...2013 Lab 5: Inductors and How to Light White LEDs from 1 Volt Quick Links * Goals of this Lab * Prelab * Lab Experiments Goals of this Lab * Wind a toroidal inductor. * Measure the inductance and the resistance of an inductor. * Use an inductor to step up the voltage of a battery. * Build a circuit for lighting up white LEDs from a 1 Volt battery. This lab is a group activity. The current group assignments are given here. One lab report per group needs to be turned in on D2L. The responsibilites for the successful completion of the lab consist of three parts: The prelab, the actual lab measurements, and the writing of the report. The report will be graded according to three criteria: Correctness, completion, and clarity. On the cover page you must clearly state which group member had the main responsibility for the prelab, for the lab measurements, and for the report writing. All group members need to be knowledgeable for all three parts, but each member has a specific role in the group. The responsibilities must be rotated for future labs so that each group member will have experienced all three roles. Prelab An inductor is a passive device that can store energy in its magnetic field. Two examples of inductors (solenoid on the left, toroid on the right) are shown in the figure below. The i-v relationship for an inductor is: Compare this to the i-v relationship for a capacitor: We say that inductors and capacitors are duals of...
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...|Lesson Synopsis: | This unit develops an understanding of electrostatics by the use of demonstrations, simulations, and modeling. The general theme is that the current model of matter consisting of electrically neutral atoms composed of charged particles is integral to the understanding of electrical forces. The lesson begins with traditional activities of charging objects by friction and comparing electrostatic forces to magnetostatic forces. The traditional experiments are explained in terms of the model of an atom, and the “attract and repel force rules” are explored and expanded. Devices to create, store, and measure charge are utilized in experiments. The formal theory of Coulomb’s law is introduced, and problems are assigned utilizing that theory. Elements of the historical development of electrostatics and planetary model of the atom are researched, and students have an assignment describing contributions of historically important scientists. Additional concepts of electric fields, potential difference, and properties of conductors and insulators are developed through experiment, demonstration, and discussion. TEKS: |P.5 |The student knows the nature of forces in the physical world. The student is expected to: | |P.5A |Research and describe the historical development of...
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...ENGINEERING DEPATMENT Senior Project Final Report - 121 Design and Implementation for Maximum Power Point Tracking for Photovoltaic Generators Advisor: Dr. Chokri, Belhadj Ahmed Mufti 200717070 Ahmad Al-Shammari 200736450 Abdullah Al-Shehri 200739630 Abdullah Al-Omran 200832100 Abdulillah Al-Saaedi 200832820 15th of December, 2012 ACKNOWLEDGEMENTS We would like to express our gratitude towards all the people who have contributed their precious time and efforts to help us in completing this project. We would like to thank Dr. Chokri Belhaj Ahmed, our Project Supervisor for his guidance, support, motivation and encouragement throughout the period of this project. We would like to thank Dr. Alaa El-Din Hussein Ahmed, for his precious time and efforts to help us in completing this project. We would also like to thank the Department of Electrical Engineering for providing us with a good environment, facilities and the equipment to complete this project. We are also grateful to the lab technician Mr. Edmana Abbas for support and help. ABSTRACT Solar energy has become an alternative source of energy. Several researches have been focused on the photovoltaic (PV) systems efficiency development and the availability of this technology. Today, PV power generation has gained more consequence due to its numerous advantages such as fuel free, no maintenance and environmentally green. This report gives a smart approach for the improvement...
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...CEEN 3250 Communication Systems Dr. Jang LAB REPORT EXPERIMENT #11: Amplitude Modulation (AM) using an Operational Transconductance Amplifier Rance Fredericksen LAB Partners Whouji Lo Ryan Leudders Date: April 3, 2007 University of Nebraska – Lincoln Peter Kiewit Institute OBJECTIVE 1. To become familiar with the 3080E operational transconductance amplifier (OTA) and how its variable gain feature makes it ideam for use as an AM modulator. 2. To observe typical AM waveforms that exhibit undermodulation, overmodulation, and 100% modulation. 3. To understand how a peak detector functions to extract the original intelligence from an AM waveform. PRELAB None. PROCEDURE First, we built the circuit shown here: Figure 11.1. AM Circuit Schematic. In order for the non-inverting input of the Operational Amplifier to be exactly ZERO VOLTS, the variable resistor (shown on the left-hand side of Figure 11.1) was set to 5.6k/4.4k. The switch shown on the bottom left corner of the diagram was set initially to position 1 (ground). Once this circuit was constructed, we applied a 60mVp-p sine wave at the input. At the output (Vo), we observed a sinusoid, and we again adjusted the variable resistor to obtain a ZERO VOLT DC OFFSET. We then moved the switch to POSITION 2. Once in position 2, we took measurements of amplifier gain while adjusting the variable resistor (on the right-hand side of Figure 11.1) between its extremes...
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...University of North Carolina at Charlotte Department of Electrical and Computer Engineering Laboratory Experimentation Report Name: Langston Tucker Date: September 28, 2014 Course Number: ECGR 2155 Section: L05 Experiment Titles: Experiment Number: 2, 3, & 4 Lab 2: Basic Circuit Elements Lab 3: DC Voltage and Current Sources Lab 4: Series Circuit Characteristics Lab Partners: James Henderson and Joshua Sayles Equipment List: Objective: Experiment 2 The purpose of this lab was to familiarize ourselves with basic circuit elements. Those being, resistors, capacitors, inductors. Furthermore using basic calculations we determined the dissipated power in our elements. Experiment 3 The purpose of this...
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...------------------------------------------------- Lab Final Unit 11 Lab Final: Voltage Regulator with Constant Current Limiting (PORTFOLIO) Scope and Intention of the Project: The Lab Final Project is a self-directed project with specific requirements provided. You will be given a design task which utilizes a standard circuit in the textbook. You will apply knowledge that has been acquired in lecture, assignments, and previous labs. Task: Your task is to design, simulate, build and test a voltage regulator with constant current limiting as shown in Fig. 11-7 on page 559, Chapter 12 in the textbook. In addition to providing a circuit which operates to the specified functionality, you will submit a project report with required format and contents. D1 D1 This circuit is to be built according to the following specifications: * Input Voltage Range: + 9 V DC to +15 V DC * Q1 and Q2: 2N3904 Transistor * D1: 1N4733 Zener Diode * R1 = 1.0 kΩ, R2 = 10 kΩ, R3 = 10 kΩ, R4 = 1.0 Ω * Nominal Output Voltage: + 10 V DC * Max. Output Current: 500 mA Required Test Data: 1. Line regulation for input voltage changes from +9 V to +15 V 2. Load regulation for load changes from open circuit to 1000 Ohm load resistance 3. Graph of output voltages for at least 5 different input voltages, using a 150 Ohm load resistor 4. (Y-axis scaled for output voltage, x-axis scaled for resistive load) 5. Graph of output voltages for at least 5 different...
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...Siti Nur Syamilah Binti Mansur 51117211069 L04-T01 DISCUSSION This Lab Practical 2 on design linear DC power supply is to identify 4 main components and the signal waveform as the result of the circuit. By looking to the θJA comparison values heat sink is identified. On Task 2, circuit has been constructing to have the output at transformer, rectifier, filter, ic regulator and load. Voltage dropped at each component that measure such as Vp-p, Vrms, and Vdc input and output. Task 3, using multisim software as medium to simulate the circuit and measure the value of output voltage at every component. The simulation by multisim was attached with this report. CONCLUSION As the conclusion, we investigate and analyze the operation of DC linear power supply. Moreover, we had simulated the circuit using S=Engineering Software (multisim). Furthermore, we construct and test the power supply circuit during the lab class. Linear power supplies rarely include voltage regulation so there should only be used to power boards that contain a voltage regulator. The output voltage at less than full load will exceed the rated voltage by as much as a factor √2. Filter capacitors in some supplies are on the small side, so additional filtering may be needed. Switch power supply will operate at close to their rated voltage over the load range, so they may be used to supply boards requiring regulated voltage. Switching power supplies may also be used power boards which have an integrated voltage...
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...EE2031 Circuit and Systems Design Lab Mini-Project Report Voice Disguiser Presented by: Friday Room 3 Group 7 Wang Ke (A0105276J) Wu Jianxiao (A0099910W) 1.Introduction 1.1 Aim During the 6 hands-on individual labs before this mini project, we have learnt the design and implementation of filter and oscillator, together with applied characterization of different components. The objective of Mini-Project was for students to demonstrate their innovative design skills and implement knowledge learnt in lectures to real-life product design. Therefore, we aimed to integrate what we learnt in individual labs into one single product, which is a Voice Disguiser that can solve practical problems of witness protection. 1.2 Motivations and Inspiration According to Maslow’s Hierarchy of Needs, safety is the second most basic need of human being. However, in some lawsuit trail and media interviews, the safety of witnesses is at risk when they come forward to disclose the truth. A study of Columbia University shows that 71% of witnesses said they feel threatened by the offenders (Brendan & Rajiv, 2007). Therefore, it is necessary to use a Voice disguiser to protect witnesses from being recognized based on their originally identifiable voice. And this issue inspires me to design a voice disguiser. After consulting lab TAs and lecturer, we found that this idea is feasible based on limited lab conditions and time constrains 1.3 List of Materials No. 1 3 4 5 ...
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...course outline for future transfer credit applications. A fee may be charged for additional copies. This course outline is available in alternative formats upon request. ETEC 103 CENTENNIAL COLLEGE Electric Circuits 1 Course Description Electric Circuits 1 introduces students to the fundamental principles and theorems of D.C. (direct current) and A.C. (alternate current) series and parallel resistive circuits. In this theory-only course, students will also be introduced to series and parallel circuit combinations in circuit simulation software. This software will be used in both ETET101 and ETEC103 to investigate the behavior of electrical components, test circuits and prove circuit theorems. Capacitors and Inductors in DC circuits will be introduced. The practical lab applications of these topics are covered in the course ETEC101 Electronics Shop Practices. Students are recommended to take ETEC101 concurrently. Program Outcomes Successful completion of this and other courses in the program culminates in the achievement of the Vocational Learning Outcomes (program outcomes) set by the Ministry of Training, Colleges and Universities in the Program Standard. The VLOs express the learning a student must reliably demonstrate before graduation. To ensure a meaningful learning experience and to better...
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...between these factors when we design a power converter. Main aims in modern power electronic systems are to deliver the power with maximum efficiency, minimum cost and weight in an integrated circuit. Power electronics has a significant role in different industries when power processing is required such as in computers, telecommunications, motor drives, cars and alternative energy systems. In general, circuit elements in most electrical systems are resistors, capacitors, magnetic elements and transistors as shown in Fig. 2. Some of these components may be used in low or high power systems. In most electronic circuits in which efficiency is not a main concern, circuit elements consist of resistors, capacitors and transistors. It is difficult to include magnetic elements into integrated circuits as they are large in size compared to capacitors and resistors. The transistors may operate in linear or switched mode as they transfer low power signals. In power converters, efficiency is a main concern. Power circuits consist of capacitors, magnetic elements and transistors in switched mode. Resistors and power switches in linear mode are not used in most power circuits due to significant losses generated by current through these components which...
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...NUTRITION 121 HUMAN NUTRITION LABORATORY BACKGROUND AND METHODS MODULE #1 BODY COMPOSITION Late Labs: 10 point deduction! A report submitted >1 week late, will receive 0 points for the lab!! Written and edited by: Karon Felten and Nutrition 121 TA’s With Special Thanks to: Chris Pritsos Ph.D. Nutrition Department Chairman ABSTRACT: In nutrition, there are many factors that influence an individual’s health and body weight, such as heredity, food selection, eating behaviors, and physical activity. Scale weight is not always a good indicator of body fat, lean mass, body water or overall health (1). This laboratory experience will give students the opportunity to conduct physical assessments by evaluating body weight and body composition. To determine body weight and body composition, techniques such as bioelectrical impedance analysis (BIA), body mass index (BMI), waist circumference, wrist circumference for determining frame size, and a scale will be utilized. Students will also evaluate their own risk for cardiovascular disease and assess cardiovascular health in volunteers by measuring heart rate, filling out a heart disease risk score form, and estimating oxygen consumption and energy expenditure through a technique known as the Queens College Three-Minute Step Test. BACKGROUND: Your body is made up of the six essential nutrients: water, fat, protein, carbohydrates and various vitamins and minerals. Many factors can influence an individual’s...
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...Instructions: * Complete Part 1 of Lab 3. Once you have completed Lab 3-Part 1, complete the Lab Report. * Answer the questions and transcribe/transfer test results recorded in the lab’s tables to the tables provided. * Complete Part 2 of Lab 3. Once you have completed Lab 3-Part 2, complete the Lab Report. * Answer the questions and transcribe/transfer test results recorded in the lab’s tables to the tables provided. * Complete Part 3 of Lab 3. Once you have completed Lab 3-Part 3, complete the Lab Report. * Answer the questions and transcribe/transfer test results recorded in the lab’s tables to the tables provided. ------------------------------------------------- Part 1- Comparators and the Schmitt Trigger Theory: 1. What is the purpose of a comparator? A comparator is a switching device that provides a high or low output depending on which of the inputs is bigger. 2. What type of circuit uses hysteresis to avoid rapid switching due to noise? Schmitt Trigger Preparation: 3. Describe the transfer curve of a basic comparator circuit. The horizontal axis represents the input and the vertical axis represents the output Test Procedure: 4. Transcribe the comparator waveforms from Plot 22-1 to the Plot below. Plot 22-1: Comparator waveform 5. Describe how the threshold voltage changes the comparator output. As V+ increases, the output pulse width decreases. When V- decreases, the output pulse width increases...
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...Section 0 COURSE CODE COURSE TITLE UNITS / TYPE EEC201L CIRCUITS 2 LABORATORY 1 / LAB Section 1 INSTITUTION MISSION STATEMENT The FEU Institute of Technology is a premier technology educational institution in the Philippines. INSTITUTION VISION STATEMENT The FEU Institute of Technology commits itself to be an institution of quality education and relevant partnership with the larger community, producing competent and principled professionals who will contribute significantly to the betterment of society. DEPARTMENT MISSION STATEMENT The Electrical and Electronics Engineering (EEE) Department commits itself to provide students with industry-grade and outcomes-based education in electrical, electronics and communications engineering that will allow the students to develop a greater sense of professional responsibility, social awareness and high competitiveness in industry or in graduate work. DEPARTMENT VISION STATEMENT The Electrical and Electronics Engineering (EEE) Department envisions itself as a center of excellence, leadership, and an internationally recognized institution in electrical and electronics engineering education and technology. Section 2 PROGRAM OUTCOMES a. ability to apply knowledge of mathematics and science to solve engineering problems b. ability to design and conduct experiments, as well as to analyze and interpret data c. ability to design a system, component, or process to meet desired needs within realistic constraints such as economic, environmental...
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...PROJECT REPORT ON SANGUINOSCOPE Under the guidance of: Submitted by: Miss. Navdeep Kaur Harmanpreet Kaur (2009ECA1157) Bhawna Sharma (2011ECA1464) Anuradha Sharma (2011ECA1457) Aabha Bhandari (2011ECA1109) Shahbaaz Singh (2011ECA1453) CANDIDATE DECLARATION We hereby certify that the work which is being presented in this Project entitled “SANGUINOSCOPE” by our group in partial fulfilment of requirement for the MAJOR PROJECT submitted in Electronics and Communication Department. PSPICE is an authentic record of my own work carried under the supervision of “MISS. NAVDEEP KAUR” .The matter presented in this project has not been submitted by us in any other University/Institute for the award of MAJOR PROJECT. Candidate Name: HARMANPREET KAUR (2009 ECA 1157) BHAWNA SHARMA (2011 ECA 1464) ANURADHA SHARMA (2011 ECA 1457) AABHA BHANDARI (2011 ECA 1109) SHAHBAZ SINGH (2011 ECA 1453) This is to certify that the above statement made by the...
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...ET 1410 – Integrated Circuits Project Report 555 Timer as a Voltage Controlled Oscillator (VCO) Student: Earl Ebbert Student ID: 18970599 ITEM | PAGE | Title Page | 1 | Contents | 2 | Introduction | 2 | Circuit Schematic Diagram: (Fig. 1) | 3 | 555 Timer as a Voltage Controlled Oscillator (VCO) Parts List: (Fig.2) | 3 | LM555CM Datasheet Information: (Fig 3.) | 4 & 5 | 741 Op amp Information: (Fig 4.) | 6 | Formula List: (Fig 5) | 7 | Data Table: Measurements and Calculations (Fig 6) | 7 | Frequency Counter Simulation Readings: (Fig. 7) | 8 | Oscilloscope - XSC1 Measurement Diagrams: (Fig. 9): | 8 | Conclusion and Recommendations: | 9 | References and Citations: | 9 | Introduction: Oscillators are circuits that generate a periodic waveform to perform timing, control, or communication functions. Oscillators require a form of positive feedback, where a portion of the output signal is fed back to the input in a way that causes it to reinforce itself and thus sustain a continuous output signal. This voltage-controlled oscillator (VCO) Circuit uses the 555 timer as the main component and is configured as an astable multivibrator, switch is able to serve as a free-running nonsinusoidal oscillator that produces a pulse waveform on its output. An astable multivibrator is just a timing circuit whose output oscillates between 'low' and 'high' continuously, in effect generating a train of pulses. The 555 timer is a versatile integrated...
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