Rowan Hall 238A

beard@rowan.edu

http://rowan.jkbeard.com

September 5, 2006

Networks I for M.E.ECE 09.201 - 2

James K. Beard, Ph.D.

Slide 2

Welcome to Networks I Learning Objectives –

Define circuit elementsMaster Ohm’s Law, Kirchoff’s Laws, etc.Analyze electrical circuitsApply 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

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

Slide 4

Learning Check #1

List 2 learning objectives of the course: Networks 1

Slide 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)

Slide 6

Cruise course website

Website : http://users.rowan.edu/~jansson/autumn06/Networks1/

index.html

Slide 7

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

Learning Evaluation

GradesTests (3 @ 20%) – 60%,Assignments (40%)LECTURE:

In-Class LCs, HW and Participation (20%)

LABS: Reports, HW, etc. (20%)

Slide 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….

Slide 10

Let’s stand up….

Put down your pencils …. For the name game

NOTE: Very important learning aid is each other

Slide 11

Learning Check #3

List 3 names of colleagues that you did not know before today

Slide 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

Slide 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

Slide 14

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

That world would be

Primitive Difficult to survive in A very hard life……

Slide 16

Learning Check #4

List 2 important electric technologies that have improved the quality of life for human beings on Earth:

Slide 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

Slide 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

Slide 19

Electric Technology

1825First Electromagnet 1832First E-M Induction Generator 1837Telegraph 1879First DC Power System 1888First AC Generator 1895X-rays Discovered 1901Radio

Slide 20

Quotable Quotes

Heavier than air flying machines are impossibleLord Kelvin – Royal Society 1895

There is no likelihood man can ever tap the power of the atomRobert Milliken Nobel Laureate Physics 1923

Slide 21

Discovery continues

AC Electric Grids - 1900s Fluorescent Lighting - 1930s Computing – 1930s Television, transistors – 1940s Chips – 1960s Personal Computing - 1970s Internet – 1990 21st Century ?

Slide 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?

Slide 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

Battery Resistor

i1

Where is ground?

Slide 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

Pump Constriction

Where is 0 psi?

1m

Slide 25

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

i1 i2dt

dqi 21 ii

Slide 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

dmm

dt 1 2m m

1m 2m

Slide 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)

Slide 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