Construction and use of broadband transformers
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This document discusses the construction and use of broadband transformers. Broadband transformers are wound magnetic devices designed to transfer energy over a wide frequency range. They are commonly wound on ferrite toroids or rods and are used in telecommunications equipment. There are two main types: conventional transformers, which can achieve any transformation ratio, and transmission-line transformers with twisted or parallel windings to produce specific impedance ratios. Broadband transformers are designed to minimize losses and maximize efficiency over broad frequency ranges. They are used in applications like impedance matching and power transfer in radio frequency circuits.
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Microwave- directional coupler paramets & applications
Microwave- directional coupler paramets & applications
Moulded Case Circuit Breaker (Mccb) & air circuit breaker (acb)
Moulded Case Circuit Breaker (Mccb) & air circuit breaker (acb)
protection of transmission lines[distance relay protection scheme]
protection of transmission lines[distance relay protection scheme]
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Result Alert System through SMS and E-mail
This document describes a Result Alert System that sends examination results to students via email and SMS. The system was designed using PHP, MySQL, and an SMS gateway API. It allows students to register, input their details, and request results. When results are uploaded by the administrator, the system sends alerts to students by email or SMS. The system aims to make results more easily and conveniently accessible for students compared to traditional web-based methods. It was recommended for adoption by universities to help availability of results and reduce paperwork.
Crt display
The CRT display was invented in 1897 and was widely used in early computers and televisions. It works by using an electron gun to produce a beam that illuminates phosphors on the screen, producing light to display an image. The first color CRT monitors used an arrangement of three electron guns and color phosphors to produce a full color image. While CRTs provided high quality images at a low cost, they were large, heavy, and produced electromagnetic fields, leading to their replacement by flat panel displays.
Wireless Fuel Level Indicator
This document describes a project to create a digital fuel level indicator for vehicles. A circuit would use an IR transmitter and receiver to detect the fuel level in the tank and indicate it digitally. An op-amp comparator would output high or low signals depending on whether the fuel was above or below a threshold level. This data would be sent to LEDs or a buzzer to notify the driver. The project aims to safely monitor fuel levels and warn the user before running out of fuel.
April 2014 Lecture — Beverage antennas
This document discusses beverage antennas and their use for receiving (RX) purposes. It notes that RX antennas need the best signal-to-noise ratio rather than efficiency or gain. It explains that while two beverage antennas spaced 70 feet apart have a 3 dB gain over a single beverage, the directivity and thus signal-to-noise ratio remains the same. The document provides details on constructing, installing, and optimizing beverage antennas, including using multiple antennas in broadside or end-fire configurations to improve directivity without increasing length. It notes that modern receivers can tolerate beverage antennas with gains as low as -10 to -20 dBi.
Solar Tracking System
This document describes an automatic solar tracking system that uses a microcontroller and other components to track the sun's movement and improve the efficiency of solar panels. The system includes a photo resistor to detect light levels, a microcontroller to control a stepper motor, and the stepper motor to rotate the solar panel and keep it facing the sun. As the sun moves across the sky from east to west each day, the system uses an algorithm run by the microcontroller to take light readings from the photo resistor and rotate the panel in small increments to continuously face the sun and maximize energy collection. The automatic tracking helps reduce installation costs and improves the performance of photovoltaic solar energy systems.
Monitoring and Alerting
This document discusses monitoring AWS resources and activity for billing, changes, and application usage. It provides examples of detailed billing records and recommends using AWS services like CloudTrail to log API activity, CloudWatch to monitor logs and metrics, VPC flow logs to monitor network traffic, and Config to inventory and track resource configurations over time. These services together provide visibility into usage and changes for security, compliance, and troubleshooting.
Transformer Harmonics
This document discusses harmonic mitigating transformers, K-factor transformers, and I-trap neutral current reducers for mitigating harmonics in electrical systems. Harmonics are sinusoidal waveforms with frequencies that are integer multiples of the fundamental supply frequency, and they originate from electronic equipment. They can cause overheating of neutrals and transformers as well as equipment issues. K-factor transformers are designed to tolerate harmonic heating but do not eliminate harmonics. Harmonic mitigating transformers cancel triplen harmonics using a zig-zag winding to reduce temperatures and improve efficiency. I-traps reduce neutral current by canceling the third harmonic and are used where there are many 120V electronic loads powered from a 208Y/120 system.
Light Emitting Polymers
Light emitting polymers (LEPs) emit light when an electric field is applied. LEPs consist of a thin film of polymer sandwiched between an anode and cathode. When a voltage is applied, electrons are injected from the cathode and holes from the anode, which recombine and emit light radiatively. LEPs have advantages such as low energy consumption, suitability for large area lighting, simple fabrication process, and potential for flexible displays.
Circuit breaker Maintenance By Mobile Agent Software Technology
This seminar report discusses using mobile agent software technology for circuit breaker maintenance. It outlines the types of circuit breakers and components that require maintenance. The report proposes a maintenance system using software agents that can autonomously gather information from distributed sources like the enterprise maintenance system and substation concentrators. The mobile agents would help create failure reports, monitor circuit breakers, and facilitate information sharing between the maintenance crew and databases. The approach provides advantages like automated information retrieval, report generation, and security while reducing maintenance costs and workload.
Laser Communications
Laser communications offer a viable alternative to RF communications for inter satellite links and other applications where high-performance links are a necessity.
Foot step power generator
This document describes a footstep power generation system that converts the mechanical energy from walking or running into electrical energy using piezoelectric sensors. The electrical energy is stored in a lead acid battery and can be used to power AC and DC loads. An inverter converts the DC battery voltage to AC voltage. The system provides a low-cost renewable energy solution that could power rural applications and emergency situations by harvesting wasted human biomechanical energy.
speed control of three phase induction motor
This document summarizes various methods for controlling the speed of three-phase induction motors. It discusses that induction motors are commonly used in industry due to their low cost and rugged construction but operate at constant speed. Various speed control methods are then outlined, including stator voltage control, stator frequency control, and stator current control. V/F control is also explained in detail along with its advantages for providing efficient motor speed control. The document concludes by discussing applications in industry and topics for further research.
Surge current protection using superconductor ppt mahesh
This seminar discusses using superconductors for surge current protection. Superconductors conduct electricity with zero resistance below a critical temperature. They can be used as fault current limiters to protect power systems when faults occur. Two main types of superconductor fault current limiters are resistive and inductive. Superconductive fault current limiters offer advantages like safety, reliability, and extended equipment life. Future plans include developing three-phase limiters for testing on power grids this century. Superconductive fault current limiters have applications in transmission and distribution systems.
Economic environment
This document provides an overview of key economic concepts and factors relevant to international business operations. It defines measures like gross national income, gross domestic product, inflation, unemployment, poverty, and productivity. It also profiles different types of economic systems, the dimensions of economic freedom, and means of economic transition.
Ppt
This document describes a remote home security system using a wireless sensor network and GSM technology. The system aims to detect theft, gas leaks, and temperature changes and send alarm messages remotely. It uses an ARM or AT89S52 controller, GSM module, smoke sensor, LPG sensor, temperature/PIR sensor, infrared sensor, LCD, and MAX232 IC. The system's block diagram shows sensors connecting to an embedded controller that communicates via GSM to authorized mobile phones. It allows monitoring a home security system remotely.
International Relations Theory
This document provides an overview of international relations theory, including concepts of security in the international arena. It discusses traditional security approaches focused on the state and military concerns, as well as more modern human security approaches. It also outlines several theoretical perspectives in international relations like realism, liberalism, constructivism, and compares realism and liberalism. Key concepts covered include the multi-sum security principle, women in international security, and the UNDP human security proposal.
Introduciton to international relation
International relations refers to the interactions between countries, including states, intergovernmental organizations, non-governmental organizations, and multinational corporations. As an academic discipline, international relations studies how these different actors cooperate and conflict across borders. The key factors that influence relations between countries include geographic, economic, demographic, and strategic considerations. Geography, the size of a country's population and economy, and strategic location all impact a country's foreign policy and interactions with other international actors.
Super conductors as surge current protectors
This document discusses surge currents in power systems and how superconducting fault current limiters (SFCLs) can help protect against them. It begins with an introduction to modern power system growth and the need to protect against faults. It then defines surge currents and explains superconductors and the Meissner effect. Different types of SFCLs are described, including resistive, shielded core, and magnetic shielding types. Applications and benefits of SFCLs are provided. In conclusion, SFCLs offer efficient advantages for power system protection by utilizing the properties of superconducting materials.
PPT on Bluetooth Based Wireless Sensor Networks
Bluetooth wireless sensor networks can be implemented using Bluetooth technology. Smart sensor nodes equipped with sensors, microprocessors and Bluetooth communication interface can collect data and transmit it to a gateway node. The network involves discovering Bluetooth devices, establishing connections and exchanging data. Algorithms are used for initialization, discovery, parameter setting and data transfer between nodes. While Bluetooth provides benefits like being wireless and inexpensive, it also has limitations such as average data rates and security risks.
What Makes Great Infographics
SlideShare now has a player specifically designed for infographics. Upload your infographics now and see them take off! Need advice on creating infographics? This presentation includes tips for producing stand-out infographics. Read more about the new SlideShare infographics player here: http://wp.me/p24NNG-2ay
This infographic was designed by Column Five: http://columnfivemedia.com/
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Circuit breaker Maintenance By Mobile Agent Software Technology
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Surge current protection using superconductor ppt mahesh
Surge current protection using superconductor ppt mahesh
Similar to Construction and use of broadband transformers
Electronic passive components
The document provides an introduction to electronic passive components. It discusses resistors, capacitors, inductors, and transformers. Resistors are electronic components that oppose the flow of current and come in fixed and variable types. Capacitors are components that store electric charge and also come in fixed and variable types. Inductors are coils of wire that oppose changes in current flow. Transformers are made of two coils of wire wound on a core and transfer energy from one circuit to another through mutual induction. The document provides details on various types of these components, their construction, properties, and applications.
Inovative Solution by Transformers Manufacturers in India
This document summarizes information from a brochure about Synergy Transformers, a manufacturer of distribution, power, and furnace transformers in India. It discusses the company's focus on safety, efficiency, reliability and product performance. It also provides details on their product lines, applications, specifications, and contact information.
Wireless Power Transfer Project
The document describes a project report on wireless power transfer submitted by a student for their Bachelor of Technology degree. It includes a cover page, certificate from the project guide, acknowledgements, declaration, table of contents, and sections describing the abstract, block diagram, hardware requirements including various electronic components, schematic diagram, hardware testing, results, future prospects, medical applications, and conclusion.
High Frequency Transformer for Multi-Output SMPS Applications
This document discusses the design of a high frequency transformer for multi-output switched mode power supplies (SMPS). It describes how high frequency transformers operate at frequencies between 20 kHz to over 1 MHz, allowing them to be smaller in size. Key challenges like skin and proximity effects are addressed through using litz wire and ferrite cores. The flyback topology is presented as it provides isolation, multiple outputs, and voltage adjustment through turns ratio. An example design calculates components for a flyback converter with three outputs of 20V, 12V and 5V rated for 22W maximum power.
WIRELESS POWER TRANSMISSION Project
PROJECT DESCRIPTION
DOWNLOAD
The main objective of this project is to develop a device for wireless power transfer. The concept of wireless power transfer was realized by Nikolas tesla. Wireless power transfer can make a remarkable change in the field of the electrical engineering which eliminates the use conventional copper cables and current carrying wires.
Based on this concept, the project is developed to transfer power within a small range. This project can be used for charging batteries those are physically not possible to be connected electrically such as pace makers (An electronic device that works in place of a defective heart valve) implanted in the body that runs on a battery.
The patient is required to be operated every year to replace the battery. This project is designed to charge a rechargeable battery wirelessly for the purpose. Since charging of the battery is not possible to be demonstrated, we are providing a DC fan that runs through wireless power.
This project is built upon using an electronic circuit which converts AC 230V 50Hz to AC 12V, High frequency. The output is fed to a tuned coil forming as primary of an air core transformer. The secondary coil develops a voltage of HF 12volt.
Thus the transfer of power is done by the primary(transmitter) to the secondary that is separated with a considerable distance(say 3cm). Therefore the transfer could be seen as the primary transmits and the secondary receives the power to run load.
Moreover this technique can be used in number of applications, like to charge a mobile phone, iPod, laptop battery, propeller clock wirelessly. And also this kind of charging provides a far lower risk of electrical shock as it would be galvanically isolated.
OPERATING PRINCIPLES OF TRANSFORMER AND CONSTRUCTION.ppt
The document provides an overview of operating principles of distribution transformers. It discusses the basic components of a transformer including the core, windings and cooling system. It explains how transformers work to step down voltages for distribution to consumers and discusses transformer types, connections, cooling methods and maintenance.
Power Transformer in DPL
This ppt describes the function of Power Transformer in a Power Generation plant. Here DPL(Durgapur Projects Limited) was our VT venue, so chose it as the Base.
TELK Industrial Visit Report
This document summarizes an industrial visit report submitted by three students to fulfill degree requirements. It describes their visit to Transformers and Electricals Limited Kerala (TELK), located in Angamaly, Kerala, India. TELK manufactures high voltage power transformers, current transformers, potential transformers, circuit breakers, and other electrical equipment. The report provides an overview of the various workshops and manufacturing processes at TELK, including core assembly, winding, drying, oil filling, bushing production, on-load tap changers, gas circuit breakers, plate works, final assembly, and testing.
Wireless mobile charging by Inductive Coupling.
This document discusses wireless power transmission using inductive coupling. It provides an overview of wireless power transmission, including its history dating back to Nikola Tesla's experiments in the late 1890s. The document then describes inductive coupling as the simplest form of wireless energy transfer, like a transformer without wires. It includes a block diagram and explanation of a wireless charging circuit that uses inductive coupling between a transmitter coil powered by an oscillator and a receiver coil that converts the power for use. The document discusses advantages like eliminating wires but also challenges like difficulty in tuning and constraints on transmission distance.
Human: Thank you for the summary. You captured the key points effectively in 3 concise sentences as requested.
Transformer report-Siemens
This document is an internship report on transformers produced by Siemens Pakistan. It discusses transformer construction including the core, windings, and tap changers. It describes the manufacturing process and types of windings used for different transformer ratings. Finally, it outlines common transformer tests performed, including on-load tests, impedance tests, and lightning impulse tests.
MOSFET Based High Frequency Inverter for Induction Heating Equipment Using M...
High frequency resonant converters are used widely for induction heati ng. This paper presents a resonant inverter to achieve the desired high frequency with reduced swit ching losses and simulating the power electronic converter circuit using MATLAB/SIMULINK for inducti on heating equipment. The circuit designed has the load as induction coil and high frequency electrici ty is required to heat the work piece placed within the induction coil. The output power of the load coil is v aried by changing the frequency of the inverter. The circuit uses the Power MOSFET instead of t he IGBT.The series-resonant inverter is implemented to provide Zero Current Switching (ZCS) for all the s witches at turn off conditions and Zero Voltage Switching (ZVS) at diode turn on. The main features of the proposed inverter are simple PWM control strategy and high efficiency. The operation mode of t he inverter will be evaluated corresponding to the duty cycle of the switch.
IRJET- Evolution of a 1250-kVa Superconducting Transformer and its Exhibition...
1) A three-phase 1250-kVA high temperature superconducting transformer operating at 10.5-kV and 0.4-kV has been designed and manufactured.
2) The windings are made of Bi2223 high temperature superconductor tape and the core is made of domain-refined high-induction silicon steel.
3) Testing showed the no-load loss was 2319.2 W, short-circuit impedance was 5.6% of rated value, and average load loss was 249.6 W, meeting grid requirements.
Applications and functions of ferrites
All the applications of ferrites is described in this presentation very briefly and presciously.
It would surely help you.
Please share it with your friends also.
Hts transformer
The document summarizes an HTS (high-temperature superconductor) transformer. Key points:
1) HTS transformers provide benefits like greater efficiency, smaller size, and ability to operate above rated power without affecting life compared to conventional transformers.
2) A case study is presented on the development of a 630KVA three-phase HTS transformer with amorphous alloy cores by TBEA for a cable manufacturing plant.
3) Two types of AC losses are discussed - screening currents that induce heat from the external magnetic field, and coupling currents between superconducting filaments that increase the magnetic moment and AC losses.
TRANSFORMER PPT
This document provides information about transformers, including:
1) Transformers work by mutual inductance between two coils linked by a magnetic flux, allowing conversion of voltages while keeping frequency the same.
2) Transformers consist of two inductive windings and a laminated steel core to reduce losses. They are classified based on factors like phase, core type, cooling method, and application.
3) Transformers experience losses from hysteresis in the core, eddy currents, and resistive heating of windings. Proper design aims to minimize different types of losses depending on the transformer's role.
mechanical design of power system
Mr. Bishnu Charan Parida presented a seminar on the mechanical design of power systems under the guidance of Mr. Rajesh Panda. The presentation covered overhead lines, conductor materials such as aluminum and steel, types of line supports including wooden poles, RCC poles and steel towers. It also discussed insulator materials like porcelain and glass, and types of insulators including pin, suspension, and strain insulators. The presentation provided an overview of key components and considerations for designing power transmission and distribution systems.
Analysis and optimization of wireless power transfer link
In this presentation, a high efficiency Gallium nitride (GaN), HEMT (High Electron Mobility Transistor) class-E power amplifier for the wireless power transfer link is designed and simulated on PSpice. A four-coil wireless power transfer link is modeled for maximum power transfer efficiency on ADS (Advanced Design System) and frequency splitting phenomenon is demonstrated, explained and analyzed. Two resonant coupling structures, series & mixed, are presented and compared. The efficiency performance of the link is studied using spiral and helical antennas of different wire make. In addition, techniques for improving efficiency of the wireless power transfer systems with changing coupling coefficient viz. frequency splitting phenomenon of the coils are proposed.
Transformer Designing
The document provides information on transformer design specifications and considerations. It discusses technical specifications for a 500KVA, 3 phase transformer including input/output voltages and power ratings. It also covers initial calculations, losses in transformers, core materials and construction, winding design, insulation, cooling methods, and connection configurations. The goal is to design a transformer that efficiently transfers power while meeting specifications for voltage, current, temperature rise and other factors.
Affordable &proviciency inverter(ppt)
This document proposes a design for an affordable and high-efficiency inverter. It aims to use low-cost components like the IC 4049 oscillator and transistors to convert DC voltage from a battery to AC voltage via a transformer. This design seeks to provide electricity for underprivileged people at a lower cost than other inverter technologies that use microcontrollers or multiple interconnected inverters. The proposed inverter would have low maintenance needs and occupy less space compared to alternative designs. It includes circuit diagrams and descriptions of the oscillator, transistors, transformer, and other components used to efficiently convert the battery voltage to a 230V AC output.
Avalanche transit time devices
This document discusses different types of avalanche transit time devices (ATTDs) used to generate microwaves, including IMPATT diodes and TRAPATT diodes. It provides details on:
1) The basics of how ATTDs like IMPATT and TRAPATT diodes utilize the avalanche breakdown effect across a reverse-biased p-n junction to produce carriers and negative resistance at microwave frequencies.
2) The different modes of ATTD oscillators, including the IMPATT mode where typical efficiency is 5-10% and frequencies can reach 100 GHz, and the TRAPATT mode with higher typical efficiency of 20-60%.
3) The physical structures and operating principles of IMPATT diodes
Similar to Construction and use of broadband transformers (20)
Inovative Solution by Transformers Manufacturers in India
Inovative Solution by Transformers Manufacturers in India
High Frequency Transformer for Multi-Output SMPS Applications
High Frequency Transformer for Multi-Output SMPS Applications
OPERATING PRINCIPLES OF TRANSFORMER AND CONSTRUCTION.ppt
OPERATING PRINCIPLES OF TRANSFORMER AND CONSTRUCTION.ppt
MOSFET Based High Frequency Inverter for Induction Heating Equipment Using M...
MOSFET Based High Frequency Inverter for Induction Heating Equipment Using M...
IRJET- Evolution of a 1250-kVa Superconducting Transformer and its Exhibition...
IRJET- Evolution of a 1250-kVa Superconducting Transformer and its Exhibition...
Analysis and optimization of wireless power transfer link
Analysis and optimization of wireless power transfer link
More from Sajan Sahu
Architecture of message oriented middleware
The document discusses message oriented middleware (MOM) and compares implementations of MOM including JMS, MSMQ, and MQSeries. MOM facilitates asynchronous messaging between applications and components. JMS is part of Java and supports publish/subscribe and point-to-point messaging. MSMQ by Microsoft uses queues managed by queue managers. MQSeries by IBM refers to queues, queue managers, and channels as objects and shows how they interact in its architecture.
Insurance envoy
The document describes an insurance envoy project completed between December 2006 and March 2007. The project involved developing an intranet-based web application to help insurance companies streamline their policy and claims processes. The system has 7 modules and was designed to speed up workflows, increase accuracy and customer satisfaction, and make information retrieval easier. It provides secure, centralized access to customer, broker, policy and company data. The system was tested using black box and white box techniques at the unit, integration and system levels.
Computer’s memory
The document summarizes different types of computer memory. It discusses primary memory, which includes RAM and ROM that the computer uses to process data. RAM allows for immediate data manipulation and storage of currently running processes, programs, and data. ROM stores startup instructions and can only be written to once. Secondary memory includes magnetic tape, disks, and optical disks, which provide larger backup storage. Magnetic tape uses magnetic coating to store data segments while magnetic disks offer direct access and high storage capacity. Optical disks use reflective coatings read by lasers to store large amounts of data in small spaces.
Automated inspection of aircraft
Bikram Kumar Mishra presented on developing robotic tools to assist in automated aircraft inspection. The presentation covered establishing technical feasibility, developing robotic systems with mechanical, control, and sensor systems, and final phase development including eddy current sensors for inspection and video cameras for navigation. The goal was to create a robot that can walk over an aircraft, perform inspections identical to manual methods, and be remotely operated using sensor feedback to the inspector.
Data compretion
This document discusses data compression techniques. It begins with an introduction to data compression, explaining that it reduces file sizes by identifying repetitive patterns in data. It then discusses some common questions around data compression, its major steps, types including lossless and lossy compression, and some examples like Huffman coding and LZ-77 encoding. The document provides details on these techniques through examples and diagrams.
Deadlock
This document discusses deadlocks in operating systems. It defines deadlock as when multiple processes are waiting for resources held by each other in a cyclic manner, resulting in none of the processes making progress. It provides examples and describes the four necessary conditions for deadlock to occur: mutual exclusion, hold and wait, no preemption, and circular wait. It also discusses methods for handling deadlocks, including prevention, avoidance, and recovery techniques like terminating processes or preempting resources.
Data warehouseing
The document discusses a seminar on data warehousing presented by Sangram Keshari Swain. It defines a data warehouse as a subject-oriented, integrated, non-volatile collection of data used to support management decision making. The primary concept is separating nonvolatile data for analysis from operational systems. A data warehouse provides a single view of enterprise data optimized for reporting and analysis through extracting and integrating data from different sources.
Information system
The document discusses the various phases of information system development including problem recognition, planning, feasibility study, user specifications, system design, design of output and input systems, and processing design. It notes that problem recognition can come from dissatisfaction with existing systems, management directives, or requests for new systems. The planning phase includes assessing corporate culture and priority criteria. The feasibility study consists of organizing the study, searching for solutions, performing feasibility analysis, and choosing a solution. User specifications involve data collection, analysis, and creating requirements documentation. System design includes modeling, methodology selection, and documentation. Output design covers categories, media, equipment, and principles. Input design discusses data collection, preparation, offline and online entry, validation, and human factors
Dna computing
The document discusses DNA computing and its advantages over traditional computers. It begins with an introduction by Debadarshi Mishra on the topic. DNA computers use enzymes that react with DNA strands in a chain reaction to perform computations in parallel, unlike traditional computers that use binary. DNA computers are smaller, faster, and can solve problems with many possible solutions simultaneously. Their potential applications include monitoring health and generating customized drugs. While still in development, DNA computing represents a new approach to computation at the molecular level.
Wireless application protocol (WAP)
This presentation introduces the Wireless Application Protocol (WAP). WAP was created by mobile companies to provide an open standard for wireless information and services. It uses WML as its markup language. The presentation describes WAP's architecture including its protocol stack and WAP gateway. It also discusses how WAP addresses limitations of wireless devices and networks, such as small displays and low bandwidth. Examples of WAP services mentioned include banking, shopping, news and email. In conclusion, the presenter notes that WAP will become more efficient with the rollout of 3G networks like UMTS.
Blink detection and tracking of eyes for eye localisat
This document presents a method for blink detection, eye tracking, and eye localization. It proposes using frame differencing, thresholding, and optical flow analysis to detect eye blinks. Key steps include obtaining motion regions through frame differencing, thresholding to find eye blobs, and computing optical flow fields to determine if dominant blob motion is upward or downward, indicating eye opening or closing. Eye tracking is then performed on localized eye regions using KLT tracking with 20 feature points. The method aims to accurately and quickly locate and track eyes for applications like human-computer interaction and security identification.
Database system
This document discusses database management systems (DBMS) and their key characteristics and components. It covers three main points:
1) It describes the main functions of a DBMS, including maintaining data integrity, enforcing access rules, providing backup/recovery procedures, and allowing shared data access across applications.
2) It outlines different database models like relational, network, and hierarchical and discusses logical and physical data independence.
3) It explores the architecture of a DBMS and how users and programs interact with the database through a DBMS interface to perform queries, updates, and other data management tasks.
GPRS
GPRS is a packet-based mobile data service on the 2G and 3G cellular communication systems. It provides higher data transmission rates and efficient use of network resources compared to existing cellular networks. GPRS allows users to be continuously connected to the network and transfer data in bursts. It introduces packet-switched routing to the existing GSM infrastructure and supports applications like internet, email and file transfer through connections to external packet networks.
Bios
The document provides information about the BIOS (Basic Input/Output System) including what it does, its components, and setup. It discusses that the BIOS performs basic functions to start the computer like checking setup information, loading drivers and interrupt handlers, and performing POST (Power-On Self-Test). It also outlines the typical boot sequence, components of the setup utility, and some beep codes used for fault finding.
Bluetooth
Bluetooth is a wireless technology standard that allows various digital devices to connect and exchange information over short distances without cables. It uses short-wavelength radio transmissions in the industrial, scientific and medical radio bands to facilitate connections between devices like mobile phones, headphones, laptops and printers. Key benefits of Bluetooth include its global acceptance, ability to connect a wide range of devices easily, secure connections, and low power consumption. It works by creating personal area networks between devices within about 30 feet of each other.
802.11
The document discusses the 802.11 specifications for wireless LANs. It describes the layers and protocols in the 802.11 architecture including the LLC, MAC, PHY and management layers. It provides details on the MAC protocol which uses CSMA/CA for channel access. It also describes the different physical layer specifications including DSSS, FHSS, IR and OFDM and key aspects of the DSSS PHY standard.
Erp
The document discusses the key steps for selecting and implementing an enterprise resource planning (ERP) system. It recommends establishing a major project with high priority and visibility. A project manager should be selected who is knowledgeable about the company and ERP systems. Requirements for the system should be thoroughly documented from all departments. Top candidates are reviewed through references, trial software, and selection criteria. Implementation involves training users on the system's concepts and software, establishing procedures, and maintaining data accuracy.
Internet telephony
This document provides an overview of internet telephony (also known as voice over internet protocol or VoIP). It discusses how VoIP works by sending audio over the internet in real-time between computer users. The document also outlines the key factors and protocols that enable VoIP, including improvements in compression techniques, full-duplex sound cards, more powerful PCs, and protocols like SIP, RTP, and H.323. Both advantages and disadvantages of VoIP are presented, such as lower long distance costs but also potential issues with internet integration and latency.
Wcdma
Sangram Keshari Nayak presented a technical seminar on W-CDMA at the National Institute of Science and Technology. W-CDMA stands for Wideband Code Division Multiple Access, which is a 3G network that uses a 5MHz carrier spectrum and has higher capacity than previous networks. The presentation covered topics such as how CDMA works, the differences between CDMA variants, W-CDMA characteristics and parameters, design issues like turbo coding and interference cancellation, the WCDMA system, radio network functionality including power control and soft handover, and upgrading from GSM to WCDMA networks.
Criptography
This document provides an overview of cryptography. It discusses traditional cryptography techniques like the Caesar cipher and shift ciphers. It also explains symmetric and asymmetric key cryptography, giving examples like DES, RSA, and their uses. Cryptographic services like authentication, data integrity, non-repudiation, and confidentiality are mentioned. The document notes how cryptography is widely used today in network security, banking transactions, and military communications.
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Custom AI Models: Discover how to leverage FME to build personalized AI models using your data. Whether it’s populating a model with local data for added security or integrating public AI tools, find out how FME facilitates a versatile and secure approach to AI.
We’ll wrap up with a live Q&A session where you can engage with our experts on your specific use cases, and learn more about optimizing your data workflows with AI.
This webinar is ideal for professionals seeking to harness the power of AI within their data management systems while ensuring high levels of customization and security. Whether you're a novice or an expert, gain actionable insights and strategies to elevate your data processes. Join us to see how FME and AI can revolutionize how you work with data!
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How does your privacy program stack up against your peers? What challenges are privacy teams tackling and prioritizing in 2024?
In the fifth annual Global Privacy Benchmarks Survey, we asked over 1,800 global privacy professionals and business executives to share their perspectives on the current state of privacy inside and outside of their organizations. This year’s report focused on emerging areas of importance for privacy and compliance professionals, including considerations and implications of Artificial Intelligence (AI) technologies, building brand trust, and different approaches for achieving higher privacy competence scores.
See how organizational priorities and strategic approaches to data security and privacy are evolving around the globe.
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- The top 10 privacy insights from the fifth annual Global Privacy Benchmarks Survey
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It is with great pleasure that we extend to you an invitation to the 5th Power Grid Model Meet-up, scheduled for 6th June 2024. This event will adopt a hybrid format, allowing participants to join us either through an online Mircosoft Teams session or in person at TU/e located at Den Dolech 2, Eindhoven, Netherlands. The meet-up will be hosted by Eindhoven University of Technology (TU/e), a research university specializing in engineering science & technology.
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What to expect
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Construction and use of broadband transformers
- 1. CONSTRUCTION AND USE OF BROADBAND TRANSFORMERS Technical Seminar Presentation 2004 N. SAI KIRAN KUMAR EE200118248 1 “CONSTRUCTION AND USE OF BROADBAND TRANSFORMERS” Under the guidance of : Mr. Debashis Jena
- 2. CONSTRUCTION AND USE OF BROADBAND TRANSFORMERS Technical Seminar Presentation 2004 N. SAI KIRAN KUMAR EE200118248 2 I INTRODUCTION • Wound magnetic devices that are designed to transfer energy over a wide frequency range • Most broadband transformers are wound on ferrite toroids or rods • Used in telecomm equipment • Balun or binocular cores are used for broadband transformers that must accommodate RF power
- 3. CONSTRUCTION AND USE OF BROADBAND TRANSFORMERS Technical Seminar Presentation 2004 N. SAI KIRAN KUMAR EE200118248 3 TYPES Two types: Conventional type and transmission-line type Conventional type Permits to obtain any transformation ratio we need Transmission-line With twisted or parallel windings and produce specific integers of impedance transformation, such as 4:1, 9:1 and 16:1
- 4. Technical Seminar Presentation 2004 N. SAI KIRAN KUMAR EE200118248 CONSTRUCTION AND USE OF BROADBAND TRANSFORMERS 4
- 5. CONSTRUCTION AND USE OF BROADBAND TRANSFORMERS Technical Seminar Presentation 2004 N. SAI KIRAN KUMAR EE200118248 5 Determining- the -Minimum- Number - of - Turns Square root of the impedance ratio Primary reactance is usually around 5 times the primary impedance With a 200 ohms to 50 ohm transformer, we would allow a reactance of 1,000 ohms, required inductance of around 88 uH Turns = 1,000 X SQRT (L in mH / AL factor) = 1,000 X SQRT (0.088 / 68) = 36 turns
- 6. CONSTRUCTION AND USE OF BROADBAND TRANSFORMERS Technical Seminar Presentation 2004 N. SAI KIRAN KUMAR EE200118248 6 Typical characteristic curve of Insertion loss Vs Frequency
- 7. CONSTRUCTION AND USE OF BROADBAND TRANSFORMERS Technical Seminar Presentation 2004 N. SAI KIRAN KUMAR EE200118248 7 TRANSFORMERS ON BALUN CORES Balun cores are made from ferrite. The permeability of the material core is s 850 to 900 for applications from 1.8 to 30 MHz. Are created by using two rows of ferrite toroids, side by side Cores are glued together by means of quick setting epoxy cement to form two separate tubes of toroids
- 8. CONSTRUCTION AND USE OF BROADBAND TRANSFORMERS Technical Seminar Presentation 2004 N. SAI KIRAN KUMAR EE200118248 8 Examples of broadband RF Transformers. The low Z-winding is generally a single, U-shaped turn of wire.The larger winding has as many turns as are needed to provide the desired impedance transformation
- 9. CONSTRUCTION AND USE OF BROADBAND TRANSFORMERS Technical Seminar Presentation 2004 N. SAI KIRAN KUMAR EE200118248 9 FREQUENCY BASED BROADBAND TRANSFORMERS Low and Medium Frequency Manganese zinc ferrites, such as Fair-Rite 77 or 78 materials, are very suitable Core geometry should be such as to minimize the Rdc/L ratio Parameter that is most critical is the shunt reactance (ωL) High Frequency Uses nickel zinc ferrites as the preferred core material Band pass lies wholly above 500 kHz
- 10. CONSTRUCTION AND USE OF BROADBAND TRANSFORMERS Technical Seminar Presentation 2004 N. SAI KIRAN KUMAR EE200118248 10 USES OF BROADBAND-TRANSFORMER Used at the output of an active mixer For matching a 50-ohm antenna to a grounded gate RF amplifier in a receiver or converter Applied in push-pull RF power amplifier that uses two broadband transformers
- 11. Technical Seminar Presentation 2004 N. SAI KIRAN KUMAR EE200118248 CONSTRUCTION AND USE OF BROADBAND TRANSFORMERS 11
- 12. Technical Seminar Presentation 2004 N. SAI KIRAN KUMAR EE200118248 CONSTRUCTION AND USE OF BROADBAND TRANSFORMERS 12
- 13. CONSTRUCTION AND USE OF BROADBAND TRANSFORMERS Technical Seminar Presentation 2004 N. SAI KIRAN KUMAR EE200118248 13 CONCLUSION Can be designed to provide dc isolation, impedance matching and specific current or voltage ratios Balun transformers are used in test equipment, mixers, receivers, transmitters and antenna circuits Coverage from 1.8 to 30 MHz. Efficiencies in the high 90% range.
- 14. CONSTRUCTION AND USE OF BROADBAND TRANSFORMERS Technical Seminar Presentation 2004 N. SAI KIRAN KUMAR EE200118248 14 THANK YOU