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A toroidal current pulse transformer suitable for the measurement of large microsecond current pulses is described. An accuracy of 2 percent was obtained in reproducing approximately rectangular pulses over the 0.5- to 20-µs range for amplitudes up to 250 A. The transformer gave agreement to 5 percent with a Rogowski coil system for currents up to 70 000 A.
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Sarjeant et al. (1968) studied this question.
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