Course Title : ECE-246 Fundamental of Electronics Lecture #1 : Introduction Instructor: Dr. Selma Özaydın

Index  Course Information  Course Objectives  Lectures List  Basic Concepts

Course Information Instructor :Dr. Selma Özaydın Office: Room #205 Lectures : Lab: Monday :15.20 & Tuesday: (From to ) wednsdy: to thrsdy: to Lab Assistants: Course Content : Semiconductor Elements, Diodes, Wave Shaping Circuits, BJT, JFET Transistors, Biasing, Small Signal Modelling, Power Amplifiers Recommended Text book : R. Boylestad, Electronic Devices and Circuit Theory, 11th edition, Prentice Hall. Lecture notes:Lectures slides can be found online at Late tolerance:Max. Late for class is 5min.

Planned Lecture List of ECE 246  Introduction: General outline (Week #1 : )  Semiconductors Materials (Week #2 : )  Diodes and Diodes Applications. (Week #3 : )  Bipolar Junction Transistors: DC biasing (BJTs). (Week #4: )  BJTs AC Biasing. (Week #5 : )  Field Effect Transistors (FETs) (Week #6 : )  FETs Biasing. (Week #7 : )  FET Modeling and Small Signal Amplifiers (Week #8 : )  BJT & JFET Frequency response (Week #9 : )  Operational Amplifiers (Week #10 : )  Opamp applications (Week #11 : )  Power Amplifiers (Week #12 : )  Linear-Digital Integrated Circuits (ICs) (Week #13 : )

ECE-246 Course Objectives  Understand the transistor biasing, modeling, and its small- signal analysis.  Analyze the transistor (Diode, BJT, FET) circuits at low, medium and high frequencies and study its frequency response using bode plots.  Explain the operation of tuned amplifiers and power amplifiers.  Learn the difference between amplifiers and oscillators and study the oscillator circuits.  Study the mixers and modulators circuits.

 Review of outline of the course  Course objectives  Syllabus  Basic concepts  General info about input signal types of circuits  Analog/digital signals  Material types in electronic  Conductivity/resistivity parameters o semiconductors  Energy band levels of materials Week#1. Introduction

Week#2. Semiconductor Materials (Ch#1)  Semiconductor Materials.  Energy levels  N and P types  Ideal diodes  Semiconductor diodes  Resistance Levels  Diodes equivalent circuits  Data sheets and Parameters  Diode Testing  Diode types  Load Line Analysis of Diodes

Week#3: Diode Applications (Ch#2)  Actual Diode Characteristic  Aproximate Diode Characteristic  Serial diode configurations with DC inputs  Parallel and Series/Parallel diodes  Diodes as logic gates (AND/OR Gates)  Diodes with AC inputs  HWR's  FWR's  Clippers  Clampers  Zener Diodes  Voltage Multiplier Circuits  Introduction to BJT theory

Week#4: BJT DC Biasing (Ch#4) Operating Point (Q-point). Fixed bias circuit Emitter biased configuration Emitter-Follower Configuration Common-Base Configuration Collector Feedback Configuration Voltage Divider bias configuration Voltage feedback bias Miscellaneous bias configurations Biasing operation Transistor as a switch PNP transistors Bias stabilization Multiple BJT Networks

Week#5: BJT AC Biasing (Ch#5) Amplification in the AC Domain BJT Transistor Modeling The r e Transistor Model Common-Emitter Fixed-Bias Configuration Voltage-Divider Bias CE Emitter-Bias Configuration Emitter-Follower Configuration Common-Base Configuration Collector Feedback Configuration Collector DC Feedback Configuration Determining the Current Gain Two-Port Systems Approach Cascaded Systems Darlington Connection The Hybrid Equivalent Models

Week#6: JFET Transistors (Ch#6) Construction and Characteristics of FETs Transfer Characteristics Data Sheets and parameters Instrumentation Important relationships Depletion type MOSFET MOSFET handling VMOS CMOS

Week 7: JFET Biasing (Ch#7) Fixed bias configuration Self bias configuration Voltage Divider biasing Depletion type MOSFETs Enhancement type MOSFETs Design P channel FETs

Week#8: FET Amplifiers (Ch#8) CE, CC and CB. Collector feedback configuration Collector dc feedback

Week#9: BJT & JFET Freq.Response (Ch#9) JFET Small Signal Model CS, CD, and CG Fixed Bias Configuration Self bias configuration Voltage Divider configuration

Week#10: operational amplifiers (Ch #10) Differential Amplifier Circuit BiFET, BiMOS, and CMOS Differential Amplifier Circuits Op-Amp Basics Practical Op-Amp Circuits Op-Amp Specifications—DC Offset Parameters Op-Amp Specifications—Frequency Parameters Op-Amp Unit Specifications Differential and Common-Mode Operation

Week#11: Opamp Applications (Ch#11) Constant-Gain Multiplier Voltage Summing Voltage Buffer Controlled Sources Instrumentation Circuits Active Filters

Week#12: Power Amplifiers (Ch#12) Definitions and Amplifier Types Series-Fed Class A Amplifier Transformer-Coupled Class A Amplifier Class B Amplifier Operation Class B Amplifier Circuits Amplifier Distortion Power Transistor Heat Sinking Class C and Class D Amplifiers

Week#13: Linear-Digital ICs (Ch#13 & 15) Comparator Unit Operation Digital–Analog Converters Timer IC Unit Operation Voltage-Controlled Oscillator Phase-Locked Loop Interfacing Circuitry IC voltage regulators

Basic Concepts :

Some signal examples: An arbitrary voltage signal Freq.spectrum of an arbitrary signal Current Sources Voltage Sources Signals :

A sine wave signal of va and its freq. f =1/T frequency time Frequency Spectrum view of a signal:

A square-wave signal of va and its freq. f =1/T Line spectrum of a square-wave signal

Sampling the continuous time analog signal in (a) results in the discrete-time signal in (b).

Material types in electronic:

Energy bands of materials