impulse
  • noun a sudden strong feeling
  • A unidirectional surge of current of very short duration. It quickly rises to a maximum, then drops to zero in a similar fashion. Such a surge may be produced, for instance, when switching equipment on or off. Also called impulse current, or pulse current.
  • A unidirectional surge of voltage of very short duration. It quickly rises to a maximum, then drops to zero in a similar fashion. Such a surge may be produced, for example, by a lightning stroke. Also called impulse voltage, or pulse voltage.
  • A pulse of very short duration, although both terms are often used synonymously.

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