We present the study and results obtained with a new compact repetitive Marx generator. The issue of this work was to provide an experimental high voltage repetitive generator to investigate on recurrent switching and fast power supply. To design this generator, we consider the voltage and the energy rise-time of the power supply, the total capacitance and the output voltage of the Marx. The power supply characteristics are 6 kJ/s with 40 kV and the Marx generator has 13 stages of 5,2 nF. The non-triggered gas switches work with a pressure of 3 atm. dry air/SF{sub}6 mixture and can operate at a fast repetitive rate (more than 2 kHz). The parameters of the system are in the range of 350 kV peak voltage, 15 ns rise time, 50 ns pulse width and 115 Hz repetitive rate.
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