Networks I for M.E. ECE 09.201 - 2

1. Networks I for M.E.ECE 09.201 - 2 James K. Beard, Ph.D.

2. Welcome to Networks I • Learning Objectives – • Define circuit elements • Master Ohm’s Law, Kirchoff’s Laws, etc. • Analyze electrical circuits • Apply circuit parameters (v, i, r, p, etc.) • Analyze DC circuits with passive elements including: resistance, energy storage (C,L) • Build/Model circuits using MentorGraphics and MatLab Networks I for M.E.

3. Learning Aids: Overview • Lectures – Monday & Tuesday Rowan 239 • Laboratories – Rowan Hall Room 204/6 - 221 • One Lab Section – Mondays 3.15-6.00 pm • Syllabus/Text (read ahead – ch. 1/2) • Computer Tools • Learning Checks • Website • Email Networks I for M.E.

4. Learning Check #1 • List 2 learning objectives of the course: Networks 1 Networks I for M.E.

5. Learning Aids: • Required Text : • Introduction to Electric Circuits • 7th Edition • Dorf and Svoboda • Websites : • http://users.rowan.edu/~beard/ • http://rowan.jkbeard.com (maps to same Rowan server) • http://users.rowan.edu/~jannson/ (Peter Jannson, course owner) • Check your Email regularly (daily) Networks I for M.E.

6. Cruise course website • Website : • http://users.rowan.edu/~jansson/autumn06/Networks1/index.html Networks I for M.E.

7. Learning Check #2 • List the 2 learning aids of the course Networks 1 that you think you will find most helpful to you: Networks I for M.E.

8. Learning Evaluation • Grades • Tests (3 @ 20%) – 60%, • Assignments (40%) • LECTURE: • In-Class LCs, HW and Participation (20%) • LABS: • Reports, HW, etc. (20%) Networks I for M.E.

9. How do we learn? • Hearing • Seeing • Reading • Doing • Other? • Do you think you can learn most everyone’s name (15+) in this room in <10 minutes? • Let’s Experiment…. Networks I for M.E.

10. Let’s stand up…. • Put down your pencils …. • For the name game • NOTE: Very important learning aid is each other Networks I for M.E.

11. Learning Check #3 • List 3 names of colleagues that you did not know before today Networks I for M.E.

12. Chapter 1 – Overview • History of electricity • Electric circuits and current flow • Systems of units • Voltage • Power and energy • Voltmeters and ammeters • Circuit analysis and design Networks I for M.E.

13. Imagine a World with.. • No internet • No cell phones • No computers • No television or video games • No mass communication (radio, telephone) • No tall buildings Networks I for M.E.

14. Imagine a World with.. • No electricity • No electronic devices • No medical technology • No appliances • Refrigerators • Microwaves • Water heaters • Air conditioning • No traffic controls Networks I for M.E.

15. That world would be • Primitive • Difficult to survive in • A very hard life…… Networks I for M.E.

16. Learning Check #4 • List 2 important electric technologies that have improved the quality of life for human beings on Earth: Networks I for M.E.

17. Electrical Engineers Transformed Society • Long, long ago in countries far, far away the journey began….. • 2637 BC – Hoang-Ti’s magnetic chariot • 1110 BC – Tchi-nan magnetic compass • 600 BC – Etruscans control lightning • 250 BC – Flying Cupid in Diana’s temple • 658 AD – Japan’s first magnetic cars http://www.ph.utexas.edu/~ps304/History%20of%20electricity.htm Networks I for M.E.

18. Electrical Science Emerges • 600 BC Attractive power of E-S materials • 1551 AD Electricity and Magnetism defined • 1672 Pointed Conductors • 1720 Grey’s Planetarium • 1746 Atmospheric Electricity discovered • 1814 Electrical Spectrum detailed • 1821 First Electric Motor Networks I for M.E.

19. Electric Technology • 1825 First Electromagnet • 1832 First E-M Induction Generator • 1837 Telegraph • 1879 First DC Power System • 1888 First AC Generator • 1895 X-rays Discovered • 1901 Radio Networks I for M.E.

20. Quotable Quotes • Heavier than air flying machines are impossible • Lord Kelvin – Royal Society 1895 • There is no likelihood man can ever tap the power of the atom • Robert Milliken Nobel Laureate Physics 1923 Networks I for M.E.

21. Discovery continues • AC Electric Grids - 1900s • Fluorescent Lighting - 1930s • Computing – 1930s • Television, transistors – 1940s • Chips – 1960s • Personal Computing - 1970s • Internet – 1990 • 21st Century ? Networks I for M.E.

22. Learning Check #5 • Of the electrical discoveries described in the last 3 slides, which was the most significant in terms of impact on modern human society? Networks I for M.E.

23. Electric Circuits & Current Flow • An electric circuit is an interconnection of circuit elements linked together to form a closed path so that electric current may flow continuously i1 Resistor Battery Where is ground? Networks I for M.E.

24. Hydraulic Analogy • An electric circuit is an interconnection of circuit elements linked together to form a closed path so that electric current may flow continuously Constriction Pump Where is 0 psi? Networks I for M.E.

25. i1 i2 Electric Circuits & Current Flow • Current is the time rate of flow of electric charge (q) past a given point • Use lower case to indicate a time varying current and upper case to indicate a constant or direct current Networks I for M.E.

26. Hydraulic Analogy • Flow rate is the time rate of flow of mass (m) past a given point • Use lower case to indicate a time varying flow rate and upper case to indicate a constant flow rate Networks I for M.E.

27. Units • Systeme International d’Unites • Base Units (m, kg, s, A, K, mol, cd) • Derived Units (J, W, C, V, Ω, S, F, Wb, H) • What are base units for Energy (J) and Power (W) Networks I for M.E.

28. Assignment • Read Dorf & Svoboda Chapter 1 • Read Dorf & Svoboda Chapter 2 • Get your UNIX logons working and check them • UNIX lab 221 • Elvis, a UNIX application server • Must be done by Monday, September 11 • Get help by e-mail to Mike Ciocco Networks I for M.E.