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本文略述通常测量电子管等效噪声电阻的二种方法。讨论直接影响测量准确性的几个主要因素。提出用噪声二极管测等效噪声电阻时对测试设备的鉴定方法。测试设备的工作频率为123千赫;频带率宽为0.74千赫;放大器增益为140分贝。
This article outlines two commonly used methods for measuring tube equivalent noise resistance. Discuss several major factors that directly affect the accuracy of the measurement. This paper proposes a method for the identification of test equipment when measuring the equivalent noise resistance with a noise diode. The operating frequency of the test equipment is 123 kHz; the bandwidth is 0.74 kHz wide; and the gain of the amplifier is 140 dB.