EMC Question of the Week: June 24, 2019

Lightning bolt striking skyscraper

The minimum risetime of lightning-induced pulses (as specified in lightning immunity standards such as IEC 61000-4-5) is on the order of

  1. picoseconds
  2. nanoseconds
  3. microseconds
  4. milliseconds

Answer

The correct answer is "c". Lightning induced pulses specified in lightning immunity standards typically have risetimes on the order of microseconds and fall-times on the order of a millisecond.

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