A pulsed-power circuit includes first, second, third and fourth compression stages. The first and second stages each include at least one pre-charged capacitor and at least one inductor in series, and at least one switch operative to pump a DSRD (drift-step- recovery diode). The pre-charged capacitor of the second stage is pre-charged in negative direction with respect to the pre-charged capacitor of the first stage. The third and fourth stages each include at least one DSRD. The switches of the first and second stage are operative to drive (pump and then pulse) the DSRDs of the third and fourth stages.
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