Investigation on 10/350 Crowbar Pulse Current Circuit

Structure of main air discharging switch and a crowbar TVS （triggered vacuum switch） are designed and their triggering characteristics are investigated. The experimental results showed that for TVS the operating voltage range is from 1.3 kV to 120 kV, its maximum delay time is 400 ns and its jitter...

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Bibliographic Details
Published inPlasma science & technology Vol. 12; no. 4; pp. 494 - 498
Main Author 姚学玲 陈景亮 孙伟
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.08.2010
Subjects
Capacitors
Circuit design
Delay
Discharge
Electric circuits
Electric potential
Switches
Voltage
Waveforms
延迟时间
浪涌保护装置
电压范围
电流电路
真空触发开关
空气放电
脉冲波形
脉冲电流
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ISSN1009-0630
DOI10.1088/1009-0630/12/4/21

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Summary:Structure of main air discharging switch and a crowbar TVS （triggered vacuum switch） are designed and their triggering characteristics are investigated. The experimental results showed that for TVS the operating voltage range is from 1.3 kV to 120 kV, its maximum delay time is 400 ns and its jitter is 4-10 ns. Based on these results the crowbar 10/350μs （i.e., with a front time of 10μs and a duration of 350 μs） pulse current circuit and its controlling circuit are designed. With a 10μF stored capacitor C and a 6 μF waveform forming induction, a pulse current is generated with a maximum of 100 kA, front time of 10 ns and duration of 350μs. This pulse waveform can be used for testing SPD （surge protective devices）.
Bibliography:crowbar circuit, triggered vacuum switch, triggering characteristics, 10/350 μs pulse current waveform
TN7
TG146.21
34-1187/TL
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ISSN:1009-0630
DOI:10.1088/1009-0630/12/4/21