋工業大学大学院情報工学専攻

書誌事項

タイトル別名
  • Wideband Measurement of Discharge Current Caused by Air Discharge through Hand-Held Metal Piece from Charged Human-Body
  • タイデン ジンタイ カラ ノ キンゾクボウ オ カイシタ キチュウ ホウデン ニ ヨル ホウデン デンリュウ ノ コウタイイキ ソクテイ

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抄録

In IEC 61000-4-2 for electrostatic discharge (ESD) immunity testing, an ESD-gun is used to simulate the ESD events from a charged human body. The gun of this kind injects into a device under test the discharge current through a lumped resistor from a charged lumped capacitor. In actual ESD events from charged human bodies, however, the charge distributed on the body surface is discharged through a spark from the fingertip, and its situation is essentially different from that of the ESD-gun. To understand the behavior of the above-mentioned discharge current, using a 6GHz digital oscilloscope, we previously measured the current through a hand-held metal piece from a charged human body, and proposed an equivalent circuit model for calculating the discharge current with a time invariant spark resistance. In this study, with respect to the approaching speed of the hand-held metal piece, we measured discharge currents through a metal piece from a human-body with a charge voltage raging from 200V to 1000V, and estimated the resultant voltage waveforms from the above-mentioned equivalent circuit model. Through these results, in conjunction with the metal piece speed, we demonstrated the dependence on the charge voltage of current peak, current rise time, time-varying spark resistance, spark length and breakdown field. We confirmed also that the spark resistance value at the current peak time enables one to calculate the discharge current, which supports the validity of the previously proposed circuit model.

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