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The standard 8/20 μs impulse current waveform in IEC 61000-4-5. [Figure 3 – Waveform of short-circuit current (8/20 µs) at the output of the generator with no CDN connected] Front time: T f = 1,25 × Tr = 8 µs ± 20 % Duration: T d = 1,18 × Tw = 20 µs ± 20 % Undershoot: 0% to 30%. NOTE 1 The value 1,25 is the reciprocal of the difference between the 0,9 and 0,1 thresholds. NOTE 2 The value 1,18 is derived from empirical data.

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The standard 8/20 μs impulse current waveform in IEC 61000-4-5. [Figure 3 – Waveform of short-circuit current (8/20 µs) at the output of the generator with no CDN connected] Front time: T f = 1,25 × Tr = 8 µs ± 20 % Duration: T d = 1,18 × Tw = 20 µs ± 20 % Undershoot: 0% to 30%. NOTE 1 The value 1,25 is the reciprocal of the difference between the 0,9 and 0,1 thresholds. NOTE 2 The value 1,18 is derived from empirical data.
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niconiconi (niconiconi@cybre.space)'s status on Sunday, 07-Aug-2022 16:25:09 JST niconiconi
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Success, the output waveform of my 8/20 μs impulse generator prototype is now IEC 61000-4-5 compliant!
Peak current: 200 A
Front time: 7.05 μs
Duration: 21.24 μs #electronics

In conversation Sunday, 07-Aug-2022 16:25:09 JST from cybre.space permalink