NDLI: Adaptive current sources and feedback applied to the cryogenic current comparator

Content Provider	IEEE Xplore Digital Library
Author	Wood, B.M. Schumacher, B.
Copyright Year	1963
Abstract	We present a novel current source for the cryogenic current comparator resistance bridge which is adaptable to many coil, resistance and filtering configurations. To achieve optimum performance of the system both current feedback from the SQUID and feedback from the voltage detector are examined and incorporated into the design. The properties of the new design are improved flux tracking, leakage, and flexibility without comprising the self checking capability and accuracy. The system has been used at the NRC over the resistance range of 1 /spl Omega/ to 1 M/spl Omega/.<>
Sponsorship	IEEE Instrumentation and Measurement Society Bureau international des poids et mesures IEEE International Bureau of Weights and Measures (BIPM) URSI NBS Agency Ind. Sci. & Technol., Min. Int. Trade & Ind. Sci. Council Japan International Union of Pure and Applied Physics (IUPAP) NIST NRCC National Conference of Standards Laboratories (NCSL) Allen Osborne Associates Andeen-Hagerling, Inc. Ballantine Lab. Inc. Clarke-Hess Communications Research Corp. Fluke Corporation Guildline Instruments Hewlett-Packard Co. Julie Res. Lab. Inc. Keithley Instruments, Inc. Measurements International Ltd. Canada QuadTech Inc. Quantum Design Inc. Rotek Instrum. Corp. Tegam Inc. Tektronix Inc
Starting Page	281
Ending Page	283
Page Count	3
File Size	336123
File Format	PDF
ISSN	00189456
Volume Number	44
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-04-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Feedback Cryogenics SQUIDs Coils Bridge circuits Bridges Filtering Superconducting device noise Resistors Measurement standards
Content Type	Text
Resource Type	Article
Subject	Instrumentation Electrical and Electronic Engineering

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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