Abstract
An all solid-state high-voltage rectangular pulse generator is proposed in this paper. This generator broadly consists of a Marx generator, a pulse forming line (PFL) and a magnetic switch (MS). As the power supply, the Marx generator discharges to the PFL through an inductor. The inductor should cooperate with MS since it influences the discharging process directly and determines the volt-second product of the MS and the pre-pulse over the load. The MS saturates at exactly the moment the discharging process ends. Then PFL discharges to the matched resistor load through the saturated MS and a high voltage rectangular pulse is obtained over the load. The design of Marx generator and MS are introduced in this paper. Experiments under a single shot and repetitive frequency of 5 kHz were carried out. PSPICE simulations with a simplified model of MS were carried out to verify the experimental results. The experimental result matches well with the results of the simulation. A rectangular pulse with 12.5 kV voltage amplitude, 46-ns rise-time, 220 ns pulse-width was obtained over the 50 Ω resistor load.
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