Results 251 to 260 of about 295,958 (294)
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Electro-optic polymer electric field sensor
SPIE Proceedings, 2011Modern electronics are often shielded with metallic packaging to protect them from harmful electromagnetic radiation. In order to determine the effectiveness of the electronic shielding, there is a need to perform non-intrusive measurements of the electric field within the shielding.
D. Perry +8 more
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Vacuum Steered-Electron Electric-Field Sensor
Journal of Microelectromechanical Systems, 2014In a new type of microelectromechanical system (MEMS) electric-field sensor, a sheet of electrons is thermionically emitted by a hot cathode, flows through a vacuum, and is collected by a pair of anodes 2000 μm away. As the electrons move through the vacuum, they are steered by external electric fields, resulting in a differential current at the anodes.
Kirt R. Williams +4 more
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Measuring AC/DC hybrid electric field using an integrated optical electric field sensor
Electric Power Systems Research, 2020Abstract Measuring the AC and DC hybrid electric field is significant for the electromagnetic environment evaluation and for the design of AC/DC hybrid transmission lines. In this paper, a measuring method for both DC and AC electric field measurement by the integrated optical electric field sensor was proposed.
Hai Wang +6 more
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Magnetic and Electric Field Sensors
2015The main application for magnetic and electric field fiber optic sensors has been the electric power industry. The ability to dielectrically isolate equipment and personnel from high power provides an attractive feature in terms of safety and, ultimately, cost for fiber optic systems versus those using conventional technology.
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Wideband Photonics Electric Field Sensor
1999Abstract : SRICO developed a wideband photonics electric field sensing system capable of measuring signals up to 18 GHz. The electric field sensor is a passive integrated optic Mach-Zehnder interferometer device. The sensor is made from all-dielectric materials without any electrical connections.
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Transient calibration of electric field sensors
IEE Proceedings - Science, Measurement and Technology, 1999An electric field sensor calibration system that operates in the time-domain is described and its accuracy is assessed. The system makes use of a broadband, unterminated transient test cell that is simple to construct by comparison with matched TEM or GTEM cells.
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Coupled electric field sensors for DC target electric field detection
2008In various embodiments, an apparatus for detecting electric fields is disclosed that includes an array of non-linear elements configured into an oscillator with each coupled to one or more electric-field sensing plates. In various embodiments, an output of the array produces a frequency that varies as a function of an electric field sensed by the one ...
In V +5 more
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A Fiber Optic DC And Low Frequency Electric Field Sensor
Optical Fiber Sensors, 1991We demonstrate a novel fiber-optic interferometric dc and low frequency electric field sen sor based on the electrostrictive effect in a Ba:PZT transducer. The sensor exhibits a minimum detectable electric field of 0.01 V/m/spl radic/Hz at 1 Hz using 9 cm of fiber.
S T, Vohra, F, Bucholtz, A D, Kersey
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ARES, atmospheric relaxation and electric field sensor, the electric field experiment on NETLANDER
Planetary and Space Science, 2000Abstract The conditions which prevail in the atmospheres of most planets in the Solar System, in particular the telluric ones, are likely to give rise to their electrification. The resulting processes, which are of major importance for meteorology and climatology on Earth, may also be significant for atmospheric and surface processes on the other ...
Berthelier, Jean-Jacques +3 more
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