...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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...Name: _Amogh Prabhakar____________ Date: Oct. 10, 2014___ CP: _____ Virtual Circuit Lab Learning Goals: Students will be able to understand Ohm’s Law. Students will be able to see the relationship between voltage, current, and resistance. Go to ⎝Battery-Resistor Circuit. Click on the green “Run Now” button. The simulation should look like the picture to the right. 1. Change the resistance and voltage. Observe what happens to the current. Note the relationship you observed between each of the following: (direct, inverse, none) a. resistance and current = _indirect_______________________ b. voltage and current = direct__________________________ Go to ⎝Ohm's Law. Click on the green “Run Now” button. The simulation should look like the picture to the right. 2. What is the current through a resistor with the following resistances? Let voltage = 6 V a. R = 100 ohms I = _60__ mA(current) b. R = 300 ohms I = 20____mA(current) 3. Now, determine the current through the wire with the following volts. Let resistance = 500 ohms a. Volts = 3 V I = 6___mA(current) b. Volts = 6V I = 12____mA(current) 4. Think about the formula (V=IR), does this make sense according to this formula? Explain! (Be sure to include the relationship between resistance and current, and the relationship between voltage and current in your answer) Yes, it...
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...Physics 122 Lab 7: Circuits II Abstract: The main objective of this experiment was to test and verify Kirchhoff’s two rules: the loop rule and junction rule in a complex circuit. The voltage and current of each of the six resistors in the circuit were measured using a DMM. These values were then used to calculate the resistance of each resistor. The calculated resistor values were compared to the measured DMM values and the nominal values. By doing so, Ohm’s Law was proved because the values were consistent. The second part of the experiment involved using the current and voltage values obtained in part 1 to prove Kirchhoff’s loop and junction rule. The results, although were not zero, complied with Kirchhoff’s two rules within experimental error supporting Kirchoff’s rules regarding the voltage and circuit in a closed DC circuit. Ruby Bahniwal Partner: Jesse Olson 2011-07-25 T.A. Ali Introduction: The purpose of this experiment was to learn how to assemble a circuit properly, Figure 1 below, using the equipment provided and to experimentally verify Kirchhoff’s rules by measuring the voltage or potential drop across each resistor along with the current for each branch in the circuit constructed. Electric circuits have the ability to direct and control the flow of electricity and the energy conveyed. It can be constructed using various combinations of batteries, resistors and capacitors. These circuits are found in common...
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...------------------------------------------------- Ohm's law From Wikipedia, the free encyclopedia This article is about the law related to electricity. For other uses, see Ohm's acoustic law. V, I, and R, the parameters of Ohm's law. Ohm's law states that the current through a conductor between two points is directlyproportional to the potential difference across the two points. Introducing the constant of proportionality, the resistance,[1] one arrives at the usual mathematical equation that describes this relationship:[2] where I is the current through the conductor in units of amperes, V is the potential difference measured across the conductor in units of volts, and R is the resistance of the conductor in units of ohms. More specifically, Ohm's law states that the R in this relation is constant, independent of the current.[3] The law was named after the German physicist Georg Ohm, who, in a treatise published in 1827, described measurements of applied voltage and current through simple electrical circuits containing various lengths of wire. He presented a slightly more complex equation than the one above (see History section below) to explain his experimental results. The above equation is the modern form of Ohm's law. In physics, the term Ohm's law is also used to refer to various generalizations of the law originally formulated by Ohm. The simplest example of this is: where J is the current density at a given location in a resistive material, E is the electric...
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...efficiently into other forms of energy. In the 21st century, electrical energy production, distribution, and application have become consumer driven. Today’s consumer utilizes electrical energy in all aspects of life, from cell phones and computers to refrigeration and heating and cooling systems, and even transportation. Electrical energy, depending on geographic location, is converted from mechanical energy, chemical energy, light energy, and thermo energy before it reaches the consumer. Regardless of the conversion process, electrical energy consists of three basic components: current, voltage, and resistance. Current is the net transfer of electric charge per unit of time. Voltage is the amount of work required to move a charge from one point to another. Resistance is the opposition to the flow of current. Understanding the relationship between current, voltage, and resistance allows engineers to design efficient, safe, and functional electrical circuits. Electrical circuits consist of the following components: an energy source to provide voltage, conductors to allow current travel, insulators to limit current travel, and a load. Electrical circuits provide an uninterrupted path for current travel and are broken into two distinct categories of design: series circuits and parallel circuits. Equipment * Engineering notebook * Calculator * PC with Internet (http://phet.colorado.edu/en/simulation/circuit-construction-kit-dc) * Simulation courtesy of: ...
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...¬¬¬¬¬¬Abstract Electrical circuits are described with mathematical expressions. Usually, it is possible to calculate the currents and voltages in a circuit by solving a set of equations, the calculations are required to design a safe circuit.and this is one reason why advanced mathematics is so important in the field of electrical engineering. The circuit equations can be determined using Ohm’s Law, which gives the relationship between voltage and current in a resistor (V=IR), and Kirchhoff’s Current and Voltage Laws, which govern the currents entering and exiting a circuit node and the sum of voltages around a circuit loop, respectively. Objective(s) The purpose of this experiment is to verify Ohm's Law using resistor in dc and ac circuits....
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...The objective of this lab is to learn to use resistors and how they are used in series and in parallel. A resistor is an electrical component that limits or regulates the flow of electrical current in an electronic circuit. Electrical current is the rate of charge flowing past a given point in an electric circuit, measured in coulombs/seconds known as amperes. We are using the Ohm’s law (V=IR, V is voltage, I is the current and R is the resistor) to calculate the current of the resistors and the voltage of the resistors. There are different kinds of currents and one that we are going to be using in this lab is direct current. Direct current is when the charge flows in only one direction around the circuit and in a alternating circuit is when the direction of the charge flows changes from moment to moment. When resistors are in series they look like this . When a resistor is in series and we are trying to find the resistance equivalent we use this formula R eq=R1+ R2 . A parallel resistor is when two or more resistors are connected in parallel and it looks like this.... To find the resistance equivalent in a parallel resistor is different than the series in parallel you use this formula, 1Req=1R1+1R2 also it can be simplify to this Req=R1R2R1+R2. All the words we are using in this lab we have learn in class and has been taught to us which will help us more and to understand better the lab. Resistor could be use in many different products we use in our daily lives like in...
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...between current and voltage for the resistor, as expected. Our experimental error for the factory versus actual resistance was only 4.77%. The resistance of the light bulb is not as linear as with the resistor. This is because the resistance changes when the light come on, as some of the energy is converted to heat in the filament. The critical point when the light first turns on is at O.456 Volts and you can see on the graph that the resistance begins to level off at this point. You can see the same point on the graph of current versus resistance because the line begins to curve at the corresponding critical point of 0.390 Amps. As the light gets brighter, more energy is lost as heat and the curve levels off even more. Conclusion: In the lab we measured resistance in a resistor and in a light bulb. We built a circuit and used an ammeter and a voltmeter to measure the current and the electric potential difference to measure resistance. The resistor has a linear relationship between current and resistance because resistance does not change as the current increases. However the light bulb is not linear because some energy is lost as heat in the filament when the light bulb comes on. Our experimental data confirms these hypotheses and you can see the point where the light bulb comes on and the line starts to curve on our graph. Lab Questions: 1. Electric resistance in materials is caused by energy being lost to heat when there are collisions with free electrons and atoms. This...
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...Lab #3: Controlling Currents 09/18/13 Objective- The first objective in this lab is to determine how a light bulb behaves in different circuit arrangements. The second objective investigates how the voltage across the light bulb varies with the amount of current through it. Finally, the last objective is to explore how the length of a wire affects resistance. Procedure- Activity 1 A) Measure the voltage across an open-circuit cell by connecting the positive terminal of the voltmeter to the positive terminal of the call and the negative terminal of the voltmeter to the negative terminal. The voltage across cell #1 is 1.462 V. The voltage across cell #2 is 1.455 V. B) Measure the voltage across two cells connected in a series. The voltage across two cells is 2.9 V. C) Connect the circuit as shown in the diagram below. Insert two D-cells into the circuit. D) What is the effect of rotating the knob on the device that is identified as a “Potentiometer”? Rotating the potentiometer adjusted the brightness of the light bulb. Activity 2 A) Set the multimeter to the 200/400 mA range. Connect the circuit as the same in activity one with the ammeter in the circuit. Set the second multimeter to the VDC scale and connect its leads across the bulb. B) Read the current that is flowing through the bulb. Measure the voltage across the bulb. Record both values in the data table below. C) Turn the knob of the potentiometer and increase...
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...Task 1: Task one was intended to build off of ideas implemented in the previous lab. More specifically formulating a V-I curve for the resistor circuit displayed in the prelab. Graph 1 shows the resulting V-I curve. Graph 1: V-I curve for the potentiometer. Like the previous lab, the signal was generated by a function generator and then sent through a potentiometer followed by a precision resistor in series. Figure 1 shows the LabView Block diagram that was used to record voltages of the two resistors. Figure 1: LabView Block diagram used to record voltages across the precision resistor and potentiometer. Because the resistance of the precision resistor was known to be 10Ω the recorded voltage was used to calculate the current using Ohm’s Law shown in equation 1. V=I*R Equation 1: Ohm’s law. Used to calculate the current. Task 2: Task two was designed to demonstrate how different sampling rates and different frequencies affect data and how it appears. In this section, the function generator was set to 5 Vpp with a frequency of 1000Hz and plugged into the compact DAQ module. Next the experiment was performed using five sampling rates (500, 1000, 2000, 3752, & 20000 ) with samples of 10, 40, 50, 200, and 2000. The LabView block diagram shown in figure 2 was responsible for collecting the mean and standard deviation of the amplitude and frequency. ...
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...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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...ECET 220 Week 2 Lab Answers ( graded ) Follow Below Link to Download Tutorial https://homeworklance.com/downloads/ecet-220-week-2-lab-answers-graded/ For More Information Visit Our Website ( https://homeworklance.com/ ) Email us At: Support@homeworklance.com or lancehomework@gmail.com Week 2 Lab Instructions Bipolar Junction Transistor – Biasing 1. Objectives • To analyze a normally biased BJT circuit comprising of a BJT and resistors and measure the circuit voltages between emitter, common, base, and collector. • To theoretically calculate and verify the circuit using Ohm’s Law, KCL and KVL. • Determine the voltage drop across the collector load resistance and measure the current passing through the emitter and collector resistors. 1. Equipment and Parts List Equipment: • IBM PC or compatible • DMM (digital multimeter) • Variable dc power supply Parts: Qty. Component Tolerance Band Wattage Rating, W 1 2N3904 Transistor 6 10 K Ω Resistor gold ¼ 1 Proto Board Hookup wires of different colors Software: MultiSim III. Procedure 1. Theoretical Analysis 1. Given the circuit in Figure 1, calculate the total resistance between the base and VCC in kΩ and the total collector resistance (combination of R3 and R4) in kΩ. Enter the values obtained in Table 1 on the worksheet. Figure 1 2. Given Figure 1, calculate the circuit voltages cited below entering the values in Table 2 on the worksheet...
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...ECET 220 Week 2 Lab Answers ( graded ) Follow Below Link to Download Tutorial https://homeworklance.com/downloads/ecet-220-week-2-lab-answers-graded/ For More Information Visit Our Website ( https://homeworklance.com/ ) Email us At: Support@homeworklance.com or lancehomework@gmail.com Week 2 Lab Instructions Bipolar Junction Transistor – Biasing 1. Objectives • To analyze a normally biased BJT circuit comprising of a BJT and resistors and measure the circuit voltages between emitter, common, base, and collector. • To theoretically calculate and verify the circuit using Ohm’s Law, KCL and KVL. • Determine the voltage drop across the collector load resistance and measure the current passing through the emitter and collector resistors. 1. Equipment and Parts List Equipment: • IBM PC or compatible • DMM (digital multimeter) • Variable dc power supply Parts: Qty. Component Tolerance Band Wattage Rating, W 1 2N3904 Transistor 6 10 K Ω Resistor gold ¼ 1 Proto Board Hookup wires of different colors Software: MultiSim III. Procedure 1. Theoretical Analysis 1. Given the circuit in Figure 1, calculate the total resistance between the base and VCC in kΩ and the total collector resistance (combination of R3 and R4) in kΩ. Enter the values obtained in Table 1 on the worksheet. Figure 1 2. Given Figure 1, calculate the circuit voltages cited below entering the values in Table 2 on the worksheet...
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...ACKNOWLEDGMENT The researchers would like to express their deepest gratitude to the following persons who extended their heartfelt support in making this thesis successful: First and for most, to Almighty God for giving them the wisdom and strength to complete and finish this particular study, for without Him, their design project would never reach its final form. Their beloved parents, brothers and sisters for their invaluable support that serves as our constant inspiration guiding them during difficult times of financial and moral crisis; Mrs. Karen Plaza, MSIT their research instructor for her remarkable assistance, patience and understanding in imparting her knowledge and expertise regarding research; Engr. Robert Bacarro, their research and technical adviser, for his inspiration and selfless sharing realistic ideas to acquire fulfillment of this scholastic task; Lastly, their friends for sharing their knowledge and ideas regarding theoretical aspect of the said design project. Abucejo, Jervic B. Antinopo, James Arbil E. Digamon, Rosie Gay S. ABSTRACT This study aimed to design a low cost “Laboratory...
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...A Pragmatic Introduction to the Art of Electrical Engineering Paul H. Dietz Version 1.0 - ©1998 Paul Henry Dietz - All rights reserved. A Pragmatic Introduction to the Art of Electrical Engineering i L ICENSE Rights and Obligations vii How it Works vii A Disclaimer viii C REDITS How Did We Get Here? ix A Book is Born ix And I Want to Thank All the Little People... x P ROLOGUE Electrical Engineering for Fun and Profit xi Cold Sandwiches, again? xi Electrical Engineering as Programming and Interfacing xii The Basic Stamp 2 xiii About This Book xiv C HAPTER 1 Getting Started with the BASIC Stamp 21 The Problem 1 What You Need to Know 1 What is a BASIC Stamp 2? 2 How Do I Wire it Up? 2 How Do I Get to the Software? 5 A First Example Program 5 A Second Example Program 6 ii A Pragmatic Introduction to the Art of Electrical Engineering C HAPTER 2 Lights and Switches 8 The Problem 8 What You Need to Know 8 What is Voltage? 9 What is Current? 10 What is an LED? 12 How Do I Interface a Switch? 16 What is a Seven Segment Display? 18 Where Do We Go Next? 20 C HAPTER 3 Maybe 21 The Problem 21 What You Need to Know 22 What is a Voltage Divider? 22 How Do I Solve More Complex Resistive Circuits? 24 Are There Any Tricks That Can Make This Easier? 27 What is an Independent Source and What is Superposition? 30 What is a Digital to Analog Convertor? 32 What’s Next? 33 C HAPTER 4 Guess the Number 34 The...
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