U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications by: Dean G. Jarrett (Fed)

Search Title, Abstract, Conference, Citation, Keyword or Author
Displaying 126 - 150 of 178

Key Comparisons for Dummies: Lessons Learned

June 1, 2002
Author(s)
Dean G. Jarrett
This paper will discuss some of the challenges encountered during a recent key comparison. From these experiences, general lessons will be drawn that should prove useful both for the consultative committees and for future pilot laboratories as they

Statistical Uncertainty Analysis of CCEM-K2 Comparisions of Resistance Standards

June 1, 2002
Author(s)
Nien F. Zhang, N Sedransk, Dean G. Jarrett
Details of the statistical uncertainty analysis applied to key comparison CCEM-K2 are reported. Formulas were derived to determine the uncertainty of the combined difference between the measurements of multiple artifacts by an NMI and the corresponding

Statistical Uncertainty Analysis of CCEM-K2 Comparisons of Resistance Standards

June 1, 2002
Author(s)
Nien F. Zhang, N Sedransk, Dean G. Jarrett
Details of the statistical uncertainty analysis applied to key comparison CCEM-K2 are reported. Formulas were derived to determine the uncertainty of the combined difference between the measurements of multiple artifacts by an NMI and the corresponding

Analysis of a Dual-Balance HIgh Resistance Bridge at 10 T{O}

April 1, 2001
Author(s)
Dean G. Jarrett
The NIST guarded active-arm bridge, using a third dc source and a second detector to balance the guard network, is described. Improvements to the NIST active-arm bridge and the design and construction of improved high resistance standards have facilitated

A Dual-Balance High-Resistance Bridge in the Range of 1 T{O} to 100 T{O}

May 1, 2000
Author(s)
Dean G. Jarrett
The NIST dual-balance guarded active-arm bridge, using a third dc source and a second detector to balance the guard network, is described. Improvements to the NIST guarded active-arm bridge and the design and construction of improved high resistance

A Comparison of 1 T O} and 10 T O} High-Resistance Standards Between NIST and Sandia

August 1, 1999
Author(s)
Dean G. Jarrett, Ronald F. Dziuba, Marlin E. Kraft
NIST-built 10 T ω and commercial 1 T ω standard resistors were hand carried between NIST and Sandia for a high resistance comparison. The comparison tested the ruggedness of the new NIST-built standard resistors, provided a check of the scaling between the

Evaluation of Guarded High-Resistance Hamon Transfer Standards

April 1, 1999
Author(s)
Dean G. Jarrett
An improved design for a guarded transfer standard in the resistance range 1 M ω to 100 G ω is described. Existing transfer standards and their limitations are reviewed along with a description of guard circuit theory. Measurements made to evaluate the

Fabrication of High-Value Standard Resistors

April 1, 1999
Author(s)
Ronald F. Dziuba, Dean G. Jarrett, L. L. Scott, Andrew J. Secula
The National Institute of Standards and Technology (NIST) has fabricated stable, transportable 10 MΩ} and 1 GΩ} standard resistors for use in an international comparison of high resistances. This fabrication process is being applied to the construction of