【摘要】 应用计算机数据处理技术及快速高精度Ａ／Ｄ转换器，把淹没在超低噪声放大器的固有噪声中的超导临界弱电压提取出来。为高温超导材料Ｊｃ参数的瞬间测量提供强有力的手段。更多还原

【Abstract】 The paper presents a minute description of a technique for the amplification and measurement of weak singals and data processing. Using the computer data processing technique and a high speed and high precision A/D converter, the critical weak voltage of a superconductor can be extracted from the intrinsic noise of the amplifier. This technique provides a very useful means for the measurement of the Jc parameter of superconductors.更多还原