DocumentCode :
2748551
Title :
250mA high-precision dc-current source for joule balance at NIM
Author :
Han, B. ; Li, C. ; Wang, N. ; Li, S. ; He, Q. ; Li, Z.
fYear :
2012
fDate :
1-6 July 2012
Firstpage :
348
Lastpage :
349
Abstract :
For application in the magnetic field of joule balance at NIM, a dc-current source with 250mA for magnetic system, based on series compensation type, has been developed. Through designing the extraordinary sampling resistor, selecting stable voltage reference and operational amplifier with outstanding properties, the stability of this customized constant current source approached to 4.5×10-6/30min, which at present was satisfied with the requirement of magnetic system.
Keywords :
balances; magnetic field measurement; operational amplifiers; resistors; NIM; constant current source; current 250 mA; high-precision DC-current source; joule balance magnetic field; operational amplifier; sampling resistor; series compensation type; stable voltage reference; Circuit stability; Operational amplifiers; Power system stability; Resistors; Stability criteria; Superconducting magnets; Thermal stability; Current source; Plank´s constant measurement; joule balance; magnetic system; stability;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Precision Electromagnetic Measurements (CPEM), 2012 Conference on
Conference_Location :
Washington, DC
ISSN :
0589-1485
Print_ISBN :
978-1-4673-0439-9
Type :
conf
DOI :
10.1109/CPEM.2012.6250945
Filename :
6250945
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=2748551
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