ECEN 2260, Circuits/Electronics 2, Spring 2007

ECEN 2260 - Circuits/Electronics 2

Class: MWF 9-9:50 pm, ECCR 245
Lab (Section 1): TR 10-11:50 am, ECEE 281, Call #: 14076
Lab (Section 2): TR 12-1:50 pm, ECEE 281, Call #: 14077
Lab (Section 3): TR 2-3:50 pm, ECEE 281, Call #: 14078
Instructor: Professor Peter Mathys, ECOT 334, 303-492-7733, Fax: 303-492-2758, e-mail:
Office Hours: MWF 12 noon - 1:50 pm and by appointment.
TAs: Manav, e-mail: . and Elliot Johnson .

Text: Roland E. Thomas and Albert J. Rosa, The Analysis and Design of Linear Circuits, 5th Edition, John Wiley & Sons, 2006, ISBN 0-471-76095-1.

Description: This course is the continuation of ECEN 2250, Circuits/Electronics 1. It is assumed that students taking this class are familiar with basic circuit analysis techniques, OpAmps, first order RL and RC circuits, first order differential equations, and phasors. The goal of Circuits 2 is to extend these concepts initially to second order circuits consisting either of two interconnected RC or RL circuits, or consisting of R, L, and C. Successively more sophisticated techniques, such as block diagrams, Laplace transforms, system functions, frequency response and Bode plots, unit impulse response, and Fourier series are introduced to analyze and synthesize second order and eventually higher order analog circuits for signal processing and control. Emphasis is placed on showing how the different techniques relate to each other and how they complement each other. Weekly lab experiments are designed to reinforce the material discussed in class by applying it to the analysis, synthesis, measurement, and simulation of practical circuits. PSpice is used for simulations and Matlab, together with computer soundcards, is used to measure, process, and visualize the data obtained from real circuits.
In a nutshell, Circuits 1 is an introduction to analog circuits in general, and Circuits 2 is an introduction to analog circuits and systems for signal processing and control applications.

Concepts Covered:
1. First Order RC/RL Circuits (Review): 1'st Order Differential Equations, Step Response, Sinusoidal Steady-State Response Using Phasors (Chapters 7, 8)
2. Second Order Circuits: RLC Series/Parallel Circuits, RRCC Circuits, Step Response, Sinusoidal Steady-State Response Using Phasors, Block Diagram of General 2'nd Order Circuits (Chapters 7, 8)
3. Laplace Transforms: Definition, Basic Transform Pairs, Properties of Laplace Transform, Poles and Zeros, Inverse Laplace Transform (Chapter 9)
4. s-Domain Circuit Analysis: Element Constraints, Impedance, Basic Circuit Analysis and Block Diagrams in s-Domain (Chapter 10)
5. System Functions: Definition of System (or Network or Transfer) Functions for One- and Two-Port Networks, Poles and Zeros, Relationship to Impulse, Step, and Sinusoidal Steady-State Responses, System Function Synthesis (Chapter 11)
6. Frequency Response: Definition, Frequency Response of First and Second Order Circuits, Bode Diagrams (Chapter 12)
7. Fourier Series: Definition, Properties, Fourier Series Pairs, Waveform Symmetries, Parseval's Tehorem (Chapter 13)
8. Analog Filter Design: First and Second Order Circuit Designs, Butterworth and Chebyshev Low-Pass Filters, High-Pass, Band-Pass and Band-Stop Filters (Chapter 14)
9. Interconnected Systems and Feedback: Block Diagrams, Series and Parallel Connections, Simple Feedback Loops, Effects of Negative Feedback (Additional Notes)

Course Requirements:
1. Homework (~10%): Weekly, usually due on Wednesdays at the beginning of class. Only one problem, selected at random, will be graded.
2. Quizzes (~15%): Approx. weekly (on reading assignments, previous lectures, homeworks, etc). Closed book, closed notes.
3. Exam 1 (~10%): Fri. Feb. 9. Closed book, closed notes.
4. Exam 2 (~10%): Fri. Mar. 9. Closed book, closed notes.
5. Exam 3 (~10%): Fri. Apr. 13. Closed book, closed notes.
6. Recitation (~5%): Weekly, 1 hr on Tuesdays. Will be used to discuss problems related to homework.
7. Labs (~20%): Weekly Tue. and Thu. A lab worksheet needs to be filled out after the completion of each lab. Some labs, including a design project, extend over two weeks. You will need your Lab Kit from previous semesters (spare parts available at E-store ECEE 1B10).
8. Final Exam (~20%), according to Final Exam Schedule: Tue. May 8, 7:30 - 10:00 am. Closed book, closed notes.

Design Project: The last lab will be a design project. Design, implement, and measure a practical second or higher order circuit of your choice. Get ideas for circuits from problem sets in the book, application notes from integrated circuit manufacturers, or books with circuit collections. If you need extra parts, try Radio Shack and J.B. Saunders (4700 Sterling Dr, Boulder, CO 80301), or go to the E-store in ECEE 1B10. If the project that your lab group chooses is large, you may join up with another lab group to complete it.