Title :
A device for audio-frequency power measurement
Author :
Tong, G.-Q. ; Qian, Zhong-Tai ; Xu, Xiu-Ye ; Liu, L.-X.
Author_Institution :
Nat. Inst. of Stand. & Technol., Gaithersburg, MD, USA
fDate :
6/1/1990 12:00:00 AM
Abstract :
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)
Keywords :
electric current measurement; multimeters; power measurement; voltage measurement; 0.1 to 10 A; 15 to 600 V; 40 Hz to 10 kHz; AC resistance divider; audio-frequency power measurement; current; error; interference; microcomputer-based instrumentation; power factors; voltage; voltage follower; voltage multiplier; Current measurement; Frequency measurement; Instruments; Interference; Leakage current; Metrology; Power measurement; Power supplies; Reactive power; Voltage measurement;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
