Problem on External Noise disturbing Noise-Measurement of DC Reference Voltage

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  • 基準電圧雑音の計測に対する測定環境評価の問題
  • キジュン デンアツ ザツオン ノ ケイソク ニ タイスル ソクテイ カンキョウ

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Abstract

We developed a method of constituting DC reference voltage circuit which is composed of zener diode. For evaluation of the noise voltage included in the circuit, two problems have to be discussed. One is on measurement of infinitesimal voltage less than 100nV and the other is on the external noise disturbing its measurement. The former is related to the constitution of the differential amplifier utilized for amplification of its small signal. The latter is on power source noise inducing injurious voltage into the measurement circuit. This paper treats these two and gives some important suggestions for achieving accurate measurement of small signal.

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