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A device for audio-frequency power measurement

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4 Author(s)
Tong, G.-Q. ; Nat. Inst. of Stand. & Technol., Gaithersburg, MD, USA ; Qian, Z.-T. ; Xu, X.-Y. ; Liu, L.-X.

A device for the measurement of audio-frequency power, voltage and current is discussed. The full range of power factors are accommodated (cos φ=0 to 1). Voltage and current measuring ranges are 15-600 V and 0.1-10 A, respectively. When cos φ=1, the permissible error of the power measurement is from 50 to 150 p.p.m. over the frequency range of 40 Hz to 10 kHz (including the line power frequency)

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Instrumentation and Measurement, IEEE Transactions on  (Volume:39 ,  Issue: 3 )