Preparation and Ferroelectric Characterization of Calcium doped Barium Titanate ceramics ABSTRACT Barium Titanate (BT) is widely used in electro-optical and electroceramic industry because of its ferroelectric‚ thermoelectric and piezoelectric properties when it assumes the tetragonal structure. In addition to its Lead free composition‚ its perovskite structure allows variation of ionic size and small displacement of atoms that lead to the distortion of the structure which has a profound
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DIGITAL TRANSMISSION Definition: Transmittal of digital signals between two or more points in a communications system. Advantages of Digital Transmission • Noise immunity • Ease of processing and combining • Ease of measuring and evaluating • Disadvantages of Digital Transmission • Requires more bandwidth • Necessitates encoding and decoding circuitry • Requires precise time synchronization • Incompatible with older analog transmission systems Pulse Modulation Pulse Modulation
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Factors that need to be considered when installing cable: • Jacket • Flexibility • Capacitance Aspects of proper design: • A properly designed structured cabling system is based around components or wiring units. An example of a wiring unit is a story of an office building. All the work locations on that floor are connected to a single wiring closet. All of the wiring units can be combined together using backbone cables as part of a larger system. • The transition point is where one type of
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AC Circuits. Oscilloscope Arjun Patel Group: 2 Partner: Hirbod B. Partner: Wonyoung J. PHY 114 Section 87725 TA: Hank Lamm November 3rd 2011 Abstract: The main goal of this experiment to Investigate the sine wave AC signal from signal generator using the scope and determine the relationships between the rms value and the amplitude of the voltage as well as the period and the frequency of the signal. The following are the results of the lab: T= 10-3seconds‚ Vo=1.4V ‚ 2% discrepancy
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MESFET * ThMESFET = Metal Semiconductor Field Effect Transistor = Schottky gate FET. * e MESFET consists of a conducting channel positioned between a source and drain contact region. * The carrier flow from source to drain is controlled by a Schottky metal gate. * The control of the channel is obtained by varying the depletion layer width underneath the metal contact which modulates the thickness of the conducting channel and thereby the current. * The key advantage of the
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EG1108: Electrical Engineering Part 2: Application Examples Ben M. Chen Professor of Electrical and Computer Engineering National University of Singapore Office: E4‐06‐08 Phone: 6516‐2289 Email: bmchen@nus.edu.sg ~ http://www.bmchen.net EG1108 PART 2 ~ PAGE 1 BEN M. CHEN‚ NUS ECE Course Outline 1. Introduction to Electrical Engineering Introduction to some practical electrical engineering examples. 2. Magnetic Circuits and Transformers Principles of mutual inductance and
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The Volt Count Alessandro Giuseppe Antonio Anastasio Gerolamo Umberto Volta was the father of the volt. He was born in Italy. He made the first cell in the 1800s. The cell that he made was not really a battery‚ but it was the most advanced attempt of making a battery in his time‚ it produced a steady electrical current‚ but did not work well over time; it was called the Voltaic pile. The voltaic pile was made of two electrodes of zinc and copper and sulphuric acid as the electrolyte. His name
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2012-13 financial that is Rs 500 crores higher than that of the existing fiscal. 2. The company has decided to make an investment of Rs 2‚343 crore in the coming financial (2012-13)‚ 76% increase in capital expenditure over FY2012 to boost capacitance. 3. The company has decided to pay Rs 232 crore as 18% interim dividend for the year 2012-13. National Aluminium Company Limited is listed with Bombay stock exchange and National stock exchange. BSE: 532234‚ NSE: NATIONALUM Company’s
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EDC-UNITV Question&answer UNIT-V SMALL SIGNAL LOW FREQUENCY BJT MODEL 1. List out the advantages of h-parameters. 1. h-parameters are real numbers at audio frequencies. 2. These are easy to measure. 3. h-parameter can also be obtained from the transistor static characteristic curves. 4. h-parameters are convenient to use in circuit analysis and design. 5. A set of h-parameters is specified for many transistors by the manufacturers 2. Draw the h-parameter circuit and its equivalent circuit in CE
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[2] electric field E is deflected in a circular path of radius r. Prove that 4. The distance between the plates of a parallel plate capacitor is d. A metal plate of thickness (d/2) is placed between the plates. What will be the effect on the capacitance? [2] 5. Keeping the voltage of the charging source constant. What would be the percentage change in the energy stored in a parallel plate capacitor if the separation between its plates were to be decreased by 10%? [3] 6. Two identical
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