SNS programmable voltage standard
SNS programmable voltage standard
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SNS可编程电压标准
DOI：
10.1109/77.621740
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发表时间：
1997
影响因子：
1.8
通讯作者：
T. Harvey
中科院分区：
文献类型：
--
作者：
C. Hamilton;S. Benz;C. Burroughs;T. Harvey
超导-普通-超导 (SNS) 结已用于 1V 快速可编程电压标准的设计和制造。超导电路是一个由 32 768 个 Nb-PdAu-Nb 结点组成的串联阵列，其抽头将阵列划分为较小阵列段的二进制序列，最小段大小为 128 个结点。 16GHz 驱动频率由结点的特征频率设定。计算机控制的 8 通道偏置系统控制每个段中的电流，并允许快速选择 513 个离散电压电平中的任何一个。该系统专为快速直流测量和精确交流波形的合成而设计。
Superconductor-Normal-Superconductor (SNS) junctions have been used in the design and fabrication of a 1-V rapidly programmable voltage standard. The superconducting circuit is a series array of 32 768 Nb-PdAu-Nb junctions with taps that divide the array into a binary sequence of smaller array segments with a minimum segment size of 128 junctions. The 16-GHz drive frequency is set by the characteristic frequency of the junctions. A computer-controlled 8-channel bias system controls the current in each segment and allows the rapid selection of any one of 513 discrete voltage levels. The system is designed for fast dc measurements and the synthesis of precise ac waveforms.