This review presents the results of investigations, design work, and tests of generators of subnanosecond pulses with amplitudes exceeding 100 kV. These generators were developed at the Institute of Electrophysics on the basis of compact nanosecond repetitive-pulse RADAN generators. Relatively long pulses (2-5 ns) were transformed into shorter ones (down to 150-200 ps) with the use of systems based on high-pressure sharpening and cutting gas spark gaps. This ensured stable operating modes for the generators at repetition frequencies of up to 100 Hz. Such spark gaps were utilized in systems of additional energy compression for enhancing the peak power of output subnanosecond pulses, as well as in devices producing high-power bipolar pulses. Some applications of short (<1 ns) powerful voltage pulses are considered.
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