01-Basic Concepts-Units, Power

# 01-Basic Concepts-Units, Power - Introduction Basic...

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1 Introduction+ Basic Concepts: Units, Signs, Power, Passive Sign Convention © Prof. Fred Terry Dept of EECS, University of Michigan Fall, 2008

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2 Introductory Comments • The major objective of 215 is for you to understand how linear circuits work and how to analyze them – The objective is NOT to train you in a set of procedures that you apply through pattern recognition. Computer software already exists to do this and it’s cheaper than you! • While many interesting applications require nonlinear as well as linear circuits, our understanding of linear circuits provides an outstanding basis for understanding all electrical systems • The tools of linear circuit analysis are applied in other linear systems analysis problems, including mechanical, fluidic, and thermal systems.
3 The New 215 We will examine some important aspects of transistor circuit analysis – You will not become expert designers (go to 311, 312, and later classes for that) – You will get some of the key concepts in transistor circuits for analog and digital electronics – Some analysis of piecewise linear circuits rather than purely linear ones Less Emphasis on Transient Response of RLC Circuits – All major concepts still introduced but some mathematical analysis issues left for EECS 216 – We will cover some basic aspects of differential equations for those that have not had Math 216 yet Physics 240/260 is a co-req Fewer Labs (6 vs. 12) Discussion Sections

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4 Introductory Comments • This class will use relatively few basic concepts and rules, but they must be used correctly and logically. – Some find this good, but remember that E&M uses only 4 equations (Maxwell’s) and (non-relativistic) quantum mechanics uses only one (Schrodinger’s). How many statement types are there in C++? • All the problems assigned for homeworks and exams will have one and only one answer (and often you can compute it exactly). Usually, it is possible to check your final answers to see if you satisfy all the circuit rules (If you do, you know the answer is correct. If you don’t, you know you are not right).
5 Introductory Comments • Exams will be constructed so that most points come from correctly specifying the equations that you must solve for the final answer. Mistakes in the setup indicate problems in physical understanding. Relatively few points will be assigned for final numerics. • However, calculators which perform complex number & matrix calculation (ex. TI-89) will be allowed on exams. Sometimes it is advantage to be able crunch the numbers, find an error, and then go back. However, random button pushing will never get you there!

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6 Basic Concepts: Units • All EE Circuit Work uses Volts, Amperes (Amps), Coulombs, Ohms, Farads, Henrys, Webers, seconds, etc. from the MKS units system ( Système International d'Unités or SI units) Alexander & Sadiku , while good in many respects, is SLOPPY about the USE of Units as a Check.
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01-Basic Concepts-Units, Power - Introduction Basic...

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