ENGR 252
Electrical Circuits & Signals

Course Number & Title:
ENGR 252, "Electrical Circuits & Signals" , 5 Credits
"4 hours of lecture, and 3 hours of lab (Open Lab Schedule)"

Izad Khormaee
email Izad
360-992-2383 (voice)
Schedule (office hours)

Text Books:
Fundamentals of Electrical Circuits (FEC) by Khormaee,   Link to pdf
Signals & Systems Fundamentals (SSF) by Khormaee Link to pdf

Electrical Circuits by Nilsson
Signals & Systems by Oppenheim

Additional Material:
Canvas Learning Management System
An engineering or scientific calculator such as TI-89
USB flash drive

ENGR 204 or ENGR 251

This is the second course in the Electrical Circuit, Signals and Systems 3-course sequence. The student learning objectives are outlined below:

Course Outcomes Assessments Program Outcomes
1. Understanding of Sinusoidal steady-state power calculation Homework, Test AST2-B
2. Application of complex-frequency domain analysis of linear and lumped parameter circuits Homework, Test AST2-B & C
3. Designing and analyzing active and passive filter circuits Homework, Test, Labs AST2-B & C
4. Ability to analyze Two-port circuits Homework, Test AST2-B & C
5. Introduction to signals and LTI systems Homework, Test AST2-A & B
6. Working knowledge of computer tools MatLab, & Pspice Homework, Labs AST2- C
7. Demonstrated ability to work effectively in a team Labs AST2-Foundation


  Lecture Topics   Assignments/Evaluations
FEC Chap 10 . AC Power Analysis
  • Instantaneous, Average, Reactive Power
  • The RMS Value and Power Calculation
  • Complex Power
  • Maximum Power Transfer
FEC Ch 11. Three-Phase Circuits
  • Balanced Three-Phase Voltage
  • Three-Phase Voltage Sources
  • Analysis of the Wye-Wye and Wye-Delta Circuits
  • Power Calculation in Balanced Three-Phase Circuits
  • Measuring Average Power in Three-Phase Circuits
FEC Ch 12. Frequency Selective Circuit RLC Circuit
  • Filter Basics
  • Low-Pass and High-Pass Filters
  • Bandpass and Bandreject Filters
FEC Ch 13. Active Filters
  • First-order Low-Pass and High-Pass Filters
  • Scaling
  • Op Amp Bandpass and Bandreject Filters
  • Higher Order Op Amp Filters
  • Narrowband, Bandpass and Bandreject Filters
  Ch 14. Two-Port Circuit Analysis
  • The Terminal equations
  • The Two-Port Parameters
  • Analysis of the Terminated Two-Port Circuit
  • Interconnected Two-Port Circuits
SSF Ch 1. Introduction to Signals & Systems
  • Continuous-Time and Discrete-Time Signals
  • Transformations of the Independent Variable
  • Exponential & Sinusoidal Signals
  • The Unit-Impulse and Unit Step Functions
  • Continuous-Time and Discrete-Time Systems
  • Basic System Properties
SSF Ch 2. Linear Time-Invariant (LTI) Systems
  • Discrete-Time LTI Systems: The Convolution Sum
  • Continuous-Time LTI Systems: The Convolution Integral
  • Properties of LTI Systems
  • Causal LTI Systems Described by Differential and Difference Equations
  • Singularity Functions
  • Statistical Approach to Noise
  Comprehensive Final Exam - for schedule visit:

Note:   {SS} Preface indicates material from Signal and Systems Text

  • Quizzes (20 points each)
    Each quiz consists of a homework problem and a problem to be solved in-class.
  • Midterm test (100 points)
  • Comprehensive final exam (150 points)
  • Labs Planning, Execution and Reports (20 points each lab)
    Each student is expected to complete the weekly lab assignments during lab time. Even though some labs may be performed as a group, the report must be completed individually, and due on the following lab period.
    Note: In order to be eligible to receive a passing grade for the course, all labs must be completed and turned in prior to final exam date.
  • Service Learning Project (40 points)
    Update project proposal, design project and implement the design. Access ECS club for more information.
Visit ECS Course Policies for additional important and supporting materials.