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COMPARISON OF HIGH VALUE RESISTANCE STANDARDS USING THE MODIFIED WHEATSTONE BRIDGE AND PICOAMMETER

Ivan Lenicek, Damir Ilic, Luka Ferkovic

Abstract

In this paper is presented the method for comparison of high value resistance standards by using the modified Wheatstone bridge and picoammeter as current detector, instead of low-impedance current-sensing transimpedance amplifier. Basically, the resistance ratio <i>r</i> can be measured on nominal levels 1:1, 10:1 or 100:1, ensuring the traceability chain from the reference standards of 10 M&Omega; and 1 G&Omega; for the range of interest 10 M&Omega; to 100 G&Omega;.

Keywords
calibration, high resistance standards, zero-current measurement, modified Wheatstone bridge
Download
IMEKO-WC-2012-TC4-O8.pdf
DOI
-
IMEKO TC
TC4 - Measurement of Electrical Quantities

Event details

Event
XX IMEKO World Congress
Place
Busan, REPUBLIC of KOREA
Time
9 September 2012 - 12 September 2012
Website
http://imeko2012.kriss.re.kr

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