File:NISTvoltChip.jpg

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This file is fae Wikimedia Commons n micht be uised bi ither waurks. The descreeption oan its file descreeption page thaur is shawn ablo.

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Descreeption
English: One-volt en:voltage standard developed by en:NIST (formerly en:National Bureau of Standards (NBS) until 1988) based on an array of 3020 superconducting en:Josephson junctions, operating at liquid-helium temperatures. Microwave energy fed into the finguide structure on the left generates a voltage across the 4 chains of junctions on the right.
Date apparently 1985-1988
Soorce NIST paper A Practical Josephson Voltage Standard at One Volt, Figure 1
Author NBS

Licensin

Public domain
This image is in the public domain in the United States because it is a work of the United States Federal Government, specifically an employee of the National Institute of Standards and Technology, under the terms of Title 17, Chapter 1, Section 105 of the US Code.

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Voltage standard based on Josephson junctions

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voltage

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Date/TimeThummnailDimensionsUiserComment
current11:22, 31 Mairch 2017Thumbnail fer version aes o 11:22, 31 Mairch 20171,421 × 878 (207 KB)Materialscientistcontrast
06:20, 16 Julie 2009Thumbnail fer version aes o 06:20, 16 Julie 20091,421 × 878 (86 KB)RNLionHigher-resolution view from same NIST source paper to show greater detail.
13:10, 11 September 2005Thumbnail fer version aes o 13:10, 11 September 2005472 × 293 (123 KB)ArnoldReinholdSuperconduction chip used by w:NIST to define the w:volt. The chip contains an array of 3020 w:Josephson junctions and operates at liquid w:Helium temperatures. Microwave energy is fed to the junctions through the finguide on the left. Fr

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