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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Complex gain ： ウィキペディア英語版 Complex gain In electronics, Complex gain is the effect circuitry has on the amplitude and phase of a sine wave signal. The term ''complex'' is used because mathematically this effect can be expressed as a complex number. ==Example== Suppose a circuit has an input voltage described by the equation :$V\_(t)\; =\; 1V\; \backslash cdot\; \backslash sin\; (\backslash omega\; \backslash cdot\; t)$ where ω equals 2π×100Hz, i.e., the input signal is a 100Hz sine wave with an amplitude of 1 Volt. If the circuit is such that for this frequency it doubles the signal's amplitude and causes a 90 degrees forward phase shift, then its output signal can be described by :$V\_(t)\; =\; 2V\; \backslash cdot\; \backslash cos\; (\backslash omega\; \backslash cdot\; t)$ In complex notation, these signals can be described as, for this frequency, ''j''·1V and 2V, respectively. The complex gain ''G'' of this circuit is then computed by dividing output by input: :$G\; =\; \backslash frac\; =\; -2j.$ This (unitless) complex number incorporates both the magnitude of the change in amplitude (as the absolute value) and the phase change (as the argument). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Complex gain」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.