Results 291 to 300 of about 299,068 (336)

Electric field sensors in electromagnetic sounding

IEEE Transactions on Geoscience and Remote Sensing, 1989
A staked and an insulated dipole antenna were used to monitor transmissions from a distant very-low-frequency transmitter. The field strength recorded from the staked antenna was found to be much larger than that recorded from the insulated antenna. It is shown that this can be adequately described as magnetic field induction.
null Wu Xiao Wu, D.V. Thiel
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DUAL SPHERICAL ELECTRIC FIELD VOLTAGE SENSOR

ВЕСТНИК ВОРОНЕЖСКОГО ГОСУДАРСТВЕННОГО ТЕХНИЧЕСКОГО УНИВЕРСИТЕТА, 2021
Мы живем в мире высоких энергетических технологий, способных передавать электрическую энергию на большие расстояния. Эту энергию невозможно сосредоточить только внутри передающих энергетических систем. Она выплескивается наружу в виде электрических полей.
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Piezoelectric fiber optic electric field sensor

Ferroelectrics Letters Section, 1988
Abstract Two types of fiber optic interferometric electric sensors have been demonstrated where the fibers have been sensitized to electric fields in a novel way. In the first case, the fibers were embedded in a piezoelectric barium titanium silicate (fresnoite) glass-ceramic, and in the second case, in a PZT-polymer composite matrix.
C. M. Lawson, A. Halliyal, A. S. Bhalla, S. J. Janz, L. E. Cross   +4 more
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Fiber Optic Electric Field Sensor Technology

SPIE Proceedings, 1987
The properties of piezoactive plastics are reviewed as well as the fiber-optic electric field sensors studied so far. A particular configuration consisting of a concentric piezoactive jacket on the glass fiber is discussed in detail and the frequency response of this sensor is projected over a wide range of frequencies.
J Jarzynski, R P. De Paula
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Low-cost DC electric field sensor

Sensors and Actuators A: Physical, 2007
The present communication suggests a novel relatively simple easy to build inexpensive DC and ULF electric field sensor. The present device can be regarded as a member in a class of sensors whose sensing ability is due to the steady repetitive movement of their electrodes.
Ben-Zion Kaplan, Vladimir Boroda, Uri Suissa   +2 more
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Optical-fiber copolymer-film electric-field sensor

Applied Optics, 1983
Characteristics of a fiber-optic sensor for the detection of external electric fields are presented. This device utilizes a single-mode fiber that is embedded in a poled vinylidene fluoride-tetrafluoroethylene copolymer film and incorporated as the sensor arm of a Mach-Zehnder interferometer.
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Electro-optic polymer electric field sensor

SPIE Proceedings, 2011
Modern 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, S. Chadderdon, Richard Gibson, B. Shreeve, Richard H. Selfridge, Stephen M. Schultz, Wen C. Wang, Richard Forber, J. Luo   +8 more
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Vacuum Steered-Electron Electric-Field Sensor

Journal of Microelectromechanical Systems, 2014
In 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, Dirk P. H. De Bruyker, Scott J. Limb, Eric M. Amendt, Doug A. Overland   +4 more
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Magnetic and Electric Field Sensors

2015
The 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

1999
Abstract : 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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