EE 1106 Lab 5
EE 1106 Lab 5 EE 1106 - 001
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This 7 page Bundle was uploaded by Kumar Jyoti on Sunday January 3, 2016. The Bundle belongs to EE 1106 - 001 at University of Texas at Arlington taught by Gregory K Turner in Fall 2015. Since its upload, it has received 75 views. For similar materials see ELECTRICAL ENGINEERING FRESHMAN PRACTICUM in Electrical Engineering at University of Texas at Arlington.
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Date Created: 01/03/16
EE1106 – Introduction to Electrical Engineering Practicum Lab Report Grading Rubric (To be attached as a coversheet to EVERY report) FORMATTING (see comments in graded report for more explanation): Formatting Evaluation Key (Lab 1, 2, 3, 4): 0 = Absent 1 = Extremely Lacking 2 = Poor 3 = Fair 4 = Good 5 = Excellent Formatting Evaluation Key (Lab 5 and all succeeding labs): 0 = Extremely Lacking 1 = Poor 2 = Fair 3 = Good 4 = Excellent 5 = Perfect Primary Structure: _____ Proper margins/spacing is used throughout the report (IEEE format) _____ Proper formatting of section titles and subtitles (IEEE format) _____ Proper font and font size (IEEE format) _____ Overall consistency of formatting throughout the report Figures/Tables: _____ Figures/tables are appropriately named and numbered (IEEE format) _____ Figures/tables are appropriately sized and spaced _____ Screenshots are neatly cropped and clear Spelling, Grammar, and Writing Style: _____ Spelling _____ Passive voice is used throughout the ENTIRE report _____ Sentence Structure _____ Paragraph Structure (IEEE format) _____ References (IEEE Format) CONTENT (see comments in graded report for more explanation): Content Evaluation Key: 0 = Absent 1 = Extremely Lacking 1 2 = Poor 3 = Fair 4 = Good 5 = Excellent _____ Abstract provides endtoend coverage of the objectives and purpose of the lab experiment _____ Introduction demonstrates a working understanding of major theoretical concepts required for the experiment _____ Procedure is sufficiently detailed and clearly describes all steps taken during the lab experiment _____ Results are sufficiently detailed and data is neatly organized _____ Discussion is a thoughtful analysis of all experimental results and data _____ Discussion demonstrates a working understanding of the purpose of the experiment performed _____ Conclusion sums up the overall accomplishments of the experiment _____ Conclusion sums up the benefits (to the student) of performing the experiment 2 Lab Report 5 Network Theorem Part 1 Kumar Aman Jyoti Electrical Engineering University of Texas at Arlington Arlington, Texas Kumar.firstname.lastname@example.org operating in the breakdown region. Conventional diodes and rectifiers never operate in the breakdown region, but the ABSTRACT: This paper is about learning how to represent Zener diode makes a virtue of it and can safely be operated at this point. circuit diagrams on a Bread Board using circuit element as to make an actual circuit and observe its behavior. Apart from this we will also learn having specified values for resistors and voltage from the source, how the My DAQ is used as a digital multimeter to measure the resistance on each resistor as well as the voltage from the source. We were able to compare the calculated values with the measured values. Additionally, the last circuits was created on Multisim, and their characteristics were determined using a multimeter on the program. The Zener Diode I.INTRODUCTION II. PROCEDURE The purpose of this lab is to gain familiarity with several important Electrical Engineering theorems. The experiments performed in this lab involves the Superposition theorem The experiments involve the theory and applications covered which states thatfor a linear system the response (voltage or in the theorems of superposition, thevenin’s equivalent and current) in any branch of a bilateral linear circuit having Zener diode operation. The first what we started was we more than one independent source equals the algebraic sum briefly learned and understood the circuit diagrams on the of the responses caused by each independent source acting breadboard of part A mentioned in the Lab Handout for Lab alone, where all the other independent sources are replaced 5. After that we drew the exact circuit in the Breadboard. by their internal impedances. We will also learn how a Completing the circuit carefully we measured and recorded semiconductor device called a Zener diode can be used as a the resistance of each resistor and the voltage from the power source. Then we found out observing the circuits that is there reasonable alternative to a voltage source. a node exists or not which will make us easy as since there Zener Diode A Zener diode is a diode which allows are each row connected after the gap. As you can see in the current to flow in the forward direction in the same manner diagram in figure 1 that one end of each of the three resistors are connected at a node which is identified as node B. as an ideal diode, but also permits it to flow in the reverse Furthermore we went on connecting the wires with respect to direction when the voltage is above a certain value known as the diagram to the posts, which received the voltage from the the breakdown voltage "Zener voltage”. The device consists voltage source. This voltage is transferred with the banana of a reverse biased, highly doped, pn junction diode cables with the alligator clips tightly fastened on the posts. 3 An important point should always kept on mind that if a power sources are active. At last of this experiment we breadboard does not have four posts the alternative way to do calculated and measured the Values as also shown in the this will be by clipping two alligator clips to one post. It is table. the reason that the circuit the negative end of Eg 1and the positive end of Eg 2are connected at a node. Keep in mind Part C of the lab was done in multisim as instructed. The also that by doing this we are not shorting out the power aim of this experiment part C was to work with the Zener supply because we are connecting the negative end on one diode by determining the breakdown voltage from the power supply to the positive end of another, not connecting voltage source and also studying the changes in terminal the vice versa. characteristics at the time when the voltage from the power source is being altered. In the multisim to access Zener diodes, we first selected the ‘Zener’ family under the ‘Diode’ group. In the following window that will pop up there appears many options of Zener diodes in which we selected the 1N749A Zener diode. As shown in the figure we drew the circuit diagram correctly representing on multisim that we altered the voltage supplied by double clicking on the power source and typing range of values. After doing that we observed that each time the voltage from the power source is being altered and then we measured and recorded the terminal characteristics of the Zener diode. Lastly accumulating these ideas we drew the Graph of IV Figure 1: Circuit A shows the two power sources having a common characteristics. node. Now apply the superposition theorem to calculate the total voltage for VAB by adding the values calculated from specified component values and then record in the table. Also calculate the total voltage for VAB by adding the values III. GRAPHS AND TABLES calculated from measured component values and record again. With EG1 and EG2 turned on and operating we measured the total voltage VAB directly from N4, and calculated the difference in percent (%) between the total VAB measured from N4 (3di) and the total VAB calculated with specified component values (3ci) as the basis, and record in Table 1(b). After completing Part A we eventually moved on to second part part B in which there were no voltage source connected to the nodes as a result we with the help of a bread board with three posts, we tried to clip the alligator cables for as much of the voltage sources as we can and then added another wire to the respective node and carefully clipped it to Figure 2: Bread Board the wire ensuring that there is a firm contact between the alligator clip and the insulation of the wire. The same process was repeated of shorting out each power source and measuring the voltage of the points A and B and points C and D to prove the superposition theorem. After done with this we built the circuit in the as to derive the calculated measurements of points of A and B and points C and D when each power source is shorted out one by one and when both 4 Table 1(a) – Measured value of the components Table 4 – Voltage and Current Values Table 1(b) N4 Voltages table Table 2 – N5 Voltages Table 3 – Stimulate Value for Part 3 Figure 6: The graph of IV characteristics from the data in the table in above. 5 IV. DISCUSSION V. CONCLUSION While performing procedures for experiments on a collection After doing this lab we were able to learn about some terms of resistive networks we learned different types of methods which was used further to derive and use it to understand and theorems too. These experiments involve the theory and how to measure and calculate the terminal characteristics applications covered in the lecture on superposition, between two nodes on a circuit with two power sources – thevenin’s equivalent and Zener diode operation. Superposition. We also learned about the Zener diode A Zener diode is a diode which allows current to flow in the Suppose I have a collection of parts with the same nominal forward direction in the same manner as an ideal diode, but also permits it to flow in the reverse direction when the value and some tolerance, say 50 Ohm 1% tolerance resistors. What distribution of actual component values can I voltage is above a certain value known as the breakdown expect The parts follow a normal distribution with standard voltage. Also we saw that by altering the voltage supplied in deviation 0.5 Ohms 95% of parts will be within 0.5 Ohms of the last circuit we were able to find the range of values for the nominal value 100% of parts will be within 0.5 Ohms of the breakdown Voltage. the nominal value . This the reason why we get differences between calculated and measured values. V. REFERENCES  Lab 5 handout from Lab wiki page  Google Images  Wikipedi 6
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