ECE 300

Linear Circuits: II
Spring 2021

Dr. Jens Bornemann

 Contact Information
 Dr. Jens Bornemann
 Office: EOW 309
 Tel: 250-721-8666
 URL: www.ece.uvic.ca/faculty/jbornemann.shtml
 Office Hours: Mondays and Thursdays, 14:30 – 15:30, via phone,
email, or zoom (link in course outline).
 Course Website: Brightspace
The ECE 300 Course Outline, this Introduction and the Laboratory
Manual are available for download from Brightspace. Lecture notes,
assignments, etc. will be available as we progress. Check twice a week
for new material.

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 ECE 250 — Linear Circuit: I
 Sources, resistors, capacitors, inductors, coupled inductors and ideal
transformer
 Kirchhoff's voltage and current laws
 Series and parallel connections, stored energy, initial values
 Theorems — Linearity, superposition, Thevenin, Norton
 Circuit analysis and design techniques — Node and loop analysis
 Analysis and design of first- and second-order circuits using differential
equations
 Forced and natural responses
 Phasors, impedance, admittance and network theorems using phasors
 Series and parallel resonance
 RMS quantities, complex power, maximum power transfer
 Three-phase circuits, Y- and -loads
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 ECE 260 — Signal Analysis
 Continuous time signals and waveform calculations
 Fourier series in the analysis of periodic signals
 Impulse and other elementary functions
 Resolution of signals into impulse and unit step functions
 Fourier transform in spectral analysis
 Functions of a complex variable
 Analytic functions and partial fractions
 Laplace transform in the representation of signals
 Interrelation between the Fourier and Laplace transforms

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Textbooks

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 Software for Circuit Analysis

Computers in the lab (ELW B324) have two software packages

installed:

 LT Spice
 (Qucs)

Students are supposed to familiarize themselves with LT Spice as it

will be used for labs and can be used for assignments.
The instructions for students to remotely access the lab computers are
at: https://servicecatalog.engr.uvic.ca/services/remotelab/

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 Laboratory Manual
ECE 300 Linear Circuits: II
Poman So and Adam Zielinski
Revised in January 2013

Experiments
Exp-1: Dependent Sources

Exp-2: Frequency Response of Linear Systems

Exp-3: Time-Domain Responses

Exp-4: Analysis and Applications of Active Networks

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 Experiment-1
 To introduce an ideal operational amplifier (op.amp.) and
methods of analyzing circuits with op-amp.
 To construct and test simple dependent sources using an
operational amplifier.

Ro  0

vi Ri   vo  kvi

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 VCVS

v
io

v
R2 RL vo
vi
i2
R1 i1

R1  R2  1 k

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 Experiment-2
 To investigate the frequency response (amplitude and phase) of
linear systems and its relationship with the pole-zero diagram.
 To introduce the logarithmic representation of frequency plots
(Bode plots), and their approximation.
 To design a simple network and investigate its properties in the
frequency domain.

ZR  R

1
X (s ) ZC  Y (s )
sC

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 Bode Plot

1
1 2
H  j 

o 

 45
  j 

 90

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 Straight-Line Bode Plot
Corner frequency
H  j  dB
0 dB
 3 dB Slope = –20dB/dec

 20 dB

0.1 o o 10 o

0

log-scale

 45

 90
  j  12
 Experiment-3
 To familiarize students with an active realization of a second-order
system.
 To study its time-domain response to various excitations.
 To introduce a digital oscilloscope as a convenient device to
capture and display aperiodic signals.

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 A Second-Order System
C1

+
R1 R2 +

x(t ) y (t )
Ra
C2 Rb
Ra G  1
Rb
– –

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 Normalized Step Response of a Second-Order System

a ( )
a ( ) Ov : Overshoot
1


p 
o 

0

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 Experiment-4
 To introduce s-domain network analysis and illustrate it on several
useful active circuits.
 Inverting Voltage Amplifier
 Inverting Adder C
 Inverting Integrator
 Summing Integrator R1
v1 (t )
v2 (t )
R2 vo (t )

(d) Summing Integrator : C  16 nF, R1  R2  10 k

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 Tutorials
 Informal
 Six hours total  four 1 ½ hour tutorials
 Two tutorials will be scheduled before the midterm test
 Two tutorials will be scheduled before the final exam

 Tutor: TBA

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 Do’s and Don’t’s
1. Do NOT leave constants in your final result, i.e., C = 10 0 F
Instead: C = 10 F=10 ⋅ 3.1415 ⋅ 8.854 ⋅10-12 F
0

C = 278pF

2. Do NOT leave the results as C = 2.78 ⋅10-10 F

3. Do NOT present too many digits. R = 3364.245678 

Instead show only those digits that you might be able to measure.
R = 3.364 k

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