Contactless current measurements using a needle sensor

Hartmann, Claus; Mertin, W.; Bacher, G.

doi:10.1016/j.ultramic.2005.06.041

Cited by 2 publications

(1 citation statement)

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“…A large scanning height was selected in order to eliminate the influence of voltage caused by the potential difference between the probe tip and the conducting line. The detected current was 100 µA [Hartmann 2005], with about 10µm spatial resolution.…”

Section: Fig 28mentioning

confidence: 99%

Electric current sensors: a review

Ripka

2010

Meas. Sci. Technol.

221

125

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The paper makes a brief overview of traditional methods of measuremet of electric current and shows in more detail relatively new types of current sensors. These include Hall sensors with field concentrators, AMR current sensors, magnetooptical and superconducting current sensors. The influence of the magnetic core properties on the error of the current transformer shows why nanocrystalline materials are so advantageous for this application. Built-in CMOS current sensor are important tools for monitoring of the health of integrated circuits. Of special industrial value are current clamps which can be installed without breaking the measured conductor. Parameters of current sensors are also discussed, including geometrical selectivity. This parameter specific for current sensors means the ability to suppress the influence of currents external to the sensor (including the position of return conductor) and also suppress the influence on the position of the measured conductor with respect to the current.

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Section: Fig 28mentioning

confidence: 99%