A new construction principle of ac current shunts has been applied to a set of shunts for ac currents from 1 A to 20 A, 20 Hz - 10 kHz. The set will as complete cover current ranges from 20 mk to 1 A. The shunts are stable and do not show excessive ac-dc amplitude or phase differences and can thus be calibrated to work as ac current and resistance reference standards up to 10 kHz.
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