Recovery properties of vacuum spark gaps |
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Authors: | Sampayan SE Gurbaxani SH Buttram MT |
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Institution: | Dept. of Electr. & Comput. Eng., New Mexico Univ., Albuquerque, NM; |
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Abstract: | The authors investigated the recovery properties of a 90-kV, 15-kA multiple site, triggered vacuum spark gap. Triggering was accomplished with a multisite surface flashover plasma source with approximately 60 sites distributed over a 10 cm2 area. Gap dimensions were 1-cm spacing by 7.5-cm diameter. Recovery measurements were performed utilizing an inductively recharged double pulse circuit. Under a sinusoidal recharge, the time to a 40-kV recovery occurred in 330 μs for an average current fall rate approaching 1010 A/s. These vacuum spark gap switches may provide an alternative method of high-average-power switching |
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