Triggered vacuum gaps

Lafferty, J. M.

doi:10.1109/proc.1966.4570

Cited by 163 publications

(18 citation statements)

References 21 publications

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“…When the initial plasma diffuses to the main gap, it will be speeded by the electric field force in the main gap and lead to the TVS's breakdown in the end [7]. Due to the influence of the pulse transformer, the energy stored in the capacitor can not be provided completely to the initial plasma.…”

Section: Resultsmentioning

confidence: 99%

Influence of Controller Parameters on Time Delay in Triggered Vacuum Switch

Wang

Deng

2008

2008 International Conference on High Voltage Engineering and Application

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Three types of pulse transformers with different parameters were described for investigating the delay characteristics of the triggered vacuum switch (TVS) . A design circuit for controlling the TVS is proposed herein. The experimental data show that the pulse transformer with low leakage inductance is of good performance in triggering the TVS. By means of changing the charge voltage and the capacitance of the controller, the delay and jitter times decrease with increasing the charge voltage and capacitance in a normal range. An optimal parameter was selected so that the delay and jitter times decrease to 4.6 µs and 1.4 µs, respectively.

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Section: Resultsmentioning

confidence: 99%

Influence of Controller Parameters on Time Delay in Triggered Vacuum Switch

Wang

Deng

2008

2008 International Conference on High Voltage Engineering and Application

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“…This is because of the high dielectric recovery rate of the metal vapor arc. Lafferty (1966), in early studies, has shown recovery rates to be as fast as 30 kV/~s. In his device, the gap spacing was 1.2 mm.…”

Section: Recovery Studiesmentioning

confidence: 99%

“…Lafferty (1966) has shown recovery rates in simi1ar devices to be as fast as 30 kV/~s. This rapid recovery in a vacuum switch resu1ts from the rapid dispersion of electrode material vapors created in the gap following extinction of the current pulse.…”

Section: Low Pressure and Vacuum Spark Gaps Introductionmentioning

confidence: 99%

Repetitive Spark Gap Switches

Buttram

Sampayan

1990

Gas Discharge Closing Switches

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“…The currents heat the metal peaks, which will be melted and evaporate lots of metal vapor. It is reported that, the relationship between the emission current density and electric field keeps to (2) and (3) where is the emission current density, is the electric field, and is the escape work [5]. According to (2) and (3), the emission current density has reached A/mm .…”

Section: A Trigger Reliabilitymentioning

confidence: 99%

“…Lafferty and his team of the GE company in America had done a great lot of researches on the TVS, especially the TVS coated with hydride as trigger material [2]. In seventy years, some scholars of India did experiments on the TVS employing a dielectric coated with a semiconductor layer as trigger material [3].…”

Section: Introductionmentioning

confidence: 99%

Operational Characteristics of a Field-Breakdown Triggered Vacuum Switch

et al. 2009

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Triggered vacuum switch (TVS) is one of the important switch apparatuses in the fields of high-pulsed power system. Its working lifetime is due to trigger failure of the trigger pin, so the parameters of trigger source become the key of lifetime dilatation. A sample of field-breakdown TVS coated with nothing is fabricated, which has much longer lifetime than the TVS coated with trigger materials, but more trouble in the trigger process. A trigger system and a LC test circuit are designed to find the operational characteristics of the TVS sample. The trigger system generates a negative pulse with peak value of 30 kV/500 A, the system delay and its scatter is controlled in 70-100 s, and the triggered rate of success reaches 96%. Test results show that the sample has a wide working voltage range of 0.3-40 kV. The delay of its switching-on is stable in hundreds of nanoseconds, which will be reduced with the increase of main gap voltage. The arcing is steady in the conducting process, keeping arc voltage at 20 V approximately. The arc current drops to zero as current zero is approached, leading to a voltage remained in the capacitance.

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Triggered vacuum gaps

Cited by 163 publications

References 21 publications

Influence of Controller Parameters on Time Delay in Triggered Vacuum Switch

Influence of Controller Parameters on Time Delay in Triggered Vacuum Switch

Repetitive Spark Gap Switches

Operational Characteristics of a Field-Breakdown Triggered Vacuum Switch

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