Title :
A two terminal-pair coaxial AC bridge with auto source balance at NIM
Author :
Yan, Yang ; Lu, Huang ; Jianting Zhao ; Lu Huang
Author_Institution :
Nat. Inst. of Metrol., Beijing, China
Abstract :
A two terminal-pair coaxial AC bridge is constructed at NIM for high precision capacitance transfer, in which, an auto auxiliary source balance method is proposed and achieved. The error introduced by auto source balance circuit is at negligible level. The bridge can transfer capacitance from 1 pF to 100 pF with an uncertainty of 1 × 10-8 (k = 1) at low audio frequency.
Keywords :
bridge instruments; capacitance measurement; measurement uncertainty; NIM; auto auxiliary source balance method; auto source balance circuit; capacitance 1 pF to 100 pF; capacitance transfer; measurement uncertainty; terminal pair coaxial AC bridge; Admittance; Bridge circuits; Capacitance; Capacitors; Negative feedback; Standards; Uncertainty; AC bridge; Coaxial; feedback; source balance; two terminal-pair;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM), 2012 Conference on
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4673-0439-9
DOI :
10.1109/CPEM.2012.6251117
