US03CPHY02 UNIT 2 Small Signal Amplifiers Part-1
|
|
- Adelia Watson
- 5 years ago
- Views:
Transcription
1 US03CPHY02 UNIT 2 Small Signal Amplifiers Part-1 Dr. T. H. Patel Associate Professor VP & RPTP Science College Vallabh Vidyanagar Gujarat, India. 1
2 US03CPHY02 Unit I & II 2
3 So far you have studied the. Transistor Structure: PNP & NPN Transistor Operation modes: CB,CC and CE Transistor Characteristics : Input and Output Operating Point : (I B, I C, V CE ) Biasing Circuits: Fixed Bias, C to B Bias, Voltage Divider Biasing & Emitter Bias Circuit. 3
4 Transistor Structure 4
5 Transistor Operational Modes Common Base (CB) 5
6 Transistor Operational Modes Common Emitter (CE) CC Mode assignment! 6
7 CE Transistor Characteristics Input Characteristics Output Characteristics 7
8 Transistor Biasing Circuits 8
9 Now, from here, ahead Small Signal Amplifier Graphical Method Equivalent Circuit Method h-parameters: Transistor as a Two-Port System h-parameter Equivalent Circuit of a Transistor h-parameter: Determination for CE Transistor CE Amplifier: Analysis using h-parameters Example: Multi-stage Amplifiers 9
10 What are Small Signal Amplifiers? When variation of output (i c ) with input (i b )are not very large the amplifier is called: Small Signal Amplifier. Applications: Radio &TV Receivers Tap Recorders Stereos Measuring instruments 10
11 Single Voltage Stage divider Transistor biasing Amplifier circuit +V CC X CE <= 0.1R E C C :Coupling Capacitor Voltage gain A v =V o / V i R 1 R C c c c c R 0 v 0 v i R 2 R E c E 11
12 Small Signal Amplifier Analysis: why? The following parameters of amplifier are used to describe the performance of the circuit. 1. Input Impedance (Z i ) 2. Output Impedance (Z 0 ) 3. Current Gain (A i ) 4. Voltage Gain (A v ) and 5. Bandwidth The transistor circuits needs to be analyzed to determine the values of these parameters. 12
13 Small Signal Amplifier: Analysis 1. Graphical Method. 2. Equivalent Circuit Method. 13
14 Graphical Method for Amplifier Analysis Advantages: No approximate assumptions. More accurate results than other methods. Only method suitable for large signal amplifiers and power amplifiers. We need output characteristics supplied by manufacturer to see variations of I B, Ic and V C. 14
15 Graphical Method for Amplifier Analysis The method involves the determination of; 1. DC Load Line (DC Analysis) 2. AC Load Line (AC Analysis) 3. Current Gain 4. Voltage gain 5. Phase Relations 15
16 Graphical Method: DC Analysis (DC Load Line) Are DC and AC Load Lines same or different? + v CC + v CC R 1 R C C C R 1 R C C C `` + v i R 2 R E C E v 0 re R 2 R E Basic CE small signal amplifier Circuit DC behavior For all DC currents or voltages all Cs make open circuit. 16
17 DC load line: Graphical Method: DC Analysis + v CC KVL R 1 R C I C y = m x + c R 2 R E V CE I E I C A When V CE = 0, I C = V CC /(R C +R E ) A When I C = 0, V CC =V CE B re I B I C DC behavior DC load line V CE B V CE 17
18 Graphical Method: DC Analysis Determination of DC load line; Example: 18
19 I C 8.2 ma Graphical Method: DC Analysis DC Load line y = mx +c m = -1/ R dc = -1/(R C +R E ) Vcc = 9V and Vcc/(Rc+R E ) = 8.2 ma (9V, 0) and (0, 8.2 ma), I B =30 μa I B = 60 µa Q I B = 40 µa I B = 20 µa 9 V V CE 19
20 Graphical Method: DC Analysis Determination of DC load line; Example: y = mx +c m = -1/ R dc = -1/(R C +R E ) Vcc = 9V and Vcc/(Rc+R E ) = 8.2 ma (9V, 0) and (0, 8.2 ma), I B =30 μa 20
21 Graphical Method: DC Analysis DC Load line Variations in Q with DC bias (I B ) I C I B = 60 µa Q I B = 40 µa I B = 20 µa V CE But with AC signal, changes in Q are very fast. 21
22 Graphical Method: AC Analysis We need two Considerations: 1. The capacitive reactance is X c = 1/(2πfC) Ω. It indicates that the coupling & emitter by-pass capacitor can be approximated as short circuit at high enough frequency. 2. Since, we deal with only ac voltages we do need not to consider effect of dc voltages/currents in the circuit. With these two considerations the amplifier circuit can be modeled for equivalent circuit. 22
23 Graphical Method: AC Analysis R 1 +V CC R C c c 1. Effect of Cc s and C E 2. DC supply Shorted c c v i R 2 R E R 0 c E v 0 v i R 1 R R C R 0 v 0 2? Basic CE Circuit AC behavior Where is R E? 23
24 AC behavior: Graphical Method: AC Analysis R C R 0 v v R i 1 R 0 2 As shown, R C and Ro in parallel forms the ac load R ac. The load line corresponding to this R ac is ac load line Since R dc and R ac are different, DC and AC load lines are different. However both must passes through Q point for zero signal condition. 24
25 Graphical Method: AC Analysis Determine the AC load line of the circuit. 25
26 Graphical Method: AC load line; Example With AC signal R ac = Rc Ro= 320 Ω B and so 1/Rac = Slope of ac load line = 1/Rac Draw line AB with slope =OB/OA =1/Rac A If we set OA= 1V then slope = 1/R ac = OB/1V. So we get OB = (1V/R ac ) Ampere = 3.1 ma. Hence we get co-rdinates of point B. 26
27 Graphical Method: Calculation of Gain 27
28 Graphical Method: Calculation of Gain With AC signal of 5 mv, peak to peak variation are 5x 2 x 2 =14.14mV Voltage Gain A v = (V CE max V Cmin ) / (V i max V i min ) = ( ) V/ (14.14) mv = Current Gain = (I C max I Cmin ) / (I B max I bmin ) = ( ) / (40 20) =
29 Graphical Method: input-output phase relations i c IN PHASE v CE OUT OF PHASE 29
30 Graphical Method: input output phase relations R1 V CC R C I C I B R2 V B V BE V C 30
31 Graphical Method: input output phase relations 31
32 Reference Book: Basic Electronics and Linear Circuits N N Bhargava D C Kulshreshtha S C Gupta 32
US03CPHY02 UNIT 3 Feedback in Amplifiers Part-2
US03CPHY02 UNIT 3 Feedback in Amplifiers Part2 Dr. T. H. Patel Associate Professor VP & RPTP Science College Vallabh Vidyanagar388120 Gujarat, India. pateltarunh@yahoo.com V.V. NAGAR 1 UNIT 3 USO3CPHY02
More informationLab 4. Transistor as an amplifier, part 2
Lab 4 Transistor as an amplifier, part 2 INTRODUCTION We continue the bi-polar transistor experiments begun in the preceding experiment. In the common emitter amplifier experiment, you will learn techniques
More informationTutorial 2 BJTs, Transistor Bias Circuits, BJT Amplifiers FETs and FETs Amplifiers. Part 1: BJTs, Transistor Bias Circuits and BJT Amplifiers
Tutorial 2 BJTs, Transistor Bias Circuits, BJT Amplifiers FETs and FETs Amplifiers Part 1: BJTs, Transistor Bias Circuits and BJT Amplifiers 1. Explain the purpose of a thin, lightly doped base region.
More informationHomework Assignment 12
Homework Assignment 12 Question 1 Shown the is Bode plot of the magnitude of the gain transfer function of a constant GBP amplifier. By how much will the amplifier delay a sine wave with the following
More informationLecture #4 BJT AC Analysis
November 2014 Ahmad El-Banna Integrated Technical Education Cluster At AlAmeeria J-601-1448 Electronic Principals Lecture #4 BJT AC Analysis Instructor: Dr. Ahmad El-Banna Agenda BJT transistor Modeling
More informationECE 334: Electronic Circuits Lecture 2: BJT Large Signal Model
Faculty of Engineering ECE 334: Electronic Circuits Lecture 2: BJT Large Signal Model Agenda I & V Notations BJT Devices & Symbols BJT Large Signal Model 2 I, V Notations (1) It is critical to understand
More informationSmall signal ac equivalent circuit of BJT
UNIT-2 Part A 1. What is an ac load line? [N/D 16] A dc load line gives the relationship between the q-point and the transistor characteristics. When capacitors are included in a CE transistor circuit,
More informationR a) Draw and explain VI characteristics of Si & Ge diode. (8M) b) Explain the operation of SCR & its characteristics (8M)
SET - 1 1. a) Define i) transient capacitance ii) Diffusion capacitance (4M) b) Explain Fermi level in intrinsic and extrinsic semiconductor (4M) c) Derive the expression for ripple factor of Half wave
More informationBJT Circuits (MCQs of Moderate Complexity)
BJT Circuits (MCQs of Moderate Complexity) 1. The current ib through base of a silicon npn transistor is 1+0.1 cos (1000πt) ma. At 300K, the rπ in the small signal model of the transistor is i b B C r
More informationChapter 13 Output Stages and Power Amplifiers
Chapter 13 Output Stages and Power Amplifiers 13.1 General Considerations 13.2 Emitter Follower as Power Amplifier 13.3 Push-Pull Stage 13.4 Improved Push-Pull Stage 13.5 Large-Signal Considerations 13.6
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 informationThe Miller Approximation. CE Frequency Response. The exact analysis is worked out on pp of H&S.
CE Frequency Response The exact analysis is worked out on pp. 639-64 of H&S. The Miller Approximation Therefore, we consider the effect of C µ on the input node only V ---------- out V s = r g π m ------------------
More informationTransistor Biasing Nafees Ahamad
Transistor Biasing Nafees Ahamad Asstt. Prof., EECE Deptt, DIT University, Dehradun Website: www.eedofdit.weebly.com Introduction The basic function of transistor is to do amplification. (CE connection)
More informationElectronic Circuits EE359A
Electronic Circuits EE359A Bruce McNair B206 bmcnair@stevens.edu 201-216-5549 Lecture 4 0 Bipolar Junction Transistors (BJT) Small Signal Analysis Graphical Analysis / Biasing Amplifier, Switch and Logic
More informationFREQUENCY RESPONSE OF COMMON COLLECTOR AMPLIFIER
Exp. No #5 FREQUENCY RESPONSE OF COMMON COLLECTOR AMPLIFIER Date: OBJECTIVE The purpose of the experiment is to analyze and plot the frequency response of a common collector amplifier. EQUIPMENT AND COMPONENTS
More informationCode: 9A Answer any FIVE questions All questions carry equal marks *****
II B. Tech II Semester (R09) Regular & Supplementary Examinations, April/May 2012 ELECTRONIC CIRCUIT ANALYSIS (Common to EIE, E. Con. E & ECE) Time: 3 hours Max Marks: 70 Answer any FIVE questions All
More informationBJT Characteristics & Common Emitter Transistor Amplifier
LAB #07 Objectives 1. To graph the collector characteristics of a transistor. 2. To measure AC and DC voltages in a common-emitter amplifier. Theory BJT A bipolar (junction) transistor (BJT) is a three-terminal
More informationEarly Effect & BJT Biasing
Early Effect & BJT Biasing Early Effect DC BJT Behavior DC Biasing the BJT 1 ESE319 Introduction to Microelectronics Early Effect Saturation region Forward-Active region 4 3 Ideal NPN BJT Transfer V Characteristic
More informationThe shape of the waveform will be the same, but its level is shifted either upward or downward. The values of the resistor R and capacitor C affect
Diode as Clamper A clamping circuit is used to place either the positive or negative peak of a signal at a desired level. The dc component is simply added or subtracted to/from the input signal. The clamper
More informationHomework Assignment 05
Homework Assignment 05 Question (2 points each unless otherwise indicated)(20 points). Estimate the parallel parasitic capacitance of a mh inductor with an SRF of 220 khz. Answer: (2π)(220 0 3 ) = ( 0
More informationThe Bipolar Junction Transistor- Small Signal Characteristics
The Bipolar Junction Transistor- Small Signal Characteristics Debapratim Ghosh deba21pratim@gmail.com Electronic Systems Group Department of Electrical Engineering Indian Institute of Technology Bombay
More informationUNIT I BIASING OF DISCRETE BJT AND MOSFET PART A
UNIT I BIASING OF DISCRETE BJT AND MOSFET PART A 1. Why do we choose Q point at the center of the load line? 2. Name the two techniques used in the stability of the q point.explain. 3. Give the expression
More informationUnit WorkBook 4 Level 4 ENG U19 Electrical and Electronic Principles LO4 Digital & Analogue Electronics 2018 Unicourse Ltd. All Rights Reserved.
Pearson BTEC Levels 4 Higher Nationals in Engineering (RQF) Unit 19: Electrical and Electronic Principles Unit Workbook 4 in a series of 4 for this unit Learning Outcome 4 Digital & Analogue Electronics
More informationElectronic Circuits - Tutorial 07 BJT transistor 1
Electronic Circuits - Tutorial 07 BJT transistor 1-1 / 20 - T & F # Question 1 A bipolar junction transistor has three terminals. T 2 For operation in the linear or active region, the base-emitter junction
More informationPartIIILectures. Multistage Amplifiers
University of missan Electronic II, Second year 2015-2016 PartIIILectures Assistant Lecture: 1 Multistage and Compound Amplifiers Basic Definitions: 1- Gain of Multistage Amplifier: Fig.(1-1) A general
More informationChapter Three " BJT Small-Signal Analysis "
Chapter Three " BJT Small-Signal Analysis " We now begin to examine the small-signal ac response of the BJT amplifier by reviewing the models most frequently used to represent the transistor in the sinusoidal
More informationHomework Assignment 03
Homework Assignment 03 Question 1 (Short Takes), 2 points each unless otherwise noted. 1. Two 0.68 μf capacitors are connected in series across a 10 khz sine wave signal source. The total capacitive reactance
More informationAnalog Electronic Circuits Lab-manual
2014 Analog Electronic Circuits Lab-manual Prof. Dr Tahir Izhar University of Engineering & Technology LAHORE 1/09/2014 Contents Experiment-1:...4 Learning to use the multimeter for checking and indentifying
More informationLab 2: Discrete BJT Op-Amps (Part I)
Lab 2: Discrete BJT Op-Amps (Part I) This is a three-week laboratory. You are required to write only one lab report for all parts of this experiment. 1.0. INTRODUCTION In this lab, we will introduce and
More informationElectron Devices and Circuits
Electron Devices and Circuits (EC 8353) Prepared by Mr.R.Suresh, AP/EEE Ms.S.KARKUZHALI,A.P/EEE BJT small signal model Analysis of CE, CB, CC amplifiers- Gain and frequency response MOSFET small signal
More informationChapter 3: Bipolar Junction Transistors
Chapter 3: Bipolar Junction Transistors Transistor Construction There are two types of transistors: pnp npn pnp The terminals are labeled: E - Emitter B - Base C - Collector npn 2 Transistor Operation
More informationChapter 5 Transistor Bias Circuits
Chapter 5 Transistor Bias Circuits Objectives Discuss the concept of dc biasing of a transistor for linear operation Analyze voltage-divider bias, base bias, and collector-feedback bias circuits. Basic
More informationSmall signal Amplifier stages. Figure 5.2 Classification of power amplifiers
5.1 Introduction When the power requirement to drive the load is in terms of several Watts rather than mili-watts the power amplifiers are used. Power amplifiers form the last stage of multistage amplifiers.
More informationChapter 15 Goals. ac-coupled Amplifiers Example of a Three-Stage Amplifier
Chapter 15 Goals ac-coupled multistage amplifiers including voltage gain, input and output resistances, and small-signal limitations. dc-coupled multistage amplifiers. Darlington configuration and cascode
More informationChapter 6. BJT Amplifiers
Basic Electronic Devices and Circuits EE 111 Electrical Engineering Majmaah University 2 nd Semester 1432/1433 H Chapter 6 BJT Amplifiers 1 Introduction The things you learned about biasing a transistor
More informationReading. Lecture 33: Context. Lecture Outline. Chapter 9, multi-stage amplifiers. Prof. J. S. Smith
eading Lecture 33: Chapter 9, multi-stage amplifiers Prof J. S. Smith Context Lecture Outline We are continuing to review some of the building blocks for multi-stage amplifiers, including current sources
More informationECE 255, Discrete-Circuit Amplifiers
ECE 255, Discrete-Circuit Amplifiers 20 March 2018 In this lecture, we will continue with the study of transistor amplifiers with the presence of biasing circuits and coupling capacitors in place. We will
More informationECE321 Electronics I Fall 2006
ECE321 Electronics I Fall 2006 Professor James E. Morris Lecture 11 31 st October, 2006 Bipolar Junction Transistors (BJTs) 5.1 Device Structure & Physics 5.2 I-V Characteristics Convert 5.1 information
More informationPHYS225 Lecture 6. Electronic Circuits
PHYS225 Lecture 6 Electronic Circuits Transistors History Basic physics of operation Ebers-Moll model Small signal equivalent Last lecture Introduction to Transistors A transistor is a device with three
More informationdc Bias Point Calculations
dc Bias Point Calculations Find all of the node voltages assuming infinite current gains 9V 9V 10kΩ 9V 100kΩ 1kΩ β = 270kΩ 10kΩ β = 1kΩ 1 dc Bias Point Calculations Find all of the node voltages assuming
More informationImproving Amplifier Voltage Gain
15.1 Multistage ac-coupled Amplifiers 1077 TABLE 15.3 Three-Stage Amplifier Summary HAND ANALYSIS SPICE RESULTS Voltage gain 998 1010 Input signal range 92.7 V Input resistance 1 M 1M Output resistance
More informationExperiment 6: Biasing Circuitry
1 Objective UNIVERSITY OF CALIFORNIA AT BERKELEY College of Engineering Department of Electrical Engineering and Computer Sciences EE105 Lab Experiments Experiment 6: Biasing Circuitry Setting up a biasing
More informationUnit 3 The Bipolar Junc3on Transistor
Unit 3 The Bipolar Junc3on Transistor Bipolar junc-on transistors (BJTs) Contents Basic Bipolar Junc3on Transistor, Transistor Structures (NPN and PNP ) Modes of Opera3on Symbol and Conven3ons Current
More informationCrystal Oscillator. Circuit symbol
Crystal Oscillator Crystal Oscillator Piezoelectric crystal (quartz) Operates as a resonant circuit Shows great stability in oscillation frequency Piezoelectric effect : When mechanical stress is applied
More informationDEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING III SEMESTER EC 6304 ELECTRONIC CIRCUITS I. (Regulations 2013)
DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING III SEMESTER EC 6304 ELECTRONIC CIRCUITS I (Regulations 2013 UNIT-1 Part A 1. What is a Q-point? [N/D 16] The operating point also known as quiescent
More informationCommunication Microelectronics (W17)
Communication Microelectronics (W17) Lecture 4: Bipolar Junction Transistor Assistant Professor Office: C3.315 E-mail: eman.azab@guc.edu.eg 1 Bipolar Junction Transistor (BJT) Physical Structure and I-V
More informationChapter 6: Transistors and Gain
I. Introduction Chapter 6: Transistors and Gain This week we introduce the transistor. Transistors are three-terminal devices that can amplify a signal and increase the signal s power. The price is that
More informationCode No: R Set No. 1
Code No: R059210404 Set No. 1 II B.Tech I Semester Supplimentary Examinations, February 2008 ELECTRONIC CIRCUIT ANALYSIS ( Common to Electronics & Communication Engineering and Electronics & Telematics)
More informationEXPERIMENT 5 CURRENT AND VOLTAGE CHARACTERISTICS OF BJT
EXPERIMENT 5 CURRENT AND VOLTAGE CHARACTERISTICS OF BJT 1. OBJECTIVES 1.1 To practice how to test NPN and PNP transistors using multimeter. 1.2 To demonstrate the relationship between collector current
More information5.25Chapter V Problem Set
5.25Chapter V Problem Set P5.1 Analyze the circuits in Fig. P5.1 and determine the base, collector, and emitter currents of the BJTs as well as the voltages at the base, collector, and emitter terminals.
More informationMini Project 2 Single Transistor Amplifiers. ELEC 301 University of British Columbia
Mini Project 2 Single Transistor Amplifiers ELEC 301 University of British Columbia 44638154 October 27, 2017 Contents 1 Introduction 1 2 Investigation 1 2.1 Part 1.................................................
More informationExperiment No. 6 Output Characteristic of Transistor
Experiment No. 6 Output Characteristic of Transistor Object: To examine the output characteristic of transistor. Apparatus: 1. Two DC power supply. 2. Three AVOmeters. 3. Transistor 2N2222, Resistor 1
More informationModule-1 BJT AC Analysis: The re Transistor Model. Common-Base Configuration
Module-1 BJT AC Analysis: BJT AC Analysis: BJT AC Analysis: BJT Transistor Modeling, The re transistor model, Common emitter fixed bias, Voltage divider bias, Emitter follower configuration. Darlington
More informationEE105 Fall 2014 Microelectronic Devices and Circuits. NPN Bipolar Junction Transistor (BJT)
EE105 Fall 2014 Microelectronic Devices and Circuits Prof. Ming C. Wu wu@eecs.berkeley.edu 511 utardja Dai Hall (DH) 1 NPN Bipolar Junction Transistor (BJT) Forward Bias Reverse Bias Hole Flow Electron
More informationChapter 12 Power Amplifier
Chapter 12 Power Amplifier Definitions In small-signal amplifiers the main factors are: Amplification Linearity Gain Since large-signal, or power, amplifiers handle relatively large voltage signals and
More informationSAMPLE FINAL EXAMINATION FALL TERM
ENGINEERING SCIENCES 154 ELECTRONIC DEVICES AND CIRCUITS SAMPLE FINAL EXAMINATION FALL TERM 2001-2002 NAME Some Possible Solutions a. Please answer all of the questions in the spaces provided. If you need
More informationExperiment 6: Biasing Circuitry
1 Objective UNIVERSITY OF CALIFORNIA AT BERKELEY College of Engineering Department of Electrical Engineering and Computer Sciences EE105 Lab Experiments Experiment 6: Biasing Circuitry Setting up a biasing
More informationScheme Q.1 Attempt any SIX of following: 12-Total Marks a) Draw symbol NPN and PNP transistor. 2 M Ans: Symbol Of NPN and PNP BJT (1M each)
Q. No. WINTER 16 EXAMINATION (Subject Code: 17319) Model Answer Important Instructions to examiners: 1) The answers should be examined by key words and not as word-to-word as given in the model answer
More informationLecture 33: Context. Prof. J. S. Smith
Lecture 33: Prof J. S. Smith Context We are continuing to review some of the building blocks for multi-stage amplifiers, including current sources and cascode connected devices, and we will also look at
More informationExperiment #6: Biasing an NPN BJT Introduction to CE, CC, and CB Amplifiers
SCHOOL OF ENGINEERING AND APPLIED SCIENCE DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING ECE 2115: ENGINEERING ELECTRONICS LABORATORY Experiment #6: Biasing an NPN BJT Introduction to CE, CC, and CB
More informationBJT AC Analysis CHAPTER OBJECTIVES 5.1 INTRODUCTION 5.2 AMPLIFICATION IN THE AC DOMAIN
BJT AC Analysis 5 CHAPTER OBJECTIVES Become familiar with the, hybrid, and hybrid p models for the BJT transistor. Learn to use the equivalent model to find the important ac parameters for an amplifier.
More informationClassABampDesign. Do not design for an edge. Class B push pull stage. Vdd = - Vee. For Vin < Vbe (Ri + Rin2) / Rin2
ClassABampDesign Richard Cooper October 17 2016 When the input signal is positive, the NPN transistor Q1 turns ON, the PNP transistor Q2 is OFF, and the output voltage is positive. The NPN transistor (emitter
More informationMicroelectronics Circuit Analysis and Design
Neamen Microelectronics Chapter 6-1 Microelectronics Circuit Analysis and Design Donald A. Neamen Chapter 6 Basic BJT Amplifiers Neamen Microelectronics Chapter 6-2 In this chapter, we will: Understand
More informationLecture 18: Common Emitter Amplifier.
Whites, EE 320 Lecture 18 Page 1 of 8 Lecture 18: Common Emitter Amplifier. We will now begin the analysis of the three basic types of linear BJT small-signal amplifiers: 1. Common emitter (CE) 2. Common
More informationElectronics EECE2412 Spring 2017 Exam #2
Electronics EECE2412 Spring 2017 Exam #2 Prof. Charles A. DiMarzio Department of Electrical and Computer Engineering Northeastern University 30 March 2017 File:12198/exams/exam2 Name: : General Rules:
More informationEC1203: ELECTRONICS CIRCUITS-I UNIT-I TRANSISTOR BIASING PART-A
SHRI ANGALAMMAN COLLEGE OF ENGG & TECH., TRICHY 621105 (Approved by AICTE, New Delhi and Affiliated to Anna University Chennai/Trichy) ( ISO 9001:2008 Certified Institution) DEPARTMENT OF ELECTRONICS &
More informationREVIEW TRANSISTOR BIAS CIRCUIT
EVIEW TANSISTO BIAS CICUIT OBJECTIVES Discuss the concept of dc biasing of a transistor for linear operation Analyze voltage-divider bias, base bias, and collectorfeedback bias circuits. Basic troubleshooting
More informationStructure of Actual Transistors
4.1.3. Structure of Actual Transistors Figure 4.7 shows a more realistic BJT cross-section Collector virtually surrounds entire emitter region This makes it difficult for electrons injected into base to
More informationEmitter base bias. Collector base bias Active Forward Reverse Saturation forward Forward Cut off Reverse Reverse Inverse Reverse Forward
SEMICONDUCTOR PHYSICS-2 [Transistor, constructional characteristics, biasing of transistors, transistor configuration, transistor as an amplifier, transistor as a switch, transistor as an oscillator] Transistor
More informationUNIT-1 Bipolar Junction Transistors. Text Book:, Microelectronic Circuits 6 ed., by Sedra and Smith, Oxford Press
UNIT-1 Bipolar Junction Transistors Text Book:, Microelectronic Circuits 6 ed., by Sedra and Smith, Oxford Press Figure 6.1 A simplified structure of the npn transistor. Microelectronic Circuits, Sixth
More informationDESIGN & TESTING OF A RC COUPLED SINGLE STAGE BJT AMPLIFIER
DESIGN & TESTING OF A RC COUPLED SINGLE STAGE BJT AMPLIFIER Aim: Wiring of a RC coupled single stage BJT amplifier and determination of the gainfrequency response, input and output impedances. Apparatus
More informationSubject Code: Model Answer Page No: / N
Important Instructions to examiners: 1) The answers should be examined by key words and not as word-to-word as given in the model answer scheme. 2) The model answer and the answer written by candidate
More informationMultistage Amplifiers
Multistage Amplifiers Single-stage transistor amplifiers are inadequate for meeting most design requirements for any of the four amplifier types (voltage, current, transconductance, and transresistance.)
More informationExperiment #8: Designing and Measuring a Common-Collector Amplifier
SCHOOL OF ENGINEERING AND APPLIED SCIENCE DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING ECE 2115: ENGINEERING ELECTRONICS LABORATORY Experiment #8: Designing and Measuring a Common-Collector Amplifier
More informationBIPOLAR JUNCTION TRANSISTORS (BJTs) Dr Derek Molloy, DCU
IPOLAR JUNCTION TRANSISTORS (JTs) Dr Derek Molloy, DCU What are JTs? Two PN junctions joined together is a JT Simply known as a transistor! ipolar? Current carried by electrons and holes Will see FETs
More informationFundamentals of Microelectronics. Bipolar Amplifier
Bipolar Amplifier Voltage Amplifier Performance Metrics - There are many metrics that are used to evaluate how good an amplifier is (1) (Voltage) Gain= Vout/ Vin. Can be found from small-signal 10 8 6
More informationElectronic Troubleshooting
Electronic Troubleshooting Chapter 3 Bipolar Transistors Most devices still require some individual (discrete) transistors Used to customize operations Interface to external devices Understanding their
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 informationBipolar Junction Transistors (BJTs)
C H A P T E R 6 Bipolar Junction Transistors (BJTs) Figure 6.1 A simplified structure of the npn transistor and pnp transistor. Table 6.1: BJT modes of Operation Mode Cutoff Active Saturation EBJ Reverse
More informationCHAPTER 3: BIPOLAR JUNCION TRANSISTOR DR. PHẠM NGUYỄN THANH LOAN
CHAPTER 3: BIPOLAR JUNCION TRANSISTOR DR. PHẠM NGUYỄN THANH LOAN Hanoi, 9/24/2012 Contents 2 Structure and operation of BJT Different configurations of BJT Characteristic curves DC biasing method and analysis
More informationESE319 Introduction to Microelectronics High Frequency BJT Model & Cascode BJT Amplifier
High Frequency BJT Model & Cascode BJT Amplifier 1 Gain of 10 Amplifier Non-ideal Transistor C in R 1 V CC R 2 v s Gain starts dropping at > 1MHz. Why! Because of internal transistor capacitances that
More informationMidium Power Transistors (±50V / ±3A)
Midium Power Transistors (±50V / ±3A) MP6Z3 Structure NPN/PNP Silicon epitaxial planar transistor Dimensions (Unit : mm) MPT6 (Dual) Features ) Low saturation voltage, typically V CE (sat) = 0.35V (Max.)
More informationLecture 7. ANNOUNCEMENTS MIDTERM #1 willbe held in class on Thursday, October 11 Review session will be held on Friday, October 5
Lecture 7 ANNOUNCEMENTS MIDTERM #1 willbe held in class on Thursday, October 11 Review session will be held on Friday, October 5 MIDTERM #2 will be held in class on Tuesday, November 13 OUTLINE BJT Amplifiers
More informationChapter 3. Bipolar Junction Transistors
Chapter 3. Bipolar Junction Transistors Outline: Fundamental of Transistor Common-Base Configuration Common-Emitter Configuration Common-Collector Configuration Introduction The transistor is a three-layer
More informationEngineering Spring Homework Assignment 4: BJT Biasing and Small Signal Properties
Engineering 1620 -- Spring 2011 Homework Assignment 4: BJT Biasing and Small Signal Properties 1.) The circuit below is a common collector amplifier using constant current biasing. (Constant current biasing
More informationSS8050. V CE =1V, I C =5mA V CE =1V, I C =100mA. 9.0 pf f=1mhz f T Current Gain Bandwidth Product V CE =10V, I C =50mA MHz
SS8050 SS8050 2W Output Amplifier of Portable Radios in Class B Push-pull Operation. Complimentary to Collector Current: I C =.5A Collector Power Dissipation: P C =2W (T C =25 C). Emitter 2. Base 3. Collector
More informationHomework Assignment 11
Homework Assignment 11 Question 1 (Short Takes) Two points each unless otherwise indicated. 1. What is the 3-dB bandwidth of the amplifier shown below if r π = 2.5K, r o = 100K, g m = 40 ms, and C L =
More informationWINTER 14 EXAMINATION. Model Answer. 1) The answers should be examined by key words and not as word-to-word as given in the
WINTER 14 EXAMINATION Subject Code: 17213 Model Answer Important Instructions to examiners: 1) The answers should be examined by key words and not as word-to-word as given in the model answer scheme. 2)
More informationHomework Assignment 01
Homework Assignment 01 In this homework set students review some basic circuit analysis techniques, as well as review how to analyze ideal op-amp circuits. Numerical answers must be supplied using engineering
More informationI1 19u 5V R11 1MEG IDC Q7 Q2N3904 Q2N3904. Figure 3.1 A scaled down 741 op amp used in this lab
Lab 3: 74 Op amp Purpose: The purpose of this laboratory is to become familiar with a two stage operational amplifier (op amp). Students will analyze the circuit manually and compare the results with SPICE.
More information(a) BJT-OPERATING MODES & CONFIGURATIONS
(a) BJT-OPERATING MODES & CONFIGURATIONS 1. The leakage current I CBO flows in (a) The emitter, base and collector leads (b) The emitter and base leads. (c) The emitter and collector leads. (d) The base
More informationESE 319 MT Review
ESE 319 MT1 2010 Review 1)--> Physical operation of a BJT (layout, why currents are related, npn vs. pnp). 2)Cover the Eber's Mole Model for forward and reverse active configurations. (large signal model)
More informationECE 255, MOSFET Basic Configurations
ECE 255, MOSFET Basic Configurations 8 March 2018 In this lecture, we will go back to Section 7.3, and the basic configurations of MOSFET amplifiers will be studied similar to that of BJT. Previously,
More informationFREQUENTLY ASKED QUESTIONS
FREQUENTLY ASKED QUESTIONS UNIT-1 SUBJECT : ELECTRONIC DEVICES AND CIRCUITS SUBJECT CODE : EC6202 BRANCH: EEE PART -A 1. What is meant by diffusion current in a semi conductor? (APR/MAY 2010, 2011, NOV/DEC
More informationPhysics 116A Notes Fall 2004
Physics 116A Notes Fall 2004 David E. Pellett Draft v.0.9 beta Notes Copyright 2004 David E. Pellett unless stated otherwise. References: Text for course: Fundamentals of Electrical Engineering, second
More informationELECTRONIC DEVICES AND CIRCUITS (EDC) LABORATORY MANUAL
ELECTRONIC DEVICES AND CIRCUITS (EDC) LABORATORY MANUAL (B.E. THIRD SEMESTER - BEENE302P / BEECE302P/ BEETE302P) Prepared by Prof. S. Irfan Ali HOD PROF. M. NASIRUDDIN DEPARTMENT OF ELECTRONICS & TELECOMMUNICATION
More informationElectronic Devices, 9th edition Thomas L. Floyd. Input signal. R 1 and R 2 are selected to establish V B. If the V CE
3/9/011 lectronic Devices Ninth dition Floyd hapter 5: Transistor ias ircuits The D Operating Point ias establishes the operating point (Q-point) of a transistor amplifier; the ac signal (ma) moves above
More informationMidterm 2 Exam. Max: 90 Points
Midterm 2 Exam Name: Max: 90 Points Question 1 Consider the circuit below. The duty cycle and frequency of the 555 astable is 55% and 5 khz respectively. (a) Determine a value for so that the average current
More informationUNISONIC TECHNOLOGIES CO., LTD MPSA92/93
UNISONIC TECHNOLOGIES CO., LTD /93 HIGH VOLTAGE PNP TRANSISTOR DESCRIPTION The /93 are high voltage PNP transistors, designed for telephone signal switching and for high voltage amplifier. FEATURES * High
More informationThe first transistor. (Courtesy Bell Telephone Laboratories.)
Fig. 3.1 The first transistor. (Courtesy Bell Telephone Laboratories.) Fig. 3.2 Types of transistors: (a) pnp; (b) npn. : (a) pnp; : (b) npn Fig. 3.3 Forward-biased junction of a pnp transistor. Fig. 3.4
More information