Synchronization of multiple spark-gap switches by a transmission line transformer

Liu, Z.; Yan, K.; Pemen, A. J. M.; Winands, G. J. J.; Van Heesch, E. J. M.
November 2005
Review of Scientific Instruments;Nov2005, Vol. 76 Issue 11, p113507
Academic Journal
A transmission line transformer (TLT)-based multiple-switch circuit topology was recently proposed for pulsed-power generation. By means of a TLT, multiple spark-gap switches can be synchronized in a short time (ns). It is attractive to be used to design a long-lifetime repetitive large pulsed-power source (100 kW, 1 kHz) for various kinds of applications, such as corona plasma-induced gas cleaning. To gain insight into the synchronization principle and switching behavior of the individual switch, an equivalent circuit model was developed and an experimental setup with two spark-gap switches and a two-stage TLT has been constructed. We observed that in terms of switching currents, the two switches can be synchronized within 2–3 ns. The equivalent circuit model approximately fits the experimental results.


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