maximum output current of 200mA. To reduce the ripple factor to a value less than 0.1%. Apparatus 120-volt rms 60Hz input 60 ohm to 1k ohm load resistor 10 to 1 step-down transformer FWB bridge Voltage Regulator 2 100nF capacitors 10uFcapacitor 4.7 uF Capacitor Overview The goal of this experiment was to construct a power supply that would convert a 120-volt 60 Hz input ‚such as that received from a wall socket‚ to a 12-volt dc voltage output with a ripple factor less than 0.1% making
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The University of Nottingham Faculty of Engineering School of Electrical and Electronics Engineering Project Title Supercapacitor/Battery hybrid system for DC motor control pulsed power circuits: Demonstration of Elapsed TIME using Airborne Remote Controlled Helicopters AUTHOR LEE HONG WEE MODERATOR DR. KENNETH ANG SUPERVISOR PROF. SRS PRABAHARAN DATE April 18‚ 2011 Third year project proposal submitted in partial fulfillment of the requirements of the degree of Bachelor
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effect of equivalent series resistance (ESR) of an output capacitor on the performance of a constant -on-time(COT)-controlled buck converter is studied and a pulse bursting phenomenon is revealed. It indicates that the ESR of the output capacitor is one of the key factors causing pulse bursting phenomenon in COT-controlled buck converters‚ and the critical ESR is derived via. It is pointed out that ‚ when the ESR of the output capacitor is smaller than the critical ESR ‚pulse bursting phenomenon
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purpose of this lab course is for you to master the use of electronic test equipment. The devices we will be using include DC power supplies‚ breadboards‚ digital multi-meters ”DMM”‚ oscilloscope and a function generator‚ as well as some resistors‚ capacitors and inductors‚ so we can have something to measure on. By the end of this experiment you should be able to tell how to use the equipment to measure voltage‚ current resistance‚ inductance‚ capacitance‚ frequency‚ period‚ rms voltage‚ peak-peak
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[pic] PROJECT REPORT BASIC ELECTRICAL & ELECTRONICS LAB (EE-103) ACKNOWLEDGEMENT This project report could not have been prepared‚ if not for the help and encouragement from various people. Hence‚ for the same reason we would like to thank our guide and teacher CHRISTY A. KOSHY. It was for his support that we Got proper guidelines for preparing this project. Submitted to:- CHRISTY A. KOSHY DECLARATION We are the student of ME-Y declares
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This is marked with a ’-’ sign at the MIC on the circuit board printed overlay. To save space all the resistors must be inserted standing up on one end. Be careful to get the transistors around the correct way. Note three points: - the two 100n capacitors on the PCB have 0.2" and 0.1" spacing. We have put in components with the correct spacing for ease of construction. - we have supplied prewound‚ pre-soldered enamel 6 turn & 8 turn wire coils. The legs should solder directly to the pads of the PCB
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touch the PCB inside. You may need to release barbs or tabs to release the PCB from the plastic case. 3 Remove the battery. 4 Locate the large capacitor‚ most commonly a black cylindrical item with 2 leads coming out of one end - short the leads together with the end of the screwdriver but be careful!It can shock you if the capacitor is charged. It will make a loud bang and shower sparks and may do so several times. 5 Locate the charge switch on the front of the PCB‚ it should
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battery-inductor hybrid pulsed-power supply boasts several advantages over pulsed alternators‚ as inductors are static and relatively easy to cool. Inductors are potentially more energy dense than capacitors‚ making a battery-inductor hybrid pulsed-power supply an attractive alternative to capacitor-based pulsed-power supplies. The opening switch has been a major obstacle in previous inductive store projects‚ but in simulation‚ a new circuit topology—the Slow TRansfer of Energy Through Capacitive
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Warning 9.2 Electrical Standards 9.3 Earth-fault protection 9.4 Generator Options 9.5 Using 3-Phase Induction Motors as Single-Phase Generators. 9.6 Electronic Load Control 9.7 Alternatives to load control 9.8 Selection and Sizing of Generator‚ Capacitors‚ Cable and Protection Equipment 9.9 Installation and Connection 9.2 Electrical Standards National electrical standards should be followed. In some countries‚ special standards for micro hydro and/or isolated village electrification have been
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avoid errors. I. INTRODUCTION It is well established that capacitor is the element that can store charge and its ability to store charge can be measured in terms of capacitance in farads. We need capacitor in our daily life such as to remove the undesired DC component in amplifier output‚ to improve power factor of generated power in transmission systems as well as to store energy in a camera flash circuit. A capacitor forms an important part of various real life applicatiions such
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