ENEL220-23W (C) Whole Year 2023

# Circuits and Signals

15 points

Details:
 Start Date: Monday, 20 February 2023 End Date: Sunday, 12 November 2023
Withdrawal Dates
Last Day to withdraw from this course:
• Without financial penalty (full fee refund): Sunday, 19 March 2023
• Without academic penalty (including no fee refund): Sunday, 27 August 2023

## Description

Circuit laws and theorems. Transients and steady state behaviours of resistive, capacitive and inductive circuits. Laplace transforms. Fourier transforms and series. Linear system behaviour.

Topics covered include:
• Fundamentals of charge, voltage, current and power;
• ideal sources;
• current-voltage relationships for basic components;
• modelling of real components;
• Kirchhoff’s voltage and current laws;
• series and parallel combinations;
• nodal and mesh analysis;
• properties of linear networks;
• Thévenin’s theorem, Norton’s theorem, maximum power transfer theorem;
• superposition;
• capacitor and inductor modeling;
• source-free response of RLC circuits;
• 1st and 2nd order RLC circuits, initial conditions, forced response, complete response;
• phasors;
• the Laplace transform;
• frequency response;
• high pass, low pass, bandpass, and bandstop filters;
• complex frequency, pole-zero and Bode plots, resonance;
• trigonometric form of Fourier series, complex form of Fourier series, Fourier transform techniques.

## Learning Outcomes

The course aims to equip you with fundamental circuit analysis skills, especially as they apply to DC, transient and sinusoidal steady-state networks.  The material in this course forms the basis for many other areas of electrical engineering including communications, signal processing, controls, electronics, electromagnetics and power systems.

At the end of this course, the student will be able to:

1. Use the basic DC circuit techniques to find current values, voltage values and power absorption values in a DC circuit containing ideal independent sources, resistors and dependent sources;
2. use practical sources and series/parallel rules to create equivalent circuits as a problem solving tool;
3. find basic Norton and Thévenin equivalent circuits and understand their utility;
4. understand the modelling of inductors and capacitors and their current-voltage relationships;
5. solve basic RL, RC and RLC circuits using established methods and understand how these solutions follow from the basic modeling;
6. be able to perform all the basic techniques (nodal and mesh analysis, superposition, Norton equivalents etc.) using phasors;
7. be able to perform all the basic techniques (nodal and mesh analysis, superposition, Norton equivalents etc.) in the s-domain using Laplace methods;
8. have some understanding of the utility and interpretation of the s-domain,
9. understand the complex plane plotting techniques and their uses for filter design and understanding resonance;
10. describe/define the characteristics of low, high, bandpass and bandstop filters.
11. be able to apply Fourier methods for circuit and signal analysis.

This course will provide students with an opportunity to develop the Graduate Attributes specified below:

 Critically competent in a core academic discipline of their award Students know and can critically evaluate and, where applicable, apply this knowledge to topics/issues within their majoring subject.

## Prerequisites

Subject to the approval of the Dean of Engineering and Forestry

ENEL202

## Timetable 2023

Students must attend one activity from each section.

Activity Day Time Location Weeks Lecture A 01-P1 Tuesday 08:00 - 09:00 A3 Lecture Theatre (21/2-28/3, 25/4-30/5) 20 Feb - 2 Apr 24 Apr - 4 Jun 01-P2 Tuesday 09:00 - 10:00 A6 Lecture Theatre (18/7-22/8, 12/9-17/10) 17 Jul - 27 Aug 11 Sep - 22 Oct Lecture B 01-P1 Friday 13:00 - 14:00 Rata 222 & 223 Drawing Office (24/2-31/3, 28/4-2/6) 20 Feb - 2 Apr 24 Apr - 4 Jun 01-P2 Thursday 08:00 - 09:00 E7 Lecture Theatre (20/7-24/8, 14/9-19/10) 17 Jul - 27 Aug 11 Sep - 22 Oct Presentation A 01 Monday 16:00 - 17:00 Elec 110 Electrical Machines Lab 17 Jul - 23 Jul

## Examination and Formal Tests

Activity Day Time Location Weeks Test A 01 Thursday 18:30 - 19:30 E8 Lecture Theatre 29 May - 4 Jun

## Assessment

Assessment Due Date Percentage
Assignment 1 10%
Assignment 2 10%
Test 40%
Exam 40%

## Textbooks / Resources

Hayt, William H. et al; Engineering circuit analysis ; Ninth edition; McGraw-Hill Education, 2019 (The 7th and 8th Editions are also okay).

## Indicative Fees

Domestic fee \$1,030.00

International fee \$5,750.00

* All fees are inclusive of NZ GST or any equivalent overseas tax, and do not include any programme level discount or additional course-related expenses.

For further information see Electrical and Computer Engineering .

## All ENEL220 Occurrences

• ENEL220-23W (C) Whole Year 2023