回路素子測定器における測定用交流電圧の出力レベル制御方法

Method for controlling output level of ac voltage for measurement in circuit element measuring instrument

Abstract

PURPOSE: To make constant voltage or constant current an AC voltage for measurement applied to a circuit element or an AC current for measurement flowing through the element when measuring various kinds of characteristics of the circuit element. CONSTITUTION: The maximum value of a voltage for measurement or a current for measurement is detected. Then, the maximum value is compared with a specific constant voltage value or a constant current value which is set to the maximum value in advance. When constant voltage value (low current value)-α<= maximum detection value <= constant voltage value +α (α: error tolerance) is satisfied, an output level Vo of an AC voltage outputted from a signal source is maintained. When a detection voltage value (detection current value 0 is outside the range in the above expression, an AC voltage at a level calculated by the expression of current output level Vo of signal source ×constant voltage value (constant current value)/current detection voltage value (detection current value) is outputted from the signal source.
(57)【要約】 【目的】 回路素子の諸特性を測定する際、同素子に加 わる測定用交流電圧又は同素子に流れる測定用交流電流 を短時間で定電圧化、もしくは定電流化する方法。 【構成】 測定用電圧又は測定用電流の最大値を検出 し、次にその最大値をあらかじめ最大値で設定した所定 の定電圧値もしくは定電流値とを比較して、 定電圧値(低電流値)−α≦検出最大値≦定電圧値+α α;許容誤差 を満足してれば信号源から発する交流電圧の出力レベル Voを維持する。検出電圧値(検出電流値)が上式の範 囲外にある場合は、 信号源の現在出力レベルVo×定電圧値(定電流値)/ 現在の検出電圧値(検出電流値) の式にて算出したレベルの交流電圧を信号源から出力さ せる。

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