object to deform. Force can also be described by intuitive concepts such as a push or pull. A force has both magnitude and direction‚ making it avector quantity. Capacitor A capacitor (originally known as condenser) is a passive two-terminal electrical component used to store energy in an electric field. The forms of practical capacitors vary widely‚ but all contain at least two electrical conductors separated by a dielectric (insulator). History In
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High Voltage Engineering Fundamentals High Voltage Engineering Fundamentals Second edition E. Kuffel Dean Emeritus‚ University of Manitoba‚ Winnipeg‚ Canada W.S. Zaengl Professor Emeritus‚ Electrical Engineering Dept.‚ Swiss Federal Institute of Technology‚ Zurich‚ Switzerland J. Kuffel Manager of High Voltage and Current Laboratories‚ Ontario Hydro Technologies‚ Toronto‚ Canada Newnes OXFORD AUCKLAND BOSTON JOHANNESBURG MELBOURNE NEW DELHI Newnes An imprint
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CHAPTER 1 INTRODUCTION 1.1 Background The majority of energy used in the world is the electrical energy which is generated‚ distributed and utilized in sinusoidal form. This type of energy production are called alternating current (AC) source. Due to the presence of different types of loads in a circuit‚ the phase difference or angle (θ) is form between the voltage and the current vector. Figure1 below shows the typical vector diagram of AC voltage and current. This angle (θ) is called the power
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powering the basic fire alarm circuit and its modified versions is shown above. Transformer T1 is a 230V primary‚ 12V secondary‚ 500mA step down transformer. D1 is a 1A bridge which performs the job of rectification. Capacitor C1 filters the rectifier output and C2 is the AC by-pass capacitor. IC1 (7809) is a 9V fixed positive voltage regulator. The output of the rectifier+filter section is
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motor in either XZ or YZ plane. Fig. 1 shows the block diagram of the stepper motor control system. The power supply section (in Fig. 2) consists of a stepdown transformer (7.5V AC‚ 1A)‚ bridge rectifier (comprising diodes D1 through D4)‚ filter capacitors (C1 and C2) and regulator IC 7805. We have used here an Atmel make low-power‚ high-performance‚ 8-bit CMOS microcontroller AT89C51 with 4 kB of Flash p rogrammable and erasable read-only memory (PEROM). It has a 128x8-bit internal RAM‚ 32 programmable
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International Conference On Industrial Engineering and Manufacturing ICIEM’10‚ May‚ 9-10‚ 2010‚ Batna‚ Algeria SINGLE-PHASE BOOST POWER FACTOR CORRECTOR L. RAHMANI Laboratoire d’Automatique de Sétif (LAS)‚ Université de Sétif‚ Faculté des Sciences de L’ingénieur‚ Département d’électrotechnique‚ Route de Bejaia‚ Sétif‚ Algérie‚ Lazhar_rah@yahoo.fr Abstract--This paper presents the analysis‚ a modeling approach to obtain a small-signal model‚ design and the digital implementation of a linear
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Henry Johnson‚ Demetrius Jackson‚ Bennie Chandler‚ Marcus Rice Parts List 3-Green LED’s Resistor 2-Red LED’s Resistor 5-330 Ohm Resistors 2-74175 OR Gate 3-1 k ohm Resistors 2-NO Push Buttons 2-555 Timers 1-0.01 uf Capacitor 1-0.1 uf Capacitor 1-10 k Ohm Resistor 1-22 k Ohm 1-1.0 M Ohm Information A counter uses flip-flops to “remember” the last count until the clock pulse occurs. A shift register can store several events in series depending on the length of the
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Abstract We can control power point show or media player through the swipe. Just swipe over the sensor to control it‚ the circuit has 2 sets of sensors for sensing the swipe. The sensors has an IR led with a photo diode. For media player show your hand over the sensor to play/pause the song. To stop the song show the hand over the sensor 1‚to play the next song just swipe the hand from right to left and to play previous song swipe the hand from right to left. The same swipe motion
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to the electric power network. Because most electrical systems were designed for linear voltage and current waveforms (i.e. nearly sinusoidal)‚ excessive nonlinear loads can cause serious problems such as overheating conductors‚ transformer and capacitor failures as well as malfunction of electronic equipment. The magnitudes of harmonics generated by the CFLs vary between manufacturers and between ranges of lamps from the suppliers. At present‚ no serious power quality problems have been reported
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GENERAL INSTRUCTIONS: A: The numerical are based on application of theory content. Attempt them in your physics notebook as practice assignment. B: Do all questions in sequence. UNIT –I: ELECTROSTATICS 1. Three identical charges each +q are placed at the corners of an equilateral triangle of side d cm. Calculate the force on a +ve charge +2q at the centroid of the triangle. 2. Force acting on a charged particle kept between the pair of plates‚ having equal and opposite charge‚ is F. If
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