EE40 Lecture 1 Venkat Anantharam 1 23 08 Reading Chap 1 EE40 Spring 08 Slide 1 Venkat Anantharam EE 40 Course Overview EECS 40 One of five EECS core courses with 20 61A 61B and 61C introduces hardware side of EECS prerequisite for EE105 EE130 EE141 EE150 Prerequisites Math 1B Physics 7B Course involves three hours of lecture one hour of discussion and three hours of lab work each week Course content Fundamental circuit concepts and analysis techniques First and second order circuits impulse and frequency response Op Amps Diode and FET Device and Circuits Amplification Logic Filter Text Book Electrical Engineering Principles and Applications Allan R Hambley Pearson Prentice Hall 4th Edition Supplementary Reader written by Prof Chang Hasnain EE40 Spring 08 Slide 2 Venkat Anantharam Instructor Venkat Anantharam Office 271 Cory Hall Office hours M 2 3 Th 3 4 All emails to me should be forwarded by the Head GSI Head GSI Bart mbharat cory eecs berkeley edu EE40 Spring 08 Slide 3 Venkat Anantharam Important DATES Office hours Discussion and Lab Sessions will start on week 2 Stay with the Discussion and Lab session you registered for 3 tests and 1 Final Tests In Class Friday 2 22 Wednesday 3 19 Wednesday 5 7 Location 10 Evans maybe another location TBA Final 12 30 3 30 pm Friday 5 16 2008 Exam Group 5 Location to be announced Best Final Project Contest Monday 5 12 6 8 pm Location TBA Winning projects will be displayed on the second floor in Cory Hall EE40 Spring 08 Slide 4 Venkat Anantharam Grading Policy Weights 9 10 HW sets drop one lowest point hence each is worth 1 18 10 Labs 7 structured experiments each is worth 1 5 one 3 week final project 7 5 39 3 tests each one is worth 13 34 Final exam No late HW or Lab reports accepted No make up exams Departmental grading policy A typical GPA for courses in the lower division is 2 7 This GPA would result for example from 17 A s 50 B s 20 C s 10 D s and 3 F s EE40 Spring 08 Slide 5 Venkat Anantharam Grading Policy Cont d Weekly HW Assignment on the web by 5 pm Fridays starting 1 25 07 Due 5 pm the following Friday in HW box 240 Cory On the top page right top corner write your name in the form Last Name First Name with discussion session number Graded homework will be returned one week later in discussion sessions Labs Each lab is graded with 30 on Prelab and 70 on Report You must complete the prelab section before going to the lab The prelabs are checked by the GSIs at the beginning of each session If prelabs are completed during the lab sessions it is considered late and 50 will be deducted Lab reports are due exactly one week after your lab is completed It is your responsibility to check with the head GSI from time to time to make sure all grades are entered correctly EE40 Spring 08 Slide 6 Venkat Anantharam Classroom Rules Please come to class on time Lectures will be web cast However problems do occur and portions of the webcast have been missed in previous semesters Turn off cell phones pagers radio CD DVD etc No food and No pets Do not move in and out of or around the classroom EE40 Spring 08 Slide 7 Venkat Anantharam Chapter 1 Outline Electrical quantities Charge Current Voltage Power Sign conventions The ideal basic circuit element Circuit element I V characteristics Construction of a circuit model Kirchhoff s Current Law Kirchhoff s Voltage Law EE40 Spring 08 Slide 8 Venkat Anantharam Electric Charge Electrical effects are due to separation of charge electric force voltage charge distance charges in motion electric flow current Macroscopically most matter is electrically neutral most of the time Exceptions clouds in a thunderstorm people on carpets in dry weather plates of a charged capacitor etc Microscopically matter is full of electric charges Electric charge exists in discrete quantities integral multiples of the electronic charge 1 6 x 10 19 Coulomb EE40 Spring 08 Slide 9 Venkat Anantharam Etymology The word electric is derived from the Greek elektron Latin electrum denoting amber It was discovered in ancient times that when amber is rubbed it attracts feathers dried leaves etc This is due to the amber becoming charged discovered much later These are the roots of our subject EE40 Spring 08 Slide 10 Venkat Anantharam Electric Current Definition rate of positive charge flow Symbol i Units Coulombs per second Amperes A Note Current has polarity i dq dt where q charge Coulombs t time in seconds Andr Marie Amp re 1775 1836 EE40 Spring 08 Slide 11 Venkat Anantharam Electric Potential Voltage Definition energy per unit charge Symbol v Units Joules Coulomb Volts V v dw dq Alessandro Volta 1745 1827 where w energy in Joules q charge in Coulombs Note Potential is always referenced to some point a b EE40 Spring 08 Subscript convention vab means the potential at a minus the potential at b vab va vb Slide 12 Venkat Anantharam The Ideal Basic Circuit Element i v Polarity reference for voltage can be indicated by plus and minus signs Reference direction for the current is indicated by an arrow Attributes Two terminals points of connection Mathematically described in terms of current and or voltage Cannot be subdivided into other elements EE40 Spring 08 Slide 13 Venkat Anantharam Circuit Elements 5 ideal basic circuit elements voltage source current source resistor inductor capacitor active elements capable of generating electric energy passive elements incapable of generating electric energy Many practical systems can be modeled with just sources and resistors The basic analytical techniques for solving circuits with inductors and capacitors are similar to those for resistive circuits EE40 Spring 08 Slide 14 Venkat Anantharam
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