EEL 3300 Introduction to Electronics
Unit 11
Resistor - Diode DC Circuits
Part 4: Zener Diodes in DC Circuit
Introduction
Special type of diodes, called Zener Diodes, utilize the diode's breakdown effect, at a
negative diode voltage. The voltage-current c
EEL 3300 Introduction to Electronics
Unit 11
Resistor - Diode DC Circuits
Part 2: Multi-Diode DC Circuits
Whenever we have multiple diodes in a circuit, we need to make an assumption regarding
the state of each diode. It may seem tedious to go through all
EEL 3300 Introduction to Electronics
Unit 11
Resistor - Diode DC Circuits
Part 3: A Non-trivial Example of Diode DC Circuit
The example below is a little less trivial, in the sense that even an experienced engineer
may not be able to tell off-hand at whic
EEL 3300 Introduction to Electronics
Unit 11
Resistor - Diode DC Circuits
Part 1: Single Diode DC Circuits
Example 1: In the following simple resistor-diode circuit find the current i and the
voltage vo across the diode: a) Assuming that the diode is idea
Unit 11: Resistor-Diode DC Circuits
Objectives:
Readings:
1) Learn about the strategy of solving diode-resistor DC circuits: Need to
make assumptions regarding the diodes' states (ON or OFF), and then
check if assumptions hold.
2) Learn about the role pla
EEL 3300 Introduction to Electronics
Unit 8
Astable Multivibrator (Square-Wave Oscillator)
Part 3: Astable Multivibrator Operation - Period Computation
Quantitative analysis of the Astable Multivibrator Computation of the oscillators
period
For convenienc
EEL 3300 Introduction to Electronics
Unit 8
Astable Multivibrator (Square-Wave Oscillator)
Part 2: Astable Multivibrator Operation - Qualitative Explanation
Let us assume that at t=0 the capacitor is fully discharged and has a voltage of 0.
Question: If i
EEL 3300 Introduction to Electronics
Unit 8
Astable Multivibrator (Square-Wave Oscillator)
Part 1: Capacitor Charging and Op-Amp Circuits Classification
Goal: Design a square-wave voltage oscillator fixed amplitude and a frequency that can
be varied.
Pre-
Unit 8: Astable Multivibrator (Square-Wave Oscillator)
Objectives:
1) Deepen the understanding of comparators with two threshold levels
2) Review capacitor charging and discharging operation
3) Learn about the basic operation, applications and design of a
EEL 3300 Introduction to Electronics
Unit 7
Comparators and Schmitt Triggers
Part 4: Schmitt Trigger
What is the main drawback of comparators?
Switching based on a single threshold level is prone to noise. The graphs below illustrate
the difficulty. Let t
EEL 3300 Introduction to Electronics
Unit 7
Comparators and Schmitt Triggers
Part 2: AC to Square-wave Conversion Using Comparators
The following examples illustrate the comparators ability to switch output values,
depending on the changing nature of the
EEL 3300 Introduction to Electronics
Unit 7
Comparators and Schmitt Triggers
Part 1: Basic Theory of Comparators
Comparators
Comparator circuits take advantage of the extremely high open loop gain of an op-amp.
The following is a simple comparator circuit
EEL 3300 Introduction to Electronics
Unit 7
Comparators and Schmitt Triggers
Part 3: Comparator Applications
So, why do we need comparators? What are the applications for comparing one signal to
another?. .
A comparator that jumps from one output level to
Unit 7: Comparators and Schmitt Triggers
Objectives:
1) Discover that op-amp circuits work in one of two modes: Amplifier Mode
or Comparator Mode. Both modes are equally important
2) Learn about the basic operation, applications and design of a
comparator
EEL 3300 Introduction to Electronics
Unit 6
PSPICE: Filters and Differential Amplifiers
Part 1: PSPICE Tutorial - AC Sweep
AC Sweep is used to find frequency response plots of circuits. We shall first elaborate on
the mere "mechanics" of AC Sweep. It will
EEL 3300 Introduction to Electronics
Unit 6
Filters and Differential Amplifiers
Part 3: Low-pass Filtering Action - Time Domain Verification
Example 3: Time-Domain study of Low-pass Filtering
This is a follow-up to Example 2 (Unit 6 Part 2). Let us replac
EEL 3300 Introduction to Electronics
Unit 6
Filters and Differential Amplifiers
Part 2: Low-pass Filter Design with Frequency Domain Verification
This section of the PSPICE activity is important. Its purpose is to clearly illustrate the
filtering action,
Unit 6: Filters and Differential Amplifiers (PSPICE 9.2 Tutorial on AC
Sweep)
.11) Learn how to set up a PSPICE AC Sweep simulation.
2)2) Visualize the concept of low-pass filtering, both in the frequency and
time domains.
Objectives:
3) Gain more insight
EEL 3300 Introduction to Electronics
Unit 6
Filters and Differential Amplifiers
Part 4: Differential Amplifiers
This section is important, as it gives a more complete picture of what differential
amplification is. Recall that in the theory part (Unit 5),
EEE 3300 Introduction to Electronics
Unit 6
Filters and Differential Amplifiers
Part 5: (Optional Extra-Credit) Homework E1
[Some of you, at this point, may still be struggling with Homework 1, due only at the end
of next week. Keep working! Some may be r
EEL 3300 Introduction to Electronics
Unit 4
Integrators and Simple Filters
Part 5: Advanced Filter Examples
This part is totally optional. You don't have to read it and you will not
be tested on its contents. Skip this part if your time is limited. Glance
EEL 3300 Introduction to Electronics
Unit 4
Integrators and Simple Filters
Part 3: Theory of Op-amp Low-Pass Filters
Simple Low Pass Filters
The most primitive low pass filter is a simple RC network:
By voltage division of impedances (if RL=):
Vout ( s)
V
EEL 3300 Introduction to Electronics
Unit 4
Integrators and Simple Filters
Part 4: Low-Pass Filters Examples
Example 1:
In this example we shall illustrate the mechanics of obtaining a mathematical
expression of a frequency response.
The transfer function
EEL 3300 Introduction to Electronics
Unit 4
Integrators and Simple Filters
Part 2: Integrator Examples
Example 1
The integrator gain is:
1
1
10 [sec-1]
3
RC 100 6
10 1 10
The integral of a DC input is a voltage that increases linearly with time:
t
v o (t
EEL 3300 Introduction to Electronics
Unit 4
Integrators and Simple Filters
Part 1: Brief Review of Laplace Transform and Integrators Theory
Review of Impedances
A capacitor is any device whose voltage vs. current relationship is ic C
dvc
. Both ic
dt
and
Unit 4: Integrators and Simple Filters
1) Review the concept of an Impedance and extension of the inverting
amplifier gain formula for the case of input and feedback RC networks.
Objectives:
2) Learn about the basic operation of an op-amp integrator.
3) L
EEL 3300 Introduction to Electronics
Unit 3
Orcad Lite PSPICE Version 9.2 Tutorial
Part 2: Adding New Schematics
Example 2:
New circuit built upon the previous circuit
Let us now add more DC sources and resistors to the scheme as shown in Figure 2 below:
EEL 3300 Introduction to Electronics
Unit 3
Orcad Lite PSPICE Version 9.2 Tutorial
Part 3: Transient Mode
Example 3: A simple RC circuit
The circuit to be simulated is the following:
Figure 3. An RC Circuit
This is no longer a DC analysis, and logically i
EEL 3300 Introduction to Electronics
Unit 3
Orcad Lite PSPICE Version 9.2 Tutorial
Part 1: Step-by-step Project Set-up and Schematics Construction
You will learn first how to start a PSPICE project, how to create a schematic page and
how to run Bias Point
EEL 3300 Introduction to Electronics
Unit 3
Orcad Lite PSPICE Version 9.2 Tutorial
Part 4: Simple Op-amp Circuits
Example 1: Simple Inverting Voltage Amplifier
The circuit that is to be simulated is:
Figure 4. An inverting op-amp with a voltage gain of -1