Results 11 to 20 of about 204,714 (304)

Estimate of intrinsic safety of capacitive circuits [PDF]

open access: yesE3S Web of Conferences, 2019
A universal method has been developed and tested for computer estimate of intrinsic safety of inductive capacitive circuits, which takes into account the most hazardous discharge type by contact closure and the regression dependences are obtained of minimal igniting energy on discharge time in a capacitive circuit and the comparison is made of results ...
Hladkov Oleksandr   +2 more
openaire   +3 more sources

DART – Advanced Intrinsic Safety

open access: yesInternational Journal of Power System Operation and Energy Management, 2012
Intrinsic safety (I.S) is a worldwide accepted standard to protect low power electrical circuits from the potentially explosive hazardous area. End users throughout the fieldbus world are demanding more power to connect more instruments to their Fieldbus segments in Class I, Division 1, and Class I, Division 2, hazardous location applications.
Nilima Warke, Madhavi Talar
openaire   +3 more sources

Design of mine-used intrinsic safety ultrasonic ranging circuit system

open access: yesGong-kuang zidonghua, 2016
The paper introduced composition and working mechanism of driving circuit and echo processing circuit of mine-used intrinsic safety ultrasonic ranging circuit system.
KONG Weizheng   +5 more
doaj   +2 more sources

Design of internal power supply circuit for mining intrinsic safety broadcasting system equipment [PDF]

open access: yesMeikuang Anquan
The mining intrinsic safety broadcasting system equipment has the characteristics of unbalanced load current and high power consumption. In response to the problems of high start-up impulse current, short power supply distance, unreliable voltage ...
Dedong ZOU, Chengdong LI
doaj   +2 more sources

Tribological Properties of Attapulgite Nanofiber as Lubricant Additive for Electric-Brush Plated Ni Coating

open access: yesLubricants, 2023
In order to expand the application field of attapulgite in tribology, the tribological properties of attapulgite as a lubricant additive on electric-brush plated Ni coating were investigated using the ball-disc contact mode of a SRV-IV friction and wear ...
Feng Nan, Dong Wang
doaj   +1 more source

Minimum Values of Voltage, Current, or Power for the Ignition of Fire

open access: yesFire, 2022
Under some circumstances, fires can be ignited by electric current. The two main mechanisms for this are arcing/sparking and hot surfaces. However, it has been viewed for a long time that this will not happen if the voltage, current, energy, or power are
Vytenis Babrauskas
doaj   +1 more source

Applying Safety Concepts and Principles in Vital Controller Design

open access: yes, 2020
A vital controller is safety critical and its failures, if not mitigated in time, can contribute to hazards in the application system. With electronics advancing and automation increasing, the expanding complexity of a vital controller creates challenges
Shi, Fenggang
core   +1 more source

A Shorter Form of the Work Extrinsic and Intrinsic Motivation Scale: Construction and Factorial Validation

open access: yes, 2022
While workplace mental health has attracted attention in many countries, work motivation remains under-researched. Research identified that work motivation is associated with many organisational positive outcomes including workplace mental health.
Nelly Otoo   +11 more
core   +1 more source

A novel time–frequency–space method with parallel factor theory for big data analysis in condition monitoring of complex system

open access: yesInternational Journal of Advanced Robotic Systems, 2020
The spatial information of the signal is neglected by the conventional frequency/time decompositions such as the fast Fourier transformation, principal component analysis, and independent component analysis. Framing of the data being as a three-way array
Liu Yang   +6 more
doaj   +1 more source

A Boundary-Element Analysis of Crack Problems in Multilayered Elastic Media: A Review

open access: yesMathematics, 2023
Crack problems in multilayered elastic media have attracted extensive attention for years due to their wide applications in both a theoretical analysis and practical industry.
Lei Lan   +5 more
doaj   +1 more source

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