f14m1s_elct7.fm - 1 The University of Toledo EECS:3400 Electronocs I Electronics I Problems Points Total 15 Was the exam fair?
|
|
- Edwina Bailey
- 5 years ago
- Views:
Transcription
1 f4ms_elct7.fm - Electronics I Midterm I Examination Problems Points Total 5 Was the exam fair? yes no
2 f4ms_elct7.fm - 2 Problem 4 points For full credit, mark your answers yes, no, or not for all the given choices! For full credit, mark your answers yes, no, or not in all the given choices!. In a pn-junction diode: x majority charge carriers on the p-side of the junction are free electrons, x minority charge carriers on the p-side of the junction are holes, x majority charge carriers on the n-side of the junction are holes, x minority charge carriers on the n-side of the junction are free electrons,.2 The electric field inside the depletion region of a silicon pn-junction diode is directed: x from the donor to the acceptor ions, x from the p-region to the n-region of the pn-junction, x from the acceptor to the donor ions, x from the cathode to the anode side of the pn-junction.3 The height of the potential barrier of the pn-junction is, x unaffected by the application of a reverse bias voltage to the junction, x increased by the application of a forward bias voltage to the junction, x decreased by the application of a forward bias voltage to the junction, x decreased by the application of a reverse bias voltage to the junction..4 Under reverse bias, the reverse current of a silicon pn-junction diode is given by -i D =I S +I L, where I S is the reverse saturation current, and I L is the reverse leakage current of the diode. With e denoting the base of natural logarithms, and assuming that T=(T 2 -T ) o K>0, the nonlinear temperature dependence of I L can be mathematically described by, T x I L (T 2 ) = I L (T ) 2 5, x I L (T 2 ) = I L (T ) e T, T x I, L (T 2 ) = I L (T ) 2 0 T x I L (T. 2 ) = I L (T ) e 0 9/26/4
3 f4ms_elct7.fm - 3 Problem 2 5 points Given is the nonlinear electric circuit model shown in Figure 2., which includes a pn-junction diode. i D R =.2 MΩ V DD = 30V i D V DD + - v D (a) R V R (T) T o =293 o K V R (T o ) = V R0 = 0V V Z = 28V V DR = 0.7V -V Z 0 V DR (b) v D Figure 2. A nonlinear circuit model containing a pn-junction diode. (a) The circuit model. (b)the diode s piece-wise-linear model. The pn-junction diode in the circuit model of Figure 2. is described by the following properties: (a) diode is accurately represented by its large-signal piece-wise-linear "constant voltage drop" model shown in Figure 2.(b); (b) temperature dependence of the diode s reverse leakage current I L is described by: I L doubles for every 0 o K increase in diode s temperature. Problem statement For the electric circuit model of Figure 2., demonstrate an ability to:. indicate the positive reference directions of the diode s current flow and voltage drop; 2. determine the value of the voltage V R (T ) = V R, to which the voltage V R in the circuit of Figure 2. will change when the diode s temperature changes to the value T =273K. Solution Hint # For full credit, give answers to all questions, prepare all required circuit diagrams, write all equations for which the space is reserved, and show all symbolic and numerical expressions whose evaluation produces the shown numerical results. An explicit demonstration of understanding the following solution steps is expected. 2. Show in the electrical model of Figure 2.(a) the positive reference directions for diode s voltage v D and current i D. 2.2 Calculate the diode s voltage V D0 at temperature T o. Show your calculation in the space reserved for equation (2-0). At temperature T o, the voltage drop across the resistor is known; therefore by KVL, V D0 = V R0 - V DD = 0-30 = -20V > -28V = -V Z (2-0) 9/26/4
4 f4ms_elct7.fm Based on the result of calculation in part 2., indicate the operating region of the diode at temperature T o by checking the conditions on all three lines below, x the diode is forward biased, x the diode is reverse biased, x the diode is in its breakdown region. 2.4 Calculate the value of I L0, the diode s reverse leakage current at temperature T o. Show your calculation in the space reserved for equation (2-). That the diode in the circuit of Figure 2. is reverse biased, but not in the breakdown region at temperature T o, has been established above. Therefore, the current which creates the voltage drop V R0 in the circuit of Figure 2. is the reverse leakage current of the diode. Ohm s law provides the reverse leakage current I L0 at temperature T o, I L0 = V R0 = R = = 8.3µA (2-) 2.5 Calculate T, the change in temperature between T o at which the reverse leakage current of the diode has been calculated under 2.3 above, and at the given temperature T. Show your calculation in the space reserved for equation (2-2). T= T - T o = = -20K (2-2) 2.6 Determine n 0K, the number of decades of degrees Kelvin in the calculated temperature increase T. Show your calculation in the space reserved for equation (2-3). This calculation is straight forward. n 0K = T 0-20 = 0 = -2 (2-3) 2.7 Determine the ratio of the diode s reverse leakage currents at temperatures T and T o. Show your calculation in the space reserved for equation (2-4) By the diode s property (a), and by the calculated temperature increase, I L = I L0 2 n 0K (2-4) 9/26/4
5 f4ms_elct7.fm Calculate the reverse leakage current of the diode at temperature T. Show your calculation in the space reserved for equation (2-5) Solving equation (2-4) for I L yields, I L = 2 n 0K I L0 = = 2.08µA (2-5) 2.9 Determine the value of the voltage V R =V R (T ). Show your calculation in the space reserved for equation (2-6). V R = R I L = = 2.5V (2-6) I L = 2.µA V R = 2.5V 9/26/4
6 f4ms_elct7.fm - 6 Problem 3 6 points Given is an electric circuit model with two diodes, shown in Figure 3.. Both diodes in the circuit of R D 2 R 2 V M - V + D V V N V M = 8V V N =7V R =2kΩ R 2 =kω Figure 3. A circuit with ideal diodes. Figure 3. are accurately modeled by the large-signal piecewise-linear "ideal diode" model. Problem statement For the electric circuit model of Figure 3., demonstrate an ability to:. apply the piece-wise linear models of non linear circuit elements in the process of analysis of nonlinear circuits, 2. apply the large signal method of analysis to nonlinear electric circuits containing diodes in order to determine: - values of the voltages V and V 2 whose positive reference directions are indicated in the circuit model of Figure values of the positive reference direction currents of the diodes in the circuit model of Figure 3.. Hint # For full credit, give answers to all questions, prepare all required circuit diagrams, write all equations for which the space is reserved, and show all symbolic and numerical expressions whose evaluation produces the shown numerical results. Solution An explicit demonstration of understanding the following solution steps is expected. 3. Make an educated guess as to the bias conditions of the two diodes in the circuit of Figure 3., and show your guess by checking the conditions on all four lines below, x the diode D is forward biased, x the diode D is reverse biased, x the diode D 2 is forward biased, x the diode D 2 is reverse biased. 9/26/4
7 f4ms_elct7.fm Construct the linear circuit which results when the ideal diodes in the circuit of Figure 3. are replaced by their models for the biasing condition guessed in Section 3., and draw the electrical model of the constructed circuit in the space reserved for Figure 3.2 Substituting the ideal diodes D and D 2 by their equivalent circuit models for the states guessed in Section 3., gives the circuit of Figure 3.2 (by the definition of an ideal diode, a forward biased diode has an internal resistance of zero Ohms, and the internal resistance of a reverse biased diode has the infinite value). R A 2 C 2 R 2 V M A V D2 +- V v V + 2 C D - V N Figure 3.2 The circuit with ideal diodes replaced by their models for the biasing conditions vguessed D in Section To check the validity of the guesses made in Section 3., perform an analysis of the circuit of Figure 3.2 to determine the voltage across the diodes which were guessed reverse biased, and to determine the current through the diodes which were guessed forward biased. Hint #2 For a meaningful process of performing the analysis, the positive reference directions of these voltages/currents must be shown in the circuit model of Figure 3.2. Failure to show these positive reference directions reduces the credit for this part to 0.. V A = -V M = -8V (3.3-) V A2 = V A = -V M = -8V (3.3-4) V C = 0V (3.3-2) V C2 = V N = 7V (3.3-5) V D = V A - V C = -8-0 = -8V (3.3-3) V D2 = V A2 - V C2 = -8-7 = -5V (3.3-6) Both diodes in the circuit have been guessed reverse biased, and expressions (3.3-) through (3.3-6) show that their anodes are at a lower potential than their cathodes, so that both diodes are indeed reverse biased in the circuit of Figure Compare the result of the analysis performed in Section 3.3 with the guesses made in Section 3., to make a conclusion as to whether the bias conditions of both diodes were guessed correctly. Indicate your conclusion by appropriate checks on both lines below, x the biasing condition of both diodes has been guessed correctly, x the biasing condition of one, or more diodes has been guessed incorrectly. 9/26/4
8 f4ms_elct7.fm - 8 Since, now, booth guesses of Section 3., have been shown valid for the equivalent piece-wise linear circuit of Figure 3.2, their validity for the circuit in Figure 3. has also been confirmed. If the biasing condition of at least one diode is incorrect, repeat the steps of Sections 3. through 3.4 using the free space on the opposite page. 3.5 When the biasing conditions of all diodes have been guessed correctly, determine the values of the voltages V and V2 which are indicated in the circuit of Figure 3.. Show your calculation in the space reserved for equations (3-2). After the guesses which led to the construction of the circuit of Figure 3.2 have been shown correct, all results of the analysis of the circuit of Figure 3.2 are also valid for the circuit of Figure 3.. Therefore, by equations (3.3-) through (3.3-6), V = V A = -8V V 2 = V C2 = 7V V = -8V V 2 = 7V (3-2) 3.6 When the biasing conditions of all diodes have been guessed correctly, determine the values of the currents flowing through diodes D and D 2 in the circuit of Figure 3.. Show your calculation in the space reserved for equations (3-3). After the guesses which led to the construction of the linearized circuit model of Figure 3.2 have been proven correct, all results of the analysis of the circuit of Figure 3.2 are also valid for the circuit model of Figure 3.. Therefore, since both diodes are reverse biased, their currents have the value of zero Amperes, I D = 0A I D2 = 0A (3-3) 9/26/4
Electronics I. Midterm #1
The University of Toledo Section s7ms_elct7.fm - Electronics I Midterm # Problems Points. 4 2. 5 3. 6 Total 5 Was the exam fair? yes no The University of Toledo s7ms_elct7.fm - 2 Problem 4 points For full
More informationElectronics I. Midterm #1
The University of Toledo Section f6ms_elct7.fm - Electronics I Midterm # Problems Points. 4 2. 5 3. 6 Total 5 Was the exam fair? yes no The University of Toledo f6ms_elct7.fm - 2 Problem 4 points For full
More informationElectronics I. Midterm #1
EECS:3400 Electronics I s5ms_elct7.fm - Section Electronics I Midterm # Problems Points. 4 2. 5 3. 6 Total 5 Was the exam fair? yes no EECS:3400 Electronics I s5ms_elct7.fm - 2 Problem 4 points For full
More informationElectronics I. Midterm #1
The University of Toledo s6ms_elct7.fm - Electronics I Midterm # Problems Points. 4 2. 5 3. 6 Total 5 Was the exam fair? yes no The University of Toledo s6ms_elct7.fm - 2 Problem 4 points For full credit,
More informationEE/COE 152: Basic Electronics. Lecture 3. A.S Agbemenu. https://sites.google.com/site/agbemenu/courses/ee-coe-152
EE/COE 152: Basic Electronics Lecture 3 A.S Agbemenu https://sites.google.com/site/agbemenu/courses/ee-coe-152 Books: Microelcetronic Circuit Design (Jaeger/Blalock) Microelectronic Circuits (Sedra/Smith)
More informationLaboratory No. 01: Small & Large Signal Diode Circuits. Electrical Enginnering Departement. By: Dr. Awad Al-Zaben. Instructor: Eng.
Laboratory No. 01: Small & Large Signal Diode Circuits Electrical Enginnering Departement By: Dr. Awad Al-Zaben Instructor: Eng. Tamer Shahta Electronics Laboratory EE 3191 February 23, 2014 I. OBJECTIVES
More informationLec (03) Diodes and Applications
Lec (03) Diodes and Applications Diode Models 1 Diodes and Applications Diode Operation V-I Characteristics of a Diode Diode Models Half-Wave and Full-Wave Rectifiers Power Supply Filters and Regulators
More informationKOM2751 Analog Electronics :: Dr. Muharrem Mercimek :: YTU - Control and Automation Dept. 1 1 (CONT D) DIODES
KOM2751 Analog Electronics :: Dr. Muharrem Mercimek :: YTU - Control and Automation Dept. 1 1 (CONT D) DIODES Most of the content is from the textbook: Electronic devices and circuit theory, Robert L.
More informationMicroelectronic Circuits, Kyung Hee Univ. Spring, Chapter 3. Diodes
Chapter 3. Diodes 1 Introduction IN THIS CHAPTER WE WILL LEARN the characteristics of the ideal diode and how to analyze and design circuits containing multiple ideal diodes together with resistors and
More informationChapter #3: Diodes. from Microelectronic Circuits Text by Sedra and Smith Oxford Publishing
Chapter #3: Diodes from Microelectronic Circuits Text by Sedra and Smith Oxford Publishing Introduction IN THIS CHAPTER WE WILL LEARN the characteristics of the ideal diode and how to analyze and design
More information2) The larger the ripple voltage, the better the filter. 2) 3) Clamping circuits use capacitors and diodes to add a dc level to a waveform.
TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. 1) A diode conducts current when forward-biased and blocks current when reverse-biased. 1) 2) The larger the ripple voltage,
More information2 MARKS EE2203 ELECTRONIC DEVICES AND CIRCUITS UNIT 1
2 MARKS EE2203 ELECTRONIC DEVICES AND CIRCUITS UNIT 1 1. Define PN junction. When a p type semiconductor is joined to a N type semiconductor the contact surface is called PN junction. 2. What is an ideal
More informationAnalog Electronic Circuits
Analog Electronic Circuits Chapter 1: Semiconductor Diodes Objectives: To become familiar with the working principles of semiconductor diode To become familiar with the design and analysis of diode circuits
More informationLecture 2 p-n junction Diode characteristics. By Asst. Prof Dr. Jassim K. Hmood
Electronic I Lecture 2 p-n junction Diode characteristics By Asst. Prof Dr. Jassim K. Hmood THE p-n JUNCTION DIODE The pn junction diode is formed by fabrication of a p-type semiconductor region in intimate
More informationDigital Integrated Circuits A Design Perspective. The Devices. Digital Integrated Circuits 2nd Devices
Digital Integrated Circuits A Design Perspective The Devices The Diode The diodes are rarely explicitly used in modern integrated circuits However, a MOS transistor contains at least two reverse biased
More informationCh5 Diodes and Diodes Circuits
Circuits and Analog Electronics Ch5 Diodes and Diodes Circuits 5.1 The Physical Principles of Semiconductor 5.2 Diodes 5.3 Diode Circuits 5.4 Zener Diode References: Floyd-Ch2; Gao-Ch6; 5.1 The Physical
More informationElectronic Circuits I. Instructor: Dr. Alaa Mahmoud
Electronic Circuits I Instructor: Dr. Alaa Mahmoud alaa_y_emam@hotmail.com Chapter 27 Diode and diode application Outline: Semiconductor Materials The P-N Junction Diode Biasing P-N Junction Volt-Ampere
More informationEC T34 ELECTRONIC DEVICES AND CIRCUITS
RAJIV GANDHI COLLEGE OF ENGINEERING AND TECHNOLOGY PONDY-CUDDALORE MAIN ROAD, KIRUMAMPAKKAM-PUDUCHERRY DEPARTMENT OF ECE EC T34 ELECTRONIC DEVICES AND CIRCUITS II YEAR Mr.L.ARUNJEEVA., AP/ECE 1 PN JUNCTION
More informationDiscuss the basic structure of atoms Discuss properties of insulators, conductors, and semiconductors
Discuss the basic structure of atoms Discuss properties of insulators, conductors, and semiconductors Discuss covalent bonding Describe the properties of both p and n type materials Discuss both forward
More informationGeorgia Institute of Technology School of Electrical and Computer Engineering. Midterm Exam
Georgia Institute of Technology School of Electrical and Computer Engineering Midterm Exam ECE-3400 Fall 2013 Tue, September 24, 2013 Duration: 80min First name Solutions Last name Solutions ID number
More informationHomework Assignment 04
Question 1 (Short Takes) Homework Assignment 04 1. Consider the single-supply op-amp amplifier shown. What is the purpose of R 3? (1 point) Answer: This compensates for the op-amp s input bias current.
More informationProject 6 Capacitance of a PN Junction Diode
Project 6 Capacitance of a PN Junction Diode OVERVIEW: In this project, we will characterize the capacitance of a reverse-biased PN diode. We will see that this capacitance is voltage-dependent and we
More informationPN Junction Diode Table of Contents. What Are Diodes Made Out Of?
PN Junction iode Table of Contents What are diodes made out of?slide 3 N-type materialslide 4 P-type materialslide 5 The pn junctionslides 6-7 The biased pn junctionslides 8-9 Properties of diodesslides
More informationCHAPTER 1 DIODE CIRCUITS. Semiconductor act differently to DC and AC currents
CHAPTER 1 DIODE CIRCUITS Resistance levels Semiconductor act differently to DC and AC currents There are three types of resistances 1. DC or static resistance The application of DC voltage to a circuit
More information6. Bipolar Diode. Owing to this one-direction conductance, current-voltage characteristic of p-n diode has a rectifying shape shown in Fig. 2.
33 6. Bipolar Diode 6.1. Objectives - to experimentally observe temperature dependence of the current flowing in p-n junction silicon and germanium diodes; - to measure current-voltage characteristics
More informationChapter 1: Semiconductor Diodes
Chapter 1: Semiconductor Diodes Diodes The diode is a 2-terminal device. A diode ideally conducts in only one direction. 2 Diode Characteristics Conduction Region Non-Conduction Region The voltage across
More informationBJT. Bipolar Junction Transistor BJT BJT 11/6/2018. Dr. Satish Chandra, Assistant Professor, P P N College, Kanpur 1
BJT Bipolar Junction Transistor Satish Chandra Assistant Professor Department of Physics P P N College, Kanpur www.satish0402.weebly.com The Bipolar Junction Transistor is a semiconductor device which
More informationUnless otherwise specified, assume room temperature (T = 300 K).
ECE 3040 Dr. Doolittle Homework 4 Unless otherwise specified, assume room temperature (T = 300 K). 1) Purpose: Understanding p-n junction band diagrams. Consider a p-n junction with N A = 5x10 14 cm -3
More informationDiodes CHAPTER Rectifier Circuits. Introduction. 4.6 Limiting and Clamping Circuits. 4.2 Terminal Characteristics of Junction Diodes 173
CHAPTER 4 Diodes Introduction 4.1 4.5 Rectifier Circuits 165 The Ideal Diode 166 4.2 Terminal Characteristics of Junction Diodes 173 4.3 Modeling the Diode Forward Characteristic 179 4.4 Operation in the
More information55:041 Electronic Circuits
55:041 Electronic Circuits Chapter 1 & 2 A. Kruger Diode Review, Page-1 Semiconductors licon () atoms have 4 electrons in valence band and form strong covalent bonds with surrounding atoms. Section 1.1.2
More informationCircle the one best answer for each question. Five points per question.
ID # NAME EE-255 EXAM 1 September 11, 2001 Instructor (circle one) Talavage Gray This exam consists of 16 multiple choice questions and one workout problem. Record all answers to the multiple choice questions
More informationElectronics The basics of semiconductor physics
Electronics The basics of semiconductor physics Prof. Márta Rencz, Gábor Takács BME DED 17/09/2015 1 / 37 The basic properties of semiconductors Range of conductivity [Source: http://www.britannica.com]
More informationTHERMIONIC AND GASEOUS STATE DIODES
THERMIONIC AND GASEOUS STATE DIODES Thermionic and gaseous state (vacuum tube) diodes Thermionic diodes are thermionic-valve devices (also known as vacuum tubes, tubes, or valves), which are arrangements
More informationCHAPTER 8 The PN Junction Diode
CHAPTER 8 The PN Junction Diode Consider the process by which the potential barrier of a PN junction is lowered when a forward bias voltage is applied, so holes and electrons can flow across the junction
More informationITT Technical Institute. ET215 Devices 1. Unit 7 Chapter 4, Sections
ITT Technical Institute ET215 Devices 1 Unit 7 Chapter 4, Sections 4.1 4.3 Chapter 4 Section 4.1 Structure of Field-Effect Transistors Recall that the BJT is a current-controlling device; the field-effect
More informationsemiconductor p-n junction Potential difference across the depletion region is called the built-in potential barrier, or built-in voltage:
Chapter four The Equilibrium pn Junction The Electric field will create a force that will stop the diffusion of carriers reaches thermal equilibrium condition Potential difference across the depletion
More information1) A silicon diode measures a low value of resistance with the meter leads in both positions. The trouble, if any, is
1) A silicon diode measures a low value of resistance with the meter leads in both positions. The trouble, if any, is A [ ]) the diode is open. B [ ]) the diode is shorted to ground. C [v]) the diode is
More informationDiode conducts when V anode > V cathode. Positive current flow. Diodes (and transistors) are non-linear device: V IR!
Diodes: What do we use diodes for? Lecture 5: Diodes and Transistors protect circuits by limiting the voltage (clipping and clamping) turn AC into DC (voltage rectifier) voltage multipliers (e.g. double
More informationLAB IV. SILICON DIODE CHARACTERISTICS
LAB IV. SILICON DIODE CHARACTERISTICS 1. OBJECTIVE In this lab you will measure the I-V characteristics of the rectifier and Zener diodes, in both forward and reverse-bias mode, as well as learn what mechanisms
More informationTerm Roadmap : Materials Types 1. INSULATORS
Term Roadmap : Introduction to Signal Processing Differentiating and Integrating Circuits (OpAmps) Clipping and Clamping Circuits(Diodes) Design of analog filters Sinusoidal Oscillators Multivibrators
More informationCHAPTER 8 The pn Junction Diode
CHAPTER 8 The pn Junction Diode Consider the process by which the potential barrier of a pn junction is lowered when a forward bias voltage is applied, so holes and electrons can flow across the junction
More informationElectro - Principles I
The PN Junction Diode Introduction to the PN Junction Diode Note: In this chapter we consider conventional current flow. Page 11-1 The schematic symbol for the pn junction diode the shown in Figure 1.
More informationEDC Lecture Notes UNIT-1
P-N Junction Diode EDC Lecture Notes Diode: A pure silicon crystal or germanium crystal is known as an intrinsic semiconductor. There are not enough free electrons and holes in an intrinsic semi-conductor
More informationIntrinsic Semiconductor
Semiconductors Crystalline solid materials whose resistivities are values between those of conductors and insulators. Good electrical characteristics and feasible fabrication technology are some reasons
More informationPhysics 281 EXPERIMENT 7 I-V Curves of Non linear Device
Physics 281 EXPERIMENT 7 I-V Curves of Non linear Device Print this page to start your lab report (1 copy) Bring a diskette to save your data. OBJECT: To study the method of obtaining the characteristics
More informationChapter 1: Diode circuits
Analog Electronics Circuits Nagamani A N Lecturer, PESIT, Bangalore 85 Email nagamani@pes.edu Chapter 1: Diode circuits Objective To understand the diode operation and its equivalent circuits To understand
More informationLecture (06) Bipolar Junction Transistor
Lecture (06) Bipolar Junction Transistor By: Dr. Ahmed lshafee ١ Agenda BJT structure BJT operation BJT characteristics ٢ BJT structure The BJT is constructed with three doped semiconductor regions One
More informationDiodes. Introduction. Silicon p-n junction diodes. Structure
Diodes ntroduction A diode is a two terminal circuit element that allows current flow in one direction only. Diodes are thus non-linear circuit elements because the current through them is not proportional
More informationElectronic Circuits I - Tutorial 03 Diode Applications I
Electronic Circuits I - Tutorial 03 Diode Applications I -1 / 13 - T & F # Question 1 A diode can conduct current in two directions with equal ease. F 2 When reverse-biased, a diode ideally appears as
More informationLecture -1: p-n Junction Diode
Lecture -1: p-n Junction Diode Diode: A pure silicon crystal or germanium crystal is known as an intrinsic semiconductor. There are not enough free electrons and holes in an intrinsic semi-conductor to
More informationElectronic Devices 1. Current flowing in each of the following circuits A and respectively are: (Circuit 1) (Circuit 2) 1) 1A, 2A 2) 2A, 1A 3) 4A, 2A 4) 2A, 4A 2. Among the following one statement is not
More informationAnalysis of diode. 2-Analysis of diode on paper- We can study behaviour of diode on paper in two ways.
Analysis of diode Analysis of diode means study of response of diode for different applied voltages. We can analyse diode in three ways. 1) Analysis of diode in laboratory 2) Analysis of diode on paper
More informationUNIT 3: FIELD EFFECT TRANSISTORS
FIELD EFFECT TRANSISTOR: UNIT 3: FIELD EFFECT TRANSISTORS The field effect transistor is a semiconductor device, which depends for its operation on the control of current by an electric field. There are
More informationPHYS 3050 Electronics I
PHYS 3050 Electronics I Chapter 4. Semiconductor Diodes and Transistors Earth, Moon, Mars, and Beyond Dr. Jinjun Shan, Associate Professor of Space Engineering Department of Earth and Space Science and
More informationDiodes and Applications
Diodes and Applications Diodes and Applications 2 1 Diode Operation 2 2 Voltage-Current (V-I) Characteristics 2 3 Diode Models 2 4 Half-Wave Rectifiers 2 5 Full-Wave Rectifiers 2 6 Power Supply Filters
More informationREV NO EXPERIMENT NO 1 AIM: To study the PN junction diode characteristics under Forward & Reverse bias conditions. APPARATUS REQUIRED:
KARNAL INSTITUTE OF TECHNOLOGY & MANAGEMENT KUNJPURA, KARNAL LAB MANUAL OF ------- SUBJECT CODE DATE OF ISSUE: SEMESTER: BRANCH: REV NO EXPERIMENT NO 1 AIM: To study the PN junction diode characteristics
More information55:041 Electronic Circuits
55:041 Electronic Circuits Chapter 1 & 2 A. Kruger Diode Review, Page-1 Semiconductors licon () atoms have 4 electrons in valence band and form strong covalent bonds with surrounding atoms. Section 1.1.2
More informationEXPERIMENT 10: SCHOTTKY DIODE CHARACTERISTICS
EXPERIMENT 10: SCHOTTKY DIODE CHARACTERISTICS AIM: To plot forward and reverse characteristics of Schottky diode (Metal Semiconductor junction) APPARATUS: D.C. Supply (0 15 V), current limiting resistor
More informationSemiconductor Devices Lecture 5, pn-junction Diode
Semiconductor Devices Lecture 5, pn-junction Diode Content Contact potential Space charge region, Electric Field, depletion depth Current-Voltage characteristic Depletion layer capacitance Diffusion capacitance
More information3A.1. Lecture 3A Semiconductors. Semiconductor Structure
3A.1 Lecture 3A Semiconductors Semiconductor structure. ptype semiconductor. ntype semiconductor. The pn junction. The pn junction characteristic (diode vi characteristic). Diode models. The Halleffect
More informationCHAPTER 8 The PN Junction Diode
CHAPTER 8 The PN Junction Diode Consider the process by which the potential barrier of a PN junction is lowered when a forward bias voltage is applied, so holes and electrons can flow across the junction
More informationChapter 2. Diodes & Applications
Chapter 2 Diodes & Applications The Diode A diode is made from a small piece of semiconductor material, usually silicon, in which half is doped as a p region and half is doped as an n region with a pn
More information6. Bipolar Diode. Owing to this one-direction conductance, current-voltage characteristic of p-n diode has a rectifying shape shown in Fig. 2.
36 6. Bipolar Diode 6.1. Objectives - To experimentally observe temperature dependence of the current flowing in p-n junction silicon and germanium diodes; - To measure current-voltage characteristics
More informationElectron Devices and Circuits (EC 8353)
Electron Devices and Circuits (EC 8353) Prepared by Ms.S.KARKUZHALI, A.P/EEE Diodes The diode is a 2-terminal device. A diode ideally conducts in only one direction. Diode Characteristics Conduction Region
More informationFIELD EFFECT TRANSISTOR (FET) 1. JUNCTION FIELD EFFECT TRANSISTOR (JFET)
FIELD EFFECT TRANSISTOR (FET) The field-effect transistor (FET) is a three-terminal device used for a variety of applications that match, to a large extent, those of the BJT transistor. Although there
More informationUNIVERSITY OF NORTH CAROLINA AT CHARLOTTE. Department of Electrical and Computer Engineering
UNIVERSITY OF NORTH CAROLINA AT CHARLOTTE Department of Electrical and Computer Engineering Experiment No. 2 - Semiconductor Diodes Overview: In this lab session students will investigate I-V characteristics
More informationOFCS OPTICAL DETECTORS 11/9/2014 LECTURES 1
OFCS OPTICAL DETECTORS 11/9/2014 LECTURES 1 1-Defintion & Mechanisms of photodetection It is a device that converts the incident light into electrical current External photoelectric effect: Electrons are
More informationDownloaded from
Question 14.1: In an n-type silicon, which of the following statement is true: (a) Electrons are majority carriers and trivalent atoms are the dopants. (b) Electrons are minority carriers and pentavalent
More informationAE103 ELECTRONIC DEVICES & CIRCUITS DEC 2014
Q.2 a. State and explain the Reciprocity Theorem and Thevenins Theorem. a. Reciprocity Theorem: If we consider two loops A and B of network N and if an ideal voltage source E in loop A produces current
More informationTransistor fundamentals Nafees Ahamad
Transistor fundamentals Nafees Ahamad Asstt. Prof., EECE Deptt, DIT University, Dehradun Website: www.eedofdit.weebly.com Transistor A transistor consists of two PN junctions formed by sandwiching either
More informationLABORATORY 8 DIODE CIRCUITS
LABORATORY 8 DIODE CIRCUITS A solid state diode consists of a junction of either dissimilar semiconductors (pn junction diode) or a metal and a semiconductor (Schottky barrier diode). Regardless of the
More information5.1 BJT Device Structure and Physical Operation
11/28/2004 section 5_1 BJT Device Structure and Physical Operation blank 1/2 5.1 BJT Device Structure and Physical Operation Reading Assignment: pp. 377-392 Another kind of transistor is the Bipolar Junction
More informationPart II. Devices Diode, BJT, MOSFETs
Part II Devices Diode, BJT, MOSFETs 49 4 Semiconductor Semiconductor The number of charge carriers available to conduct current 1 is between that of conductors and that of insulators. Semiconductor is
More informationBASIC ELECTRONICS ENGINEERING
BASIC ELECTRONICS ENGINEERING Objective Questions UNIT 1: DIODES AND CIRCUITS 1 2 3 4 5 6 7 8 9 10 11 12 The process by which impurities are added to a pure semiconductor is A. Diffusing B. Drift C. Doping
More informationEC6202- ELECTRONIC DEVICES AND CIRCUITS UNIT TEST-1 EXPECTED QUESTIONS
EC6202- ELECTRONIC DEVICES AND CIRCUITS UNIT TEST-1 EXPECTED QUESTIONS 1. List the PN diode parameters. 1. Bulk Resistance. 2. Static Resistance/Junction Resistance (or) DC Forward Resistance 3. Dynamic
More informationFINALTERM EXAMINATION Fall 2009 PHY301- Circuit Theory (Session - 2) Time: 120 min Marks: 70 Question No: 1 ( Marks: 1 ) - Please choose one Charge of 2c and 5c will attract each other repel each other
More informationIENGINEERS- CONSULTANTS LECTURE NOTES SERIES ELECTRONICS ENGINEERING 1 YEAR UPTU. Lecture-4
2 P-n Lecture-4 20 Introduction: If a junction is formed between a p-type and a n-type semiconductor this combination is known as p-n junction diode and has the properties of a rectifier 21 Formation of
More information3.2 Terminal Characteristics of Junction Diodes (pp )
8/7/004 3_ Terminal Characteristics of Junction iodes blank.doc /6 3. Terminal Characteristics of Junction iodes (pp.47-53) + v i HO: The Junction iode Curve HO: The Junction iode Equation A. The Forward
More informationChapter 8. Field Effect Transistor
Chapter 8. Field Effect Transistor Field Effect Transistor: The field effect transistor is a semiconductor device, which depends for its operation on the control of current by an electric field. There
More informationQ1. Explain the construction and principle of operation of N-Channel and P-Channel Junction Field Effect Transistor (JFET).
Q. Explain the construction and principle of operation of N-Channel and P-Channel Junction Field Effect Transistor (JFET). Answer: N-Channel Junction Field Effect Transistor (JFET) Construction: Drain(D)
More information1 Diodes. 1.1 Diode Models Ideal Diode. ELEN 236 Diodes
ELEN 236 Diodes 1 Diodes 1.1 Diode Models 1.1.1 Ideal Diode Current through diode is zero for any voltage less than zero i.e. reverse biased case Current through diode is not limited by diode if voltage
More informationECE 440 Lecture 29 : Introduction to the BJT-I Class Outline:
ECE 440 Lecture 29 : Introduction to the BJT-I Class Outline: Narrow-Base Diode BJT Fundamentals BJT Amplification Things you should know when you leave Key Questions How does the narrow-base diode multiply
More informationTHE METAL-SEMICONDUCTOR CONTACT
THE METAL-SEMICONDUCTOR CONTACT PROBLEM 1 To calculate the theoretical barrier height, built-in potential barrier, and maximum electric field in a metal-semiconductor diode for zero applied bias. Consider
More informationFigure 2.1: Energy Band gap Block Diagram
Figure 2.1: Energy Band gap Block Diagram Figure 2.2: Log Is Vs 10 3 /T Figure 2.3: Schematic Representation of a p-n Junction Diode Department of Physical Sciences, Bannari Amman Institute of Technology,
More informationES 330 Electronics II Homework # 1 (Fall 2016 SOLUTIONS)
SOLUTIONS ES 330 Electronics II Homework # 1 (Fall 2016 SOLUTIONS) Problem 1 (20 points) We know that a pn junction diode has an exponential I-V behavior when forward biased. The diode equation relating
More informationET215 Devices I Unit 4A
ITT Technical Institute ET215 Devices I Unit 4A Chapter 3, Section 3.1-3.2 This unit is divided into two parts; Unit 4A and Unit 4B Chapter 3 Section 3.1 Structure of Bipolar Junction Transistors The basic
More informationSRM INSTITUTE OF SCIENCE AND TECHNOLOGY (DEEMED UNIVERSITY)
SRM INSTITUTE OF SCIENCE AND TECHNOLOGY (DEEMED UNIVERSITY) QUESTION BANK I YEAR B.Tech (II Semester) ELECTRONIC DEVICES (COMMON FOR EC102, EE104, IC108, BM106) UNIT-I PART-A 1. What are intrinsic and
More informationPaper-1 (Circuit Analysis) UNIT-I
Paper-1 (Circuit Analysis) UNIT-I AC Fundamentals & Kirchhoff s Current and Voltage Laws 1. Explain how a sinusoidal signal can be generated and give the significance of each term in the equation? 2. Define
More informationEnergy band diagrams Metals: 9. ELECTRONIC DEVICES GIST ρ= 10-2 to 10-8 Ω m Insulators: ρ> 10 8 Ω m Semiconductors ρ= 1 to 10 5 Ω m 109 A. Intrinsic semiconductors At T=0k it acts as insulator At room
More informationLecture 5: Diode, Rectifier and Capacitor. Bo Wang Division of Information & Computing Technology Hamad Bin Khalifa University
Lecture 5: Diode, Rectifier and Capacitor Bo Wang Division of Information & Computing Technology Hamad Bin Khalifa University bwang@hbku.edu.qa 1 Why Rectifying? Voltage and current delivered from the
More informationDISCUSSION The best way to test a transistor is to connect it in a circuit that uses the transistor.
Exercise 1: EXERCISE OBJECTIVE When you have completed this exercise, you will be able to test a transistor by forward biasing and reverse biasing the junctions. You will verify your results with an ohmmeter.
More informationElectric Circuits, Fall 2015 Homework #4 Due: Nov. 3, 2015 (Tue., in class)
RULES: Please try to work on your own. Discussion is permissible, but identical submissions are unacceptable! Please show all intermediate steps: a correct solution without an explanation will get zero
More informationThe Norwegian University of Science and Technology ENGLISH. EXAM IN TFY 4185 Measurement Technique/Måleteknikk. 1 Dec 2014 Time: 09:00-13:00
Page 1 of 9 The Norwegian University of Science and Technology ENGLISH Department of Physics Contact person: Name: Patrick Espy Tel: +47 73 55 10 95 (office) or +47 41 38 65 78 (mobile) EXAM IN TFY 4185
More information10/27/2009 Reading: Chapter 10 of Hambley Basic Device Physics Handout (optional)
EE40 Lec 17 PN Junctions Prof. Nathan Cheung 10/27/2009 Reading: Chapter 10 of Hambley Basic Device Physics Handout (optional) Slide 1 PN Junctions Semiconductor Physics of pn junctions (for reference
More informationLight Emitting Diodes
Light Emitting Diodes Topics covered in this presentation: LED operation LED Characteristics Display devices Protection and limiting 1 of 9 Light Emitting Diode - LED A special type of diode is the Light
More informationEECE 481. MOS Basics Lecture 2
EECE 481 MOS Basics Lecture 2 Reza Molavi Dept. of ECE University of British Columbia reza@ece.ubc.ca Slides Courtesy : Dr. Res Saleh (UBC), Dr. D. Sengupta (AMD), Dr. B. Razavi (UCLA) 1 PN Junction and
More informationEXPERIMENTS USING SEMICONDUCTOR DIODES
EXPERIMENT 9 EXPERIMENTS USING SEMICONDUCTOR DIODES Semiconductor Diodes Structure 91 Introduction Objectives 92 Basics of Semiconductors Revisited 93 A p-n Junction Operation of a p-n Junction A Forward
More informationUniversità degli Studi di Roma Tor Vergata Dipartimento di Ingegneria Elettronica. Analogue Electronics. Paolo Colantonio A.A.
Università degli Studi di Roma Tor Vergata Dipartimento di Ingegneria Elettronica Analogue Electronics Paolo Colantonio A.A. 2015-16 Introduction: materials Conductors e.g. copper or aluminum have a cloud
More informationClass XII - Physics Semiconductor Electronics. Chapter-wise Problems
lass X - Physics Semiconductor Electronics Materials, Device and Simple ircuit hapter-wise Problems Multiple hoice Question :- 14.1 The conductivity of a semiconductor increases with increase in temperature
More informationBipolar Junction Transistors (BJTs) Overview
1 Bipolar Junction Transistors (BJTs) Asst. Prof. MONTREE SIRIPRUCHYANUN, D. Eng. Dept. of Teacher Training in Electrical Engineering, Faculty of Technical Education King Mongkut s Institute of Technology
More information