%0 Journal Article
%T Optimization of Measuring Current for Chopper Low Resistance Comparator
%A R. M. Radetic
%A D. R. Milivojevic
%A V. M. Despotovic
%J Measurement Science Review
%@ 1335-8871
%D 2010
%I 
%R 10.2478/v10048-010-0005-7
%X The article describes systematic error analysis for realized chopper low-resistance comparator. The objective was to determine optimal working conditions, considering limited resolution (about 10 nV) and resistance variation due to self-heating caused by increase of measuring current. The analysis and performances of realized chopper low-resistance comparator prototype instrument confirmed the initial assumptions of applied principles. The error for 1 A measuring current is 1.15 ppm in the measuring range of 10 m¦¸. It is possible to use the same principle for calculation of optimal measuring current and measurement error in other measurement ranges, as well.
%K Low-resistance measurement
%K chopper comparator
%K error analysis
%U http://versita.metapress.com/content/336n40j475p8v55n/?p=0fed901c71d24eccacbab7e094928001&pi=4