Repetitive High-Voltage Pulse Generator Based on Thermally Depolarized Ferroelectrics

We present a repetitive, non-destructive system for generating high-voltage pulses through fast, controlled thermal depolarization of pre-polarized ferroelectric ceramics.This system represents a significant advance in compact pulsed-power devices, where energy is stored in pre-polarized ferroelectrics.In our device, the ferroelectric pre-polarized ceramic is heated above the Curie temperature in a short, well-defined time interval, releasing the stored electrostatic energy bound by spontaneous polarization as a high-voltage pulse with rise times in the 10-20 ns range, peak amplitudes between 50 and 500 kV, and repetition rates from 0.1 to 10 Hz without material degradation.The system incorporates dedicated subsystems for rapid heating, liquid dielectric insulation, reverse-current blocking, adjustable spark-gap switching, nanosecond-scale diagnostics, and active cooling.Applications include high-power microwave generation, compact X-ray flash radiography, high-power laser pumping, and various medical and industrial sectors requiring compact, reusable pulsed-power sources.