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  1. This article appeared originally in Elektrotechnische Zeitschrift 42, p. 1331, 1921. At the request of several of our readers, and with the permission of the editors of ETZ, the paper has been translated and prepared for publication in this Journal by H. B. Brooks, Bureau of Standards.

1921 (1)

This article appeared originally in Elektrotechnische Zeitschrift 42, p. 1331, 1921. At the request of several of our readers, and with the permission of the editors of ETZ, the paper has been translated and prepared for publication in this Journal by H. B. Brooks, Bureau of Standards.

Elektrotechnische Zeitschrift (1)

This article appeared originally in Elektrotechnische Zeitschrift 42, p. 1331, 1921. At the request of several of our readers, and with the permission of the editors of ETZ, the paper has been translated and prepared for publication in this Journal by H. B. Brooks, Bureau of Standards.

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Figures (5)

Fig. 1
Fig. 1

Circuits of crossed-coil ohmmeter (diagrammatic).

Fig. 2
Fig. 2

Crossed-coil system with iron core.

Fig. 3
Fig. 3

Magnetic field relations of crossed-coil ohmmeter.

Fig. 4
Fig. 4

Crossed-coil system in magnetic field having parallel lines of force.

Fig. 5
Fig. 5

Forms of polepieces and cores used in crossed-coil ohmmeters.

Equations (5)

Equations on this page are rendered with MathJax. Learn more.

Z 2 = Z 1 2 + Z 2 2 2 Z 1 Z 2 cos ϕ
Cos α = Z 2 + Z 1 2 Z 2 2 2 Z 1 Z
tan α = sin ϕ Z 1 / Z 2 cos ϕ
tan α = sin ϕ k i 1 / i 2 cos ϕ
i 1 i 2 = e r 1 e r 2 + x = r 2 + x r 1