DocumentCode :
3227754
Title :
A self-closing water switch for load decoupling
Author :
MacGregor, S.J. ; Turnbull, S.M. ; Tuema, F.A.
Author_Institution :
Dept. of Electron. & Electr. Eng., Strathclyde Univ., Glasgow, UK
fYear :
1997
fDate :
35508
Abstract :
One of the most popular methods of generating high voltage impulses is to employ a Marx generator. In general, the output voltage pulse of a Marx generator can rapidly energise a pulsed power load in a few tens of ns, depending upon the load capacitance, and thereafter the pulse will decay with a time constant determined by the rate of charge removal from the generator. In some applications, the Marx generator may be required to apply a fairly constant voltage for only a few hundred of ns. This can be achieved by increasing the discharging time constant of the impulse generator to a few μs. However, the long wavetail of the impulse waveform in this situation may become damaging to the load after a few hundred ns, and in this case a crowbar circuit is usually incorporated into the system in order to isolate the load. This paper reports on work which was undertaken to develop a simple high voltage switch which can operate as a crowbar device to divert the energy contained in the Marx wavetail away from sensitive loads following the period of interest. The work describes the design and characterisation of a water filled switch developed for this purpose
Keywords :
pulsed power switches; Marx generator; Marx wavetail; charge removal rate; crowbar circuit; discharging time constant; high voltage impulses generation; load capacitance; load decoupling; output voltage pulse; pulsed power load energisation; self-closing water switch; time constant;
fLanguage :
English
Publisher :
iet
Conference_Titel :
Pulsed Power '97 (Digest No: 1997/075), IEE Colloquium on
Conference_Location :
London
Type :
conf
DOI :
10.1049/ic:19970409
Filename :
644468
Link To Document :
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