A power supply, charging a 5.93 μF capacitor. After the switch is closed, the high-voltage surge is discharge via a 10.9 μH inductor and 0.814 Ω series resistance to the load. Before and after the inductor, there's also a 20.2 Ω and 26.1 Ω resistors to control the surge duration.

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   niconiconi (niconiconi@cybre.space)'s status on Sunday, 07-Aug-2022 16:25:36 JST niconiconi

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   Just found the full design equations for the 8/20 µs surge generator in [1]. The author was nice enough even to have all component values precalculated for you. Looks easy if you can find a suitable HV switch. I initially worried about core saturation, the surge is 100 to 1000 amps, but the L is just 10 µH, a practical value for winding an air-core coil by hand.

   [1] Elementary and Ideal Equivalent Circuit Model of the 1,2/50 – 8/20 μs Combination Wave Generator, Carlo F. M. Carobbi https://ieeexplore.ieee.org/document/6714698 #electronics