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Maxwell bridge

About: Maxwell bridge is a research topic. Over the lifetime, 22 publications have been published within this topic receiving 169 citations.

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Proceedings ArticleDOI
02 Oct 2014
TL;DR: In this paper, the self-inductance measurement errors introduced by the time constants of the standard resistors and conductance used in the Maxwell bridge were analyzed and a common method to measure their time constants was proposed.
Abstract: This paper analyses the self-inductance measurement errors introduced by the time constants of the standard resistors and conductance used in Maxwell bridge, and proposes a common method to measure their time constants. After compensating, in the ranges from 1 mH to 100 H, the self-inductance measurement errors introduced by the time constants are less than 1 × 10-6 at 1 kHz.
Journal ArticleDOI
TL;DR: In this paper, the effect of induced currents in the ferromagnetic material is expressed as a first approximation in terms of the equivalent mutual inductance M. The resulting equations expressing the frequency dependence of L and Rac are in qualitative agreement with experiment.
Abstract: The Maxwell bridge has been found useful for measuring inductance L and a.c. resistance Rac at periods from 0.01 sec. to 200 sec. In some applications, the inductors had solid ferromagnetic cores and inductances of several hundred henries. The effect upon the bridge circuit of induced currents in the ferromagnetic material is expressed as a first approximation in terms of the equivalent mutual inductance M. The resulting equations expressing the frequency dependence of L and Rac are in qualitative agreement with experiment. Because of harmonic frequencies generated by magnetic hysteresis, the bridge cannot be completely balanced when measuring L and Rac of ferromagnetic‐cored inductors. Analysis of the precision of measurement indicates that the effect of the residual voltage at best balance is a reduction in bridge sensitivity. Factors determining the choice of bridge resistors and of balance indicator are discussed, and typical graphs of L and Rac as functions of frequency are presented.
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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20202
20151
20141
20132
20121
20101