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Transcript

THE ELECTRIC CIRCUITS AND ELECTRONICS LABORATORY The Electric Circuits and Electronics Laboratory OBJECTIVE Realization of a conceptual design is probably one of the most fulfilling experience of every engineering student. In the advent of computer technology, the implementation of an electrical or electronic systems design has been revolutionized through the use of various computer simulation and hardware interface tools. Students should not only learn the theory and concept, but in order to become competitive and marketable, they should also know the tools and methods on how they can implement their design using the latest technology. The Electric Circuits and Electronics laboratory aims to fill in the gap between conceptual theory and practical implementation of various electrical and electronics systems covered on the lecture component of each course. The Electric Circuits and Electronics Laboratory is located in room G213, it supports the following laboratory courses in the Electrical Engineering Program, ELEC 201 (Electric Circuits Laboratory) ELEC 203 (Electric Circuits II Laboratory) ELEC 231 (Fundamentals of Electronics Laboratory) ELEC 334 (Electronics Engineering Laboratory) MAJOR EQUIPMENT IN THE LABORATORY: 1. National Instrument ELVIS ELVIS is an acronym which stands for Educational Laboratory Virtual Instrumentation Suite. The unit is a highly versatile form of equipment. Students can develop their own graphical user interface for measuring electrical parameters such as voltage and current at various points on the actual circuit in order to generate characteristic curves for the circuit’s response like VTC plot, I-V plot, Bode plot during the course of their actual laboratory work. 2. K and H ETS - 7000 Digital and Analog Training System This trainer provides the basic needs of students during the experiment. It includes fixed and variable dc voltage sources, function generator, potentiometer, breadboard, pulse and data switches, speaker and digital and LED displays 3. GW Instek Digital Storage Oscilloscopes These instrument allows students to display and measure time base waveforms. Alternatively, XY plots, cursor function and automatic measurement of various electrical parameters are just some of its features. 4. BK Precision Arbitrary Waveform Generators The laboratory is equipped with the following: Computer Interface Adapter NI ELVIS bundled with Labview 8.2 software. Various models of oscilloscopes, function generators and arbitrary waveform generators. Basic measuring devices such as portable and bench top digital multi-meters Analog and digital training kits with breadboard. Multisim 8 software is installed on all computers for electrical and electronic systems simulation. Discrete components such as resistors, capacitors, inductors, analog and digital integrated circuits. These instruments can also perform the same function as function generators. As an added feature, they allow students to generate any waveform by reproducing a previously generated waveform or to generate waveform based on a characteristic equation. 5. Extech- Multiview 110, True RMS Multimeter- 430,GW Multimeter-GDM354A) Robust and indispensible instruments for basic measurements of resistance, ac and dc voltages and currents. They are widely used by students for developing basic skills on electrical and electronic measurements. CORE TEACHING TOPICS: 1. Appropriate methods for measuring various electrical parameters. 2. Verification of ohm’s law, KVL, KCL to series or parallel circuits. 3. Confirmation of mesh analysis, nodal analysis, source transformation, superposition theorem, Thevenin’s theorem, Norton’s theorem and maximum power transfer theorem for both ac and dc sources. 4. Verification of characteristic equations of step and source free transient response first and second order circuits. 5. Characterization of different semiconductor devices such as diodes, BJT’s and FET’s. 6. Verification of time response plots of half wave and full-wave rectifiers, clipping and clamping circuits. 7. Application of operational amplifiers for linear and non-linear circuits such as negative feedback amplifiers, instrumentation amplifiers, voltage to current converters, phase shifters, active filters, relaxation oscillators and waveform generators. LICENSED SOFTWARE 1. Multisim 8.0 This software is used extensively on all laboratory activities. They allow students to connect the circuit virtually which enables them to verify the operation of the circuits and at the same it allows them to correct their mistakes without causing undue harm on themselves or the equipments. 2. Labview 8.2 The accompanying software of NI ELVIS that allows students to design their own graphical user interface in conjunction with the hardware features offered by ELVIS such as acquiring and producing analog signals in order to verify the voltage transfer characteristic curve, dc sweep, frequency response or to characterize the performance of electrical and electronic circuits. The Department of Electrical Engineering College of Engineering Qatar University P.O. Box 2713, Doha, Qatar Tel: 4403 – 4200, Fax: 4403 - 4201 http://www.qu.edu.qa/engineering/electrical/