scholarly journals METHOD OF MEASUREMENT AND REDUCTION OF THE ELECTROMAGNETIC DISTURBANCES INDUCTED BY SWITCHING SURGES IN LV CIRCUITS

Author(s):  
Patryk Wąsik

This paper presents a fast, reliable and portable method for measuring electromagnetic disturbances in LV circuits (overcurrent circuit breakers). The experiment was carried out under conditions reflecting the real measurement environment. The method was verified and confirmed by a series of measurements with passive components reducing the disturbance. The results of the measurements made it possible to obtain suitable EMI reduction solutions, which can be used to protect commutators or end consumers. The results obtained make it possible to apply the method to measurements of multichannel circuit breakers, in which measuring the turn-on time of individual channels is important for the correct operation of the devices.

Horizons ◽  
2018 ◽  
Vol 45 (1) ◽  
pp. 132-136
Author(s):  
Richard Gaillardetz

Our roundtable wishes to explore the need for the church today to move beyond what we might call the orthodoxy/dissent binary, that is, the assumption of one narrowly construed orthodox position, over against which all other construals of the Christian faith are presented as heretical or at least dissenting positions. This binary presents, for many scholars today, insuperable difficulties. To begin with, it emphasizes doctrinal unity over theological diversity. It privileges office over charism, magisterium over the sense of the faithful, authoritative pronouncement over communal discovery. The dominance of the orthodoxy/dissent binary depends in turn on an account of doctrinal teaching authority still indebted to Pope Pius XII and his claim that when the ordinary papal magisterium has pronounced on a matter, it is no longer subject to open debate. The solution, in the minds of some, lies in dispelling dangerous notions of orthodoxy, heresy, and dissent as intrinsically hegemonic terms that mask politically oriented power regimes. I am not inclined to dismiss entirely, however, claims to doctrinal normativity, even as I acknowledge the real danger of abuse.


2013 ◽  
Vol 768 ◽  
pp. 388-391
Author(s):  
M. Santhosh Rani ◽  
Julie Samantaray ◽  
Subhransu Sekhar Dash

This paper presents a novel application of full-bridge series parallel resonant converter (FBSPRC) for dc source and secondary battery interface. Secondary batteries has been widely used in the application of residential, industrial and commercial energy storage systems because of its low energy conversion loss, which enhances the systems overall efficiency. A series parallel loaded resonant converter (SPRC) which is a subset of DC-DC converter can be operated with either zero-voltage turn-on (above resonant frequency) or zero current turn off (below resonant frequency) to eliminate the turn on and turn-off losses of the semiconductor devices. This converter is widely used to achieve reduction in size of the passive components of the converter such as inductor, capacitor and transformers. Simulation results based on a 12V 45Ah battery charger are proposed to validate the analysis and to demonstrate the performance of the proposed approach. Satisfactory performance is obtained from the measured results. The simulation results validate the effectiveness of the chosen battery charger.


2018 ◽  
Vol 7 (2.8) ◽  
pp. 291 ◽  
Author(s):  
Raju Anitha ◽  
M Nishitha ◽  
K Akhila ◽  
K Sai Anusha ◽  
G Srilekha

The internet of Things (IOT) is always giving unprecedented answers for the customary issues looked by man.One of the real obstacles in city is we are spending huge expenses on street light.  To control the street lights based on detection of sunlight by implemented with smart embedded system. The paper is mainly utilized for smart and climate adaptive lighting in street lights. The street lights are automatically ON during the evening time and automatically OFF during day time.The street light can be accessed to turn ON or OFF at anyplace and anytime through web.In addition to that On top of the street light we are placing camera to track the activities performed on the street and where the recordings are stored in a server. Furthermore a panic button is placed on the pole, If there is any emergency situations like harassment, robbery there is a panic button is available at the reachable height any person can press it if he is in danger. If people are unable to press the panic button, they should use voice recognition which is connected to panic button, when it recognises some commands like help, it automatically press the panic button. Whenever the panic button is pressed, the footages at that time recorded by the camera is sent straightforwardly to the cloud account. The near specific police headquarters can have access of the account by which they can see the incident’s spot. Every region's street lights are associated with the specific area's police headquarters and cloud account can be accessible by each of them. Here GSMTechnology is eliminated completely.Safety and energy consumptions can be ensured by this idea.


2016 ◽  
Vol 128 (13) ◽  
pp. 4308-4313 ◽  
Author(s):  
Wenjuan Zhou ◽  
Yuqing Cao ◽  
Dandan Sui ◽  
Chao Lu

Author(s):  
JEFFERSON GÚTIERREZ ◽  
◽  
NICOLAS CALDERON ◽  
JOSE FRANCO

This article presents the design and construction of a mobile robot (E-BOT) both in the hardware and in the software part, which works as a support tool for teaching processes and allows to consolidate learning in related topics. a Programming having as its scope repetitive structures, this through a series of previously constructed learning elements. E-BOT has a series of actuators (Led, oled, servomotor, motors) and sensors (ultrasound and reflective light) which are controlled by means of Arduino that allow an easy interaction of EBOT with the real world. Additionally, the construction of a verification software is carried out that allows us to validate the correct operation of all the modules built.


1991 ◽  
Vol 4 (2) ◽  
pp. 297-319 ◽  
Author(s):  
Joan L. Richards

The ArgumentIt has long been apparent that in the nineteenth century, mathematics in France and England developed along different lines. The differences, which might well be labelled stylistic, are most easy to see on the foundational level. At first this may seem surprising because it is such a fundamental area, but, upon reflection, it is to be expected. Ultimately discussions about the foundations of mathematics turn on views about what mathematics is, and this is a question which is answered by a variety of different groups including mathematicians, students, curricular planners, parents, etc. Mathematical practice rests on some kind of mixture of the answers to this fundamental question which come from these diverse groups. Comparing the cultural matrices which supported mathematics in France and Britain in the first decades of the nineteenth century sheds light on the real though often subtle differences in the ways the subject was pursued in the two countries.


Tribologia ◽  
2021 ◽  
Vol 293 (5) ◽  
pp. 73-84
Author(s):  
Stanisław Strzelecki

In journal bearings the misalignment of the journal and sleeve axis causes a load concentration on their edges, mixed lubrication conditions, an increase in the bearing temperature, rotor instability, and intensive wear of mating parts. The rotating machines are controlled by means of the temperature and vibration transducers, which are placed in the middle plain of the bearing housing. This arrangement of transducers gives no information about the real distance between the journal surface and bearing edges, and, in case of misaligned shaft, it has crucial meaning for the correct operation of turbo unit. This paper presents the theoretical and some experimental results of turbo unit journal bearing operating in misaligned conditions. The results point out the necessity of the precise control of the lubricating gap and the temperature generated on the bearing edges. It was also found that the increase in misalignment also generates an increase in power loss.


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