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A log amplifier is an amplifier for which the output voltage ''V''out is ''K'' times the natural log of the input voltage ''V''in. This can be expressed as, : where ''V''ref is the normalization constant in volts and ''K'' is the scale factor. == Basic op-amp diode circuit == The relationship between the input voltage is given by: : where are the saturation current and the thermal voltage of the diode respectively. 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「Log amplifier」の詳細全文を読む スポンサード リンク
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