Quasi-balance resistance bridge

Author

Lei Lai ; Jian Feng ; Leibing Shi

Author_Institution

Shanghai Inst. of Meas. & Testing Technol., Shanghai, China

fYear

2014

fDate

24-29 Aug. 2014

Firstpage

472

Lastpage

473

Abstract

A kind of quasi-balance resistance bridge based on electronic inductive voltage divider(EIVD) has been constructed. EIVD provides high accurate voltage ratios at wide frequency range from 20Hz to 10kHz. Wagner network with a follower makes voltage ratio unaffected by internal loading of ratio winding. Amplifiers are used to eliminate voltage drop on the connecting cable of resistors. The bridge can measure resistance from 1 Ω to 1M Ω with a optimal uncertainty of 2×10^-7 for resistance and 5 ns for time constant at 1kHz.

Keywords

amplifiers; balances; bridge circuits; cables (electric); electric potential; electric resistance measurement; measurement uncertainty; resistors; voltage dividers; windings; EIVD; Wagner network; amplifier; cable connection; electronic inductive voltage divider; frequency 20 Hz to 10 kHz; internal ratio winding. loading; measurement uncertainty; quasibalance resistance bridge; resistance 1 ohm to 1 Mohm; resistance measurement; resistor; time 5 ns; voltage drop elimination; Bridge circuits; Electrical resistance measurement; Joining processes; Resistance; Resistors; Voltage measurement; Windings; Electronic inductive voltage divider; bridge circuits; impedance measurement; quasi-balance; resistance measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements (CPEM 2014), 2014 Conference on

Conference_Location

Rio de Janeiro

ISSN

0589-1485

Print_ISBN

978-1-4799-5205-2

Type

conf

DOI

10.1109/CPEM.2014.6898464

Filename

6898464