Electrical Ballast is one kind of the ballasts; it is the electronic equipment which adopts electronic technology to drive the electrical light source to produce light.
Introduction of all kinds of organic materials and their applications. More information about organic materials is on Alfa Chemistry.
http://www.alfa-chemistry.com/products/optoelectronic-materials-132.htm
Let’s understand the concept of “Wireless charging system”. This presentation is going to elaborate step-by-step how the wireless charging system actually works. Later on you will find information about its components, some roadblocks and feasibilities. I’m sure you will love to see it.
If the overall STP plant can have a constant water flow from the wastewater treatment process and the electrical generator can work well in the application, the electrical power generation is possible to feedback to the STP electrical board panel for pumping and STP auxiliary application.
Hence it will have a self-ecosystem in both water treatment and electrical generation and therefore provides alternative energy for the treatment plant to operate using its own flowing water from the wastewater treatment process.
Introduction of all kinds of organic materials and their applications. More information about organic materials is on Alfa Chemistry.
http://www.alfa-chemistry.com/products/optoelectronic-materials-132.htm
Let’s understand the concept of “Wireless charging system”. This presentation is going to elaborate step-by-step how the wireless charging system actually works. Later on you will find information about its components, some roadblocks and feasibilities. I’m sure you will love to see it.
If the overall STP plant can have a constant water flow from the wastewater treatment process and the electrical generator can work well in the application, the electrical power generation is possible to feedback to the STP electrical board panel for pumping and STP auxiliary application.
Hence it will have a self-ecosystem in both water treatment and electrical generation and therefore provides alternative energy for the treatment plant to operate using its own flowing water from the wastewater treatment process.
Presentación para las jornadas de comunicación organizadas por e.com (Oviedo, 985275374) para la UGT de Gijón. Cómo hacer más eficaz la comunicación sindical.
A novel fuzzy logic control for a zero current switching-based buck converte...IJECEIAES
This research provides a new control technique for mitigating conducted electromagnetic interference (EMI) in a buck converter designed for solar applications. Indeed, hard-switching direct current to direct current (DC-DC) converters, commonly used in industrial applications, pose a significant risk to the surrounding environment regarding electromagnetic compatibility (EMC). Usually, the fast-switching phase induces abrupt changes in current and voltage, which adds to substantial electromagnetic interference in both conducted and radiated modes and excessive auditory noise. An architecture based on the duality of soft-switching topology and fuzzy logic control technology is developed to address these issues. On the one hand, resonant circuit topologies are used to induce switches to achieve soft switching conditions, which subsequently lessen the effects of EMI. On the other hand, the adoption of fuzzy logic control technology is interesting since it can reduce electrical stresses during switching. Furthermore, the simulation results show that zero current switching (ZCS) soft-switching closed-loop fuzzy logic converters outperform typical open-loop converters and softswitching closed-loop converters with proportional integral (PI) control in terms of EMC requirements.
The negative impacts or side effects of a damper circuit insertion in an LCL passive filter utilized to filter DC/AC inverters output voltage is presented in this paper. For comparative study, this paper discusses two damping configurations, namely series and parallel damping, as well as the LCL filter without damping element. Four criteria are used to explore the impacts of the damper circuits, i.e. their total harmonic distortions (THDs), the output voltage amplitude, the output power and the power efficiency. Theoretically and emphirically shown by previous studies, the damper can indeed reduce the peak resonance frequency of the filter in its frequency response curve. However, in any circumstance, it can potentially reduce the inverters power and efficiency, voltage output amplitude, and cannot improve its THD reduction. The analysis results have shown that the side effects depends also on the load conditions, which are different for each damping circuit configuration.
Characterization and Modeling of Power Electronics DeviceIAES-IJPEDS
During the three decades spent, the advances of high voltage/current semiconductor technology directly affect the power electronics converter technology and its progress. The developments of power semiconductors led successively to the appearance of the elements such as the Thyristors, and become commercially available. The various semiconductor devices can be classified into the way they can be controlled, uncontrolled category such as the Diode when it’s on or off state is controlled by the power circuit, and second category is the fully controlled such as the Metal Oxide Semiconductor Field Effect Transistor (MOSFET), and this category can be included a new hybrid devices such as the Insulated Gate Bipolar Transistor (IGBT), and the Gate Turn-off Thyristor (GTO). This paper describes the characteristics and modeling of several types of power semiconductor devices such as MOSFET, IGBT and GTO.
Designing and testing of metal oxide surge arrester for EHV lineRohit Khare
Surge arresters constitute an indispensable aid to insulation coordination in electrical power systems. There the voltages which may appear in an electrical power system are given in per-unit of the peak value of the highest continuous line-to-earth voltage, depending on the duration of their appearance. The voltage or overvoltage which can be reached without the use of arresters is a value of several p.u. If instead, one considers the curve of the withstand voltage of equipment insulation (here equipment means electrical devices such as power transformers) one notices that starting in the range of switching overvoltages, and especially for lightning over voltages, the equipment insulation cannot withstand the occurring dielectric stresses. At this point, the arresters intervene. When in operation, it is certain that the voltage that occurs at the terminal of the device - while maintaining an adequate safety margin - will stay below the withstand voltage. Arresters’ effect, therefore, involves lightning and switching over voltages.
The time axis is roughly divided into the range of lightning overvoltage (microseconds), switching overvoltages (milliseconds), temporary overvoltages (seconds) – which are commonly cited by the abbreviation "TOV" – and finally the temporally unlimited highest continuous system operation voltage.
Fabrication and experimental study of transformer 400 V with a simple rectif...IJECEIAES
The demand for increased voltage in renewable energy sources is relatively high. This study examines the rapid development of technology considering the use of voltage-increasing transformers. Voltage regulator circuits are generally used to stabilize the output voltage of the rectifier according to the amount of input from the transformer. However, components for highvoltage stabilizer circuits are rare, which becomes an obstacle to the stabilization of the rectifier output. This study aimed to determine the performance of the designed rectifier circuit against a non-center tap step-up direct current (DC) 400 V transformer and compare the measurement results to manual calculations. The research method is a direct comparison between the input and output voltage values of the transformer after going through a rectifier circuit. This experiment was conducted using the repeatability method three to five times for each voltage variation on the transformer. The voltage variations successfully created are 0 to 50, 0 to 100, 0 to 200, and 0 to 400 V. The output test results from the DC transformer and rectifier circuit show linear results and an increase in peak-to-peak voltage data between the transformer and rectifier outputs by 3.8%.
Vaccine management system project report documentation..pdfKamal Acharya
The Division of Vaccine and Immunization is facing increasing difficulty monitoring vaccines and other commodities distribution once they have been distributed from the national stores. With the introduction of new vaccines, more challenges have been anticipated with this additions posing serious threat to the already over strained vaccine supply chain system in Kenya.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
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Event Management System Vb Net Project Report.pdfKamal Acharya
In present era, the scopes of information technology growing with a very fast .We do not see any are untouched from this industry. The scope of information technology has become wider includes: Business and industry. Household Business, Communication, Education, Entertainment, Science, Medicine, Engineering, Distance Learning, Weather Forecasting. Carrier Searching and so on.
My project named “Event Management System” is software that store and maintained all events coordinated in college. It also helpful to print related reports. My project will help to record the events coordinated by faculties with their Name, Event subject, date & details in an efficient & effective ways.
In my system we have to make a system by which a user can record all events coordinated by a particular faculty. In our proposed system some more featured are added which differs it from the existing system such as security.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
Automobile Management System Project Report.pdfKamal Acharya
The proposed project is developed to manage the automobile in the automobile dealer company. The main module in this project is login, automobile management, customer management, sales, complaints and reports. The first module is the login. The automobile showroom owner should login to the project for usage. The username and password are verified and if it is correct, next form opens. If the username and password are not correct, it shows the error message.
When a customer search for a automobile, if the automobile is available, they will be taken to a page that shows the details of the automobile including automobile name, automobile ID, quantity, price etc. “Automobile Management System” is useful for maintaining automobiles, customers effectively and hence helps for establishing good relation between customer and automobile organization. It contains various customized modules for effectively maintaining automobiles and stock information accurately and safely.
When the automobile is sold to the customer, stock will be reduced automatically. When a new purchase is made, stock will be increased automatically. While selecting automobiles for sale, the proposed software will automatically check for total number of available stock of that particular item, if the total stock of that particular item is less than 5, software will notify the user to purchase the particular item.
Also when the user tries to sale items which are not in stock, the system will prompt the user that the stock is not enough. Customers of this system can search for a automobile; can purchase a automobile easily by selecting fast. On the other hand the stock of automobiles can be maintained perfectly by the automobile shop manager overcoming the drawbacks of existing system.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Democratizing Fuzzing at Scale by Abhishek Aryaabh.arya
Presented at NUS: Fuzzing and Software Security Summer School 2024
This keynote talks about the democratization of fuzzing at scale, highlighting the collaboration between open source communities, academia, and industry to advance the field of fuzzing. It delves into the history of fuzzing, the development of scalable fuzzing platforms, and the empowerment of community-driven research. The talk will further discuss recent advancements leveraging AI/ML and offer insights into the future evolution of the fuzzing landscape.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
TECHNICAL TRAINING MANUAL GENERAL FAMILIARIZATION COURSEDuvanRamosGarzon1
AIRCRAFT GENERAL
The Single Aisle is the most advanced family aircraft in service today, with fly-by-wire flight controls.
The A318, A319, A320 and A321 are twin-engine subsonic medium range aircraft.
The family offers a choice of engines
1. The performance test of Electrical Ballast
Electrical Ballast is one kind of the ballasts; it is the electronic equipment which adopts electronic
technology to drive the electrical light source to produce light. Modern Fluorescent lamps increase to use
electronic ballast, compact and small, even can integrate electrical ballast and lamp tube, at the same
time, electrical ballast usually can be compatible with starter function, thus it can also eliminate the
starter.
Electrical Ballast has obvious advantages to develop the energy efficiency and quality of the lighting
system; it is the new international recommended applications products, which is also the future trend.
Pay attention to the harmonic content. The new revised “AC-supplied electronic control gear for tubular
fluorescent lamps-performance requirements”(GB/T15144－2005) has canceled the class of electronic
ballast (Class L and Class H) in the old standard, the harmonic limit should meet “Electromagnetic
Compatibility, Limits, Harmonic, Current Emission Limits”(GB17625·1－2003).
At present, there are electrical performance testing and EMC characteristics for electronic ballast testing.
Electrical performance is the basic performance of Electrical Ballast, for Electrical Ballast, mainly has
three characteristics testing: Input Parameters Measurement, Output Stably Parameters Measurement
and Output Startup Parameters Measurement. Input Parameters Measurement has voltage, current and
power, power factor, power net frequency, total harmonic and 0~39 harmonic test. Output Stably
Parameters Measurement has lamp voltage, current, power, filament, imported cathodic current, crest
factor, oscillatory frequency test. Output Startup Parameters Measurement has preheats time, lamp
voltage, lamp current, filament current, guided cathodic current curve and parameter. Lisun combines
the latest international and domestic standards of IEC60929, IEC60969, IEC61000-3-2,
GB/T15144-20005, GB/T17263-1998 etc and pushes the WT5000 Electronic Ballast Tester, adopts a
super-maximal LCD for displaying waveforms and parameters directly. In addition to this, WT5000
Electronic Ballast Tester has expanding analysis for envelop wave.
Besides the electric performance, the electromagnetic compatibility characteristics (including EMI and
EMS) test and evaluation of Electronic Ballast is very important, when users use standard compliant
ballast, its peripheral electronic devices will not be disturbed, such as computer, wireless phone and a
number of professional electronic equipment. Electronic Ballast electromagnetic compatibility test
includes surge test, electrostatic test and EMI test. Moreover, ring wave test is also requested by Energy
Star in April, 2013. For this, Lisun Group pushed series of EMC test equipments, includes ESD61000-5
Electrostatic Discharge Simulator, SG61000-5 Surge Generator, CSS61000-11 Ring Wave Generator
and KH3962 EMI Test System.
Lisun Group’s WT5000 Electrical Ballast Tester and EMC test equipment is widely applied to Luminaries
manufacturing enterprise and lab, such as Institute of Testing and Certification India Pvt. Ltd (India), LED
shine (Netherland), PT. SHARP SEMICONDUCTOR INDONESIA (Indonesia), TUV Rheinland InterCert
Kft.( Hungary), Capital Power Systems Ltd(India) ,Fiberli (Turkey) and etc. The reason why Lisun can
win some many customers is because we always practice the motto of right products, right price and
right service. Lisun will continue feedback good quality products and superior service in the feature.
