Testing of a 120kV-Pulse Generator with Droop Compensation

A 149-stage Marx-type pulse generator is currently being tested. The generator delivers substantially rectangular pulses with a voltage amplitude of up to 120 kV at a rise time of approximately 100 ns into a resistive load. The generator has been designed for a peak current of 600 A. In order to generate rectangular pulses up to a pulse length of 100 μs with a moderate stage capacitance the droop of the output voltage can be compensated by subsequently activating additional stages.