Title :
Quasi-balance resistance bridge
Author :
Lei Lai ; Jian Feng ; Leibing Shi
Author_Institution :
Shanghai Inst. of Meas. & Testing Technol., Shanghai, China
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;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM 2014), 2014 Conference on
Conference_Location :
Rio de Janeiro
Print_ISBN :
978-1-4799-5205-2
DOI :
10.1109/CPEM.2014.6898464
