Trigger system of two-electrode gas spark switch

The two-electrode switch has no trigger electrode and longer life than the three-electrode switch. In order to trigger the switch, the trigger voltage’s peak-to-peak value should be very high and the rise time of trigger pulse should be short. This paper introduces a kind of trigger system which uses a 8-step Marx generator. The trigger system includes the Marx generator, power switch, insulating transformer, L-C charging circuit, sampling control circuit, optical fiber control circuit and triggering circuit. In order to reduce the inductance of Marx generator discharge circuit, the Marx generator uses low-inductance capacitors and coaxial structure. The trigger voltage is 120 kV, and the rise time is less than 30 ns. The simulation mode of the Marx generator discharge circuit is establi