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2020
The Rogowski coil is well suitable for sensing fast changing signals currents. It provides high bandwidth and galvanic isolation for power electronics applications. This chapter introduces Rogowski coil based current sensors for on-chip and off-chip sensing. The operation principle of a Rogowski coil and the resulting dependencies for the design of the
Tobias Funk, Bernhard Wicht
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The Rogowski coil is well suitable for sensing fast changing signals currents. It provides high bandwidth and galvanic isolation for power electronics applications. This chapter introduces Rogowski coil based current sensors for on-chip and off-chip sensing. The operation principle of a Rogowski coil and the resulting dependencies for the design of the
Tobias Funk, Bernhard Wicht
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IEEE Transactions on Magnetics, 1976
The design, fabrication and output characteristics of a thin film Permalloy magnetoresistive magnetic field sensor in a balanced bridge configuration are described. The bridge elements consist of two magnetostatically coupled Permalloy films (100 to 500 A°) separated by a thin film titanium spacer (100 to 1,000 A°).
C. Bajorek +3 more
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The design, fabrication and output characteristics of a thin film Permalloy magnetoresistive magnetic field sensor in a balanced bridge configuration are described. The bridge elements consist of two magnetostatically coupled Permalloy films (100 to 500 A°) separated by a thin film titanium spacer (100 to 1,000 A°).
C. Bajorek +3 more
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IEEE Transactions on Magnetics, 1979
A novel current threshold sensor of simple construction utilizes the precipitous reversal of magnetization within a cylindrical ferromagnetic shell endowed with a helical easy axis. When driven by a coaxially conducted alternating current of sufficient magnitude, the sense of the helical magnetization is periodically reversed.
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A novel current threshold sensor of simple construction utilizes the precipitous reversal of magnetization within a cylindrical ferromagnetic shell endowed with a helical easy axis. When driven by a coaxially conducted alternating current of sufficient magnitude, the sense of the helical magnetization is periodically reversed.
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Quality Measurement: The Indispensable Bridge between Theory and Reality (No Measurements? No Science! Joint Conference - 1996: IEEE Instrumentation and Measurement Technology Conference and IMEKO Technical Committee 7. Conference Proceedings, 2002
Three novel DC current sensors are described. Portable 40 A DC current clamps have resolution of 1 mA and high immunity to unclamped currents and external fields. AC/DC comparator with amorphous core may serve for precise measurement of DC currents with AC component up to 1 kHz. Magnetoresistive sensor field has limited accuracy but potential bandwidth
P. Ripka +3 more
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Three novel DC current sensors are described. Portable 40 A DC current clamps have resolution of 1 mA and high immunity to unclamped currents and external fields. AC/DC comparator with amorphous core may serve for precise measurement of DC currents with AC component up to 1 kHz. Magnetoresistive sensor field has limited accuracy but potential bandwidth
P. Ripka +3 more
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Optical Engineering, 2003
When a current passes through a metal-coated optical fiber, the Ohm's heat induces a phase change of the guided light within the fiber. This microampere current sensor is principally designed based on this thermal effect.A Michelson interferometer is used for detecting this phase change.
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When a current passes through a metal-coated optical fiber, the Ohm's heat induces a phase change of the guided light within the fiber. This microampere current sensor is principally designed based on this thermal effect.A Michelson interferometer is used for detecting this phase change.
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Autonomous wireless current sensor
2017 International Conference on Industrial Engineering, Applications and Manufacturing (ICIEAM), 2017This paper dwells upon the project of autonomous wireless current sensors for an automated information-measuring system of non-commercial energy metering. This sensors are designed in the concept of the Internet of Things. Small dimensions and energy autonomy of such sensors, unlike the conventional solutions, ensure their convenient application to ...
V. Goman, S. Fedoreev
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New Current Sensor for Quiescent Current Testing
2019 SoutheastCon, 2019Because of increasing leakage current and decreasing defective current, reducing testing time while keeping the required accuracy is one of the main I DQQ testing challenges of the new CMOS technology. In this paper, we propose a new sensor design to increase the discriminability of defective quiescent consumption from non-defective consumption based ...
Yasser A. Ahmed, Ibraheem khateeb
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Proportional BIC Sensor for Current Testing
Journal of Electronic Testing, 1992A new design of a BIC sensor for current testing static CMOS circuits is proposed. It is based on a lateral BJT device which is easy to incorporate in any standard CMOS process. The design diverts a fraction of the iDD current from the cell under test and a resistive component generates a voltage proportional to iDD Additional features are the ...
Josep Rius, J. Figueras
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Optical current sensor technology
1999The principles of optical and optical fiber current sensor technology have been known for some considerable time, and some of the earliest papers on optical fibre measurement techniques have considered this topic. The general advantages of the use of optical technology were discussed by Rogers [1] in an earlier volume, in which the essential principles
K. T. V. Grattan, Y. N. Ning
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Faraday current sensor with temperature monitoring
Applied Optics, 2005We present a novel optical current sensor based on the Faraday effect that incorporates a temperature monitoring system. The monitoring element is a temperature-dependent birefringent plate placed at the Faraday sensor head. Measurement of the plate retardation permits compensation for the temperature dependence of the Verdet constant.
César D, Perciante, José A, Ferrari
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