单词 | phasemeter |
释义 | phasemetern. An instrument which measures a phase difference between two oscillations or waveforms, esp. that between an alternating current and the corresponding voltage (hence giving the power factor). ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > voltage > [noun] > phase > instrument measuring phase phasemeter1894 the world > matter > physics > electromagnetic radiation > electricity > electric current > alternating current > [noun] > phase of > instrument measuring phase difference phasemeter1894 1894 M. von Dolivo-Dobrowolsky in Electrician 21 Sept. 610/1 The phasemeter here described is essentially an ampere meter measuring the idle current. 1903 G. D. A. Parr Electr. Engin. Measuring Instruments vii. 194 The phasemeter now under consideration, made by the Electrical Co., Ltd., of London, is an instrument for measuring directly the value of the wattless current in an inductive alternating-current circuit. 1974 Physics Bull. Oct. 477/1 The circuitry of the phasemeter has been designed to reduce the effects of errors introduced by crossover distortion and noise in the input signal, which are the most common sources of inaccuracy. 2003 Radio (Nexis) 1 Oct. 10 The different models provide a variety of basic functions: Phasemeter..Audio vector oscilloscope [etc.]. This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022). < n.1894 |
随便看 |
|
英语词典包含1132095条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。