Results 251 to 260 of about 114,481 (300)

Lightning Strike at a Grounding Device

Elektrichestvo, 2020
The statistical distributions of lightning current parameters obtained from an analysis of natural lightning waveforms carried out by three research centers are considered, and it has been found from the consideration results that the extreme values of these parameters, based on which the recommendations of the relevant IEC standards were elaborated ...
Rudolf N. KARYAKIN, Viktor G. LOSEV
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Grounding for surge-protective devices ground resistance versus ground impedance

2006 IEEE Power Engineering Society General Meeting, 2006
The aim of this paper is to address the often loosely used terms of impedance and resistance as related to grounding, and to educate the reader as to the significant difference between these two terms when contemplating the behavior of grounding systems impressed with transient impulse currents.
A.J. Surtees, F.D. Martzloff, A. Rousseau   +2 more
openaire   +1 more source

Testing device for surgical grounding plates

Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 1992
This paper reports about a new device for safety test of disposable grounding plates for electrosurgery. Neutral electrodes (grounding plates, dispersive electrodes) must fulfill the requirements of the american AAMI HF-18 standard. Instead of measurements on human volunteers an electronic devive was built to simulate human skin. Its conductive surface
null Nessler, null Huter, null Wang
openaire   +1 more source

Compact Wireless Devices with Defected-Ground Structures

2006 International Conference on Wireless and Mobile Communications (ICWMC'06), 2006
In this paper are presented some investigations on micro- strip defected ground structures (DGS). It is shown that the presence of a slot in the ground plane can substantially enhance the electric coupling, or the electric part of a mixed coupling between resonators and its external feedings.
Nicolae Militaru, Marian Gabriel Banciu, C. A. Dutu, L. Trupina, George Lojewski   +4 more
openaire   +1 more source

Research on Hanging Grounding Wire Device with Integrated Electroscope and Grounding

2019 14th IEEE Conference on Industrial Electronics and Applications (ICIEA), 2019
Hanging the grounding wire during the catenary daily power outage operation is the significant link to ensure safe work. While maintaining, the electroscope must be firstly used for electricity inspection before grounding wires. Since the operation is carried out step by step, it is easy to mistake tools and there might be inconsistency between the ...
Jiajun Liu, Sidan Han
openaire   +1 more source

Remote monitoring of the condition of the grounding device

Digital technology security, 2023
In connection with the rapid development of technologies, increasing the volume of data exchange and increasing requirements for information security, there is a need to pay special attention to the causes of possible data loss. One of the most common reasons is the quality of power supply of telecommunications networks.
Valeriy E. Mitrokhin, Aleksandr S. Naumov   +1 more
openaire   +1 more source

Ground radiation antenna for mobile devices

2017 Sixth Asia-Pacific Conference on Antennas and Propagation (APCAP), 2017
This paper gives a comprehensive review on ground radiation antennas. Ground radiation antennas are developed to achieve miniaturization and performance enhancement for mobile antennas. The operation concept is demonstrated first, and various techniques including wideband, multiband, high-sensitivity, multiple-input multiple-output (MIMO) and circular ...
Longyue Qu, Hyung-Hoon Kim, Hyeongdong Kim   +2 more
openaire   +1 more source

Photoswitchable biomaterials as grounds for optobioelectronic devices

Bioelectrochemistry and Bioenergetics, 1997
Abstract Optobioelectronic systems provide a means for the electronic transduction of recorded optical signals. The methodologies to assemble optobioelectronic devices are reviewed. One method involves the chemical modification of redox enzymes with photoisomerizable units and their integration with electrode surfaces.
Itamar Willner, Bilha Willner
openaire   +1 more source

Night vision devices for ground environment

IEEE Aerospace and Electronic Systems Magazine, 1999
The PM N-V/RSTA is procuring the Driver's Vision Enhancer (DVE) thermal imaging system for use in combat and tactical wheeled vehicles. The DVE uses uncooled forward looking infrared technology compared to the I/sup 2/ technology currently in the field.
P.S. Best, D.J. Collins, D. Piccione, D. Ferrett   +3 more
openaire   +1 more source

GROUND PREPARATION DEVICE

2001
The invention relates to a ground preparation device (8) comprising a frame (10), to which at least one ground preparation tool and wheels (14) that roll along the ground are attached. The position of the wheels (14) and/or the ground preparation tool in relation to the frame can be modified by a hydraulic cylinder (24, 80) and detected by a sensor (58)
DEERE & CO, DANNIGKEIT HELMUT
openaire   +1 more source