Self-break water switches study under pulsed voltage in induction voltage adder

The water switches in induction voltage adder are designed. The electrode of output switch is plate to annular and the electrode of peaking switch is annular. Selfbreak characters of water switches under 300 ns pulsed voltage are studied. The spacing of switches is determined under different Marx charging voltage as well. The experimental result indicates that the switches are reliable with low jitters. The peaking switch cooperates well with the main switch, which can sharp the main pulse and reduce the amplitude of prepulse. The selfbreak experimental data of output switch accords well with Martin’s formula．