Chapter 1 Principles of Electric Circuits, Conventional Flow, 9 th ed.© Spring 2011 Elsarnagawy Principles of Electric Circuit 207 MDE 2010/ /1432 Spring 312 Tarek Elsarnagawy Prof. assoc. Dr. Ing. Tel.: – 497 or 516 Office hours: see time table Lecture # 1

Chapter 1 Principles of Electric Circuits, Conventional Flow, 9 th ed.© Spring 2011 Elsarnagawy Textbook Principles of Electric Circuits: Conventional Current Version, 9/E Thomas L. Floyd ISBN-10: X ISBN-13: Publisher: Prentice Hall Copyright: 2010 Format: Cloth; 992 pp Published: 03/05/2009 Boylestad, Introductory Circuit Analysis, 12/e

Chapter 1 Principles of Electric Circuits, Conventional Flow, 9 th ed.© Spring 2011 Elsarnagawy Evaluation and assessment Assignments5% Seminars/oral5% Quizzes5% Practical 20% Lab exam10% Mid term 1,215% Final40%

Chapter 1 Principles of Electric Circuits, Conventional Flow, 9 th ed.© WS Elsarnagawy Course Syllabus

Chapter 1 Principles of Electric Circuits MDE 207 © Spring Elsarnagawy ► Chapter 1: Quantities and Units ► 1-1 Units of Measurement ► 1-2 Scientific Notation ► 1-3 Engineering Notation and Metric Prefixes ► 1-4 Metric Unit Conversions ► ► Chapter 2: Voltage, Current, and Resistance ► 2-1 Atomic Structure ► 2-2 Electrical Charge ► 2-3 Voltage, Current, and Resistance ► 2-4 Voltage and Current Sources ► 2-5 Resistors ► 2-6 The Electric Circuit ► 2-7 Basic Circuit Measurements ► 2-8 Electrical Safety ► ► Chapter 3: Ohm’s Law ► 3-1 The Relationship of Current, Voltage, and Resistance ► 3-2 Calculating Current ► 3-3 Calculating Voltage ► 3-4 Calculating Resistance ► 3-5 Introduction to Troubleshooting ► A Circuit Application ► Chapter 4: Energy and Power ► 4-1 Energy and Power ► 4-2 Power in an Electric Circuit ► 4-3 Resistor Power Ratings ► 4-4 Energy Conversion and Voltage Drop in Resistance ► 4-5 Power Supplies ► A Circuit Application ► ► Chapter 5 Series Circuits ► 5-1 Resistors in Series ► 5-2 Current in a Series Circuit ► 5-3 Total Series Resistance ► 5-4 Application of Ohm’s Law ► 5-5 Voltage Sources in Series ► 5-6 Kirchhoff’s Voltage Law ► 5-7 Voltage dividers ► 5-8 Power in Series Circuits ► 5-9 Voltage Measurements ► 5-10 Troubleshooting ► A Circuit Application 5 Chapter 6 Parallel Circuits 6-1 Resistors in Parallel 6-2 Voltage in a Parallel Circuit 6-3 Kirchhoff’s Current Law 6-4 Total Parallel Resistance 6-5 Application of Ohm’s Law 6-6 Current Sources in Parallel 6-7 Current Dividers 6-8 Power in Parallel Circuits 6-9 Parallel Circuit Applications 6-10 Troubleshooting A Circuit Application 207 MASH, 312 Course Syllabus

Chapter 1 Principles of Electric Circuits MDE 207 © Spring Elsarnagawy 207 MASH, 312 Course Syllabus ► Chapter 12 Capacitors ► 12-1 The Basic Capacitor ► 12-2 Types of Capacitors ► 12-3 Series Capacitors ► 12-4 Parallel Capacitors ► 12-5 Capacitors in DC Circuits ► 12-6 Capacitors in AC Circuits ► 12-7 Capacitor Applications ► 12-8 Switched-Capacitor Circuits ► A Circuit Application ► ► Chapter 13 Inductors ► 13-1 The Basic Inductor ► 13-2 Types of Inductors ► 13-3 Series and Parallel Inductors ► 13-4 Inductors in DC Circuits ► 13-5 Inductors in AC Circuits ► 13-6 Inductor Applications ► A Circuit Application 6 ► Chapter 11 Introduction to Alternating Current and Voltage\ ► 11-1 The Sinusoidal Waveform ► 11-2 Sinusoidal Voltage Sources ► 11-3 Sinusoidal Voltage and Current Values ► 11-4 Angular Measurement of a Sine Wave ► 11-5 The Sine Wave Formula ► 11-6 Introduction to Phasors ► 11-7 Analysis of AC Circuits ► 11-8 Superimposed DC and AC Voltages ► 11-9 Nonsinusoidal Waveforms ► The Oscilloscope ► A Circuit Application ► A Circuit Application

Chapter 1 Principles of Electric Circuits, Conventional Flow, 9 th ed.© WS Elsarnagawy 7 Quantities and Units

Chapter 1 Principles of Electric Circuits MDE 207 © Spring Elsarnagawy Quantities and Units ► 1-1 Units of Measurement ► 1-2 Scientific Notation ► 1-3 Engineering Notation and Metric Prefixes ► 1-4 Metric Unit Conversions 8

Chapter 1 Principles of Electric Circuits MDE 207 © Spring Elsarnagawy 9 International System of Units “System International d’Unites” SI Fundamental Units Length Mass Time Electric current Temperature Luminous intensity Amount of substance Quantity Unit Symbol Meterm Kilogram kg Seconds AmpereA KelvinK Candelacd Molemol

Chapter 1 Principles of Electric Circuits MDE 207 © Spring Elsarnagawy 10 Some Important Electrical Units Current Charge Voltage Resistance Power AmpereA CoulombC VoltV Ohm  WattW Except for current, all electrical and magnetic units are derived from the fundamental units. Current is a fundamental unit. Quantity Unit Symbol

Chapter 1 Principles of Electric Circuits MDE 207 © Spring Elsarnagawy 11 Some Important Magnetic Units All magnetic units are derived from the fundamental units. These units are discussed in Chapter 10. Magnetic field intensity H Magnetic flux  Magnetic flux density B Magnetomotive force F m Permeability  Ampere-turns/meter At/m Weber Wb Tesla T Ampere-turn At Webers/ampere-turns-meter Wb/At. m Ampere-turns/weber At/Wb Reluctance R Quantity SymbolUnit Symbol

Chapter 1 Principles of Electric Circuits MDE 207 © Spring Elsarnagawy ENGINEERING NOTATION ► Engineering notation specifies that all powers of ten must be 0 or multiples of 3, and the tens unit must be greater than or equal to 1 but less than 1000.

Chapter 1 Principles of Electric Circuits MDE 207 © Spring Elsarnagawy FIXED-POINT, FLOATING-POINT, SCIENTIFIC, AND ENGINEERING NOTATION Prefixes

Chapter 1 Principles of Electric Circuits MDE 207 © Spring Elsarnagawy 14 Engineering Metric Prefixes peta tera giga mega kilo P T G M k Can you name the prefixes and their meaning?

Chapter 1 Principles of Electric Circuits MDE 207 © Spring Elsarnagawy 15 Engineering Metric Prefixes milli micro nano pico femto m  n p f Can you name the prefixes and their meaning?

Chapter 1 Principles of Electric Circuits MDE 207 © Spring Elsarnagawy SYMBOLS

Chapter 1 Principles of Electric Circuits MDE 207 © Spring Elsarnagawy 17 Very large and very small numbers are represented with scientific and engineering notation. Scientific and Engineering Notation 47,000,000 = 4.7 x 10 7 (Scientific Notation) = 47. x 10 6 (Engineering Notation)

Chapter 1 Principles of Electric Circuits MDE 207 © Spring Elsarnagawy = 2.7 x (Scientific Notation) = 27 x (Engineering Notation) = 6.05 x (Scientific Notation) = 605 x (Engineering Notation) Scientific and Engineering Notation

Chapter 1 Principles of Electric Circuits MDE 207 © Spring Elsarnagawy 19 When converting from a larger unit to a smaller unit, move the decimal point to the right. Remember, a smaller unit means the number must be larger. Metric Conversions 0.47 M  = 470 k  Larger number Smaller unit

Chapter 1 Principles of Electric Circuits MDE 207 © Spring Elsarnagawy 20 When converting from a smaller unit to a larger unit, move the decimal point to the left. Remember, a larger unit means the number must be smaller. Metric Conversions 10,000 pF = 0.01  F Smaller number Larger unit

Chapter 1 Principles of Electric Circuits MDE 207 © Spring Elsarnagawy 21 When adding or subtracting numbers with a metric prefix, convert them to the same prefix first. Metric Arithmetic 10,000  + 22 k  = 10,000  + 22,000  = 32,000  Alternatively, 10 k  + 22 k  = 32 k 

Chapter 1 Principles of Electric Circuits MDE 207 © Spring Elsarnagawy 22 When adding or subtracting numbers with a metric prefix, convert them to the same prefix first. Metric Arithmetic 200  mA = 200  A + 1,000  A = 12,000  A Alternatively, m  mA = 1.2 mA

Chapter 1 Principles of Electric Circuits MDE 207 © Spring Elsarnagawy 23 Most work in electronics involves measurements, which always have error. You should report only digits that are reasonably assumed to be accurate. Significant Figures

Chapter 1 Principles of Electric Circuits MDE 207 © Spring Elsarnagawy 24 Significant Figures 1.Nonzero digits are always considered to be significant. 2. Zeros to the left of the first nonzero digit are never significant. 3. Zeros between nonzero digits are always significant. 4. Zeros to the right of the decimal point for a decimal number are never significant. 5. Zeros to the left of the decimal point with a whole number may or may not be significant depending on the measurement Looking at the rule, decide how many significant figures in each of the examples, which are given with a rule:

Chapter 1 Principles of Electric Circuits MDE 207 © Spring Elsarnagawy 25 Quiz 1. A resistor is an example of a. a passive component b. an active component c. an electrical circuit d. all of the above

Chapter 1 Principles of Electric Circuits MDE 207 © Spring Elsarnagawy 26 Quiz 2. The electrical unit that is fundamental is the a. volt b. ohm c. coulomb d. ampere

Chapter 1 Principles of Electric Circuits MDE 207 © Spring Elsarnagawy 27 Quiz 3. In scientific notation, the number is written a. 5.6 x 10 4 b. 5.6 x c. 56 x d. 560 x 10 -6

Chapter 1 Principles of Electric Circuits MDE 207 © Spring Elsarnagawy 28 Quiz 4. In engineering notation, the number is written a. 5.6 x 10 4 b. 5.6 x c. 56 x d. 560 x 10 -6

Chapter 1 Principles of Electric Circuits MDE 207 © Spring Elsarnagawy 29 Quiz 5. The metric prefix nano means a b c d

Chapter 1 Principles of Electric Circuits MDE 207 © Spring Elsarnagawy 30 Quiz 6. The metric prefix pico means a b c d

Chapter 1 Principles of Electric Circuits MDE 207 © Spring Elsarnagawy 31 Quiz 7. The number 2700 MW can be written a. 2.7 TW b. 2.7 GW c. 2.7 kW d. 2.7 mW

Chapter 1 Principles of Electric Circuits MDE 207 © Spring Elsarnagawy 32 Quiz 8. The value 68 k  is equal to a. 6.8 x 10 4  b. 68, 000  c M  d. All of the above

Chapter 1 Principles of Electric Circuits MDE 207 © Spring Elsarnagawy 33 Quiz 9. The sum of 330 mW W is a mW b W c W d W

Chapter 1 Principles of Electric Circuits MDE 207 © Spring Elsarnagawy 34 Quiz 10. The quantity 200  V is the same as a V b. 20 mV c. 0.2 V d. all of the above

Chapter 1 Principles of Electric Circuits MDE 207 © Spring Elsarnagawy 35 Answers: 1. a 2. d 3. b 4. d 5. c 6. d 7. b 8. d 9. d 10. a Quiz