Rowan Hall 238A September 5, 2006 Networks I for M.E. ECE James K. Beard, Ph.D.

Slide 2 Networks I for M.E. September 5, 2006 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

Slide 3 Networks I for M.E. September 5, 2006 Learning Aids: Overview Lectures – Monday & Tuesday Rowan 239 Laboratories – Rowan Hall Room 204/ One Lab Section – Mondays pm Syllabus/Text (read ahead – ch. 1/2) Computer Tools Learning Checks Website

Slide 4 Networks I for M.E. September 5, 2006 Learning Check #1 List 2 learning objectives of the course: Networks 1

Slide 5 Networks I for M.E. September 5, 2006 Learning Aids: Required Text :  Introduction to Electric Circuits  7 th Edition  Dorf and Svoboda Websites :   (maps to same Rowan server)  (Peter Jannson, course owner) Check your regularly (daily)

Slide 6 Networks I for M.E. September 5, 2006 Cruise course website Website :  x.html

Slide 7 Networks I for M.E. September 5, 2006 Learning Check #2 List the 2 learning aids of the course Networks 1 that you think you will find most helpful to you:

Slide 8 Networks I for M.E. September 5, 2006 Learning Evaluation Grades  Tests 20%) – 60%,  Assignments (40%)  LECTURE: In-Class LCs, HW and Participation (20%)  LABS: Reports, HW, etc. (20%)

Slide 9 Networks I for M.E. September 5, 2006 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….

Slide 10 Networks I for M.E. September 5, 2006 Let’s stand up…. Put down your pencils …. For the name game NOTE: Very important learning aid is each other

Slide 11 Networks I for M.E. September 5, 2006 Learning Check #3 List 3 names of colleagues that you did not know before today

Slide 12 Networks I for M.E. September 5, 2006 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

Slide 13 Networks I for M.E. September 5, 2006 Imagine a World with.. No internet No cell phones No computers No television or video games No mass communication (radio, telephone) No tall buildings

Slide 14 Networks I for M.E. September 5, 2006 Imagine a World with.. No electricity No electronic devices No medical technology No appliances  Refrigerators  Microwaves  Water heaters  Air conditioning No traffic controls

Slide 15 Networks I for M.E. September 5, 2006 That world would be Primitive Difficult to survive in A very hard life……

Slide 16 Networks I for M.E. September 5, 2006 Learning Check #4 List 2 important electric technologies that have improved the quality of life for human beings on Earth:

Slide 17 Networks I for M.E. September 5, 2006 Electrical Engineers Transformed Society Long, long ago in countries far, far away the journey began… 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

Slide 18 Networks I for M.E. September 5, 2006 Electrical Science Emerges 600 BCAttractive power of E-S materials 1551 ADElectricity and Magnetism defined 1672Pointed Conductors 1720Grey’s Planetarium 1746 Atmospheric Electricity discovered 1814Electrical Spectrum detailed 1821First Electric Motor

Slide 19 Networks I for M.E. September 5, 2006 Electric Technology 1825First Electromagnet 1832First E-M Induction Generator 1837Telegraph 1879First DC Power System 1888First AC Generator 1895X-rays Discovered 1901Radio

Slide 20 Networks I for M.E. September 5, 2006 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

Slide 21 Networks I for M.E. September 5, 2006 Discovery continues AC Electric Grids s Fluorescent Lighting s Computing – 1930s Television, transistors – 1940s Chips – 1960s Personal Computing s Internet – st Century ?

Slide 22 Networks I for M.E. September 5, 2006 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?

Slide 23 Networks I for M.E. September 5, 2006 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 Battery Resistor i1i1 Where is ground?

Slide 24 Networks I for M.E. September 5, 2006 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 Pump Constriction Where is 0 psi?

Slide 25 Networks I for M.E. September 5, 2006 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 i1i1 i2i2

Slide 26 Networks I for M.E. September 5, 2006 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

Slide 27 Networks I for M.E. September 5, 2006 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)

Slide 28 Networks I for M.E. September 5, 2006 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 to Mike Ciocco