ENEL220-19W (C) Whole Year 2019

Circuits and Signals

15 points

Start Date: Monday, 18 February 2019
End Date: Sunday, 10 November 2019
Withdrawal Dates
Last Day to withdraw from this course:
  • Without financial penalty (full fee refund): Friday, 15 March 2019
  • Without academic penalty (including no fee refund): Friday, 23 August 2019


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;
• transients and 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, circuit analysis using Fourier series expansion, Fourier transform techniques.

Learning Outcomes

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

  • 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;
  • use practical sources and series/parallel rules to create equivalent circuits as a problem solving tool;
  • find basic Norton and Thévenin equivalent circuits and understand their utility;
  • understand the modeling of inductors and capacitors and their current-voltage relationships;
  • solve basic RL, RC and RLC circuits using established methods and understand how these solutions follow from the basic modeling;
  • be able to perform all the basic techniques (nodal and mesh analysis, superposition, Norton equivalents etc.) in the s-domain using Laplace methods;
  • have some understanding of the utility and interpretation of the s-domain,
  • understand the complex plane plotting techniques and their uses for filter design and understanding resonance;
  • describe/ define the characteristics of low, high, bandpass and bandstop filters.
  • design passive filters with specific corner or cutoff frequencies.
  • be able to apply Fourier methods for circuit and signal analysis.


Subject to the approval of the Dean of Engineering and Forestry



Course Coordinator

For further information see Electrical and Computer Engineering Head of Department


Assessment Due Date Percentage 
Homework 10%
Mid Year Exam 40%
End of Year Exam 50%

Indicative Fees

Domestic fee $956.00

International fee $5,250.00

* 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

  • ENEL220-19W (C) Whole Year 2019