ECE252-01
Due 10th of July
Homework-07
1. Sketch and label a half-wave rectifier circuit. Use an ideal diode and a 3 V rms source.
Explain how the circuit works. Show the voltage wave forms in a diagram. (4pts)
2. Repeat Problem 1 if a silicon diode is us
ECE252-01
Homework-05
Due 24th of June
1. Determine the current drawn from a three-phase 440V line by a three-phase 15-hp motor
operating at full-load, 90% efficiency, and 0.80 power factor lagging. Find the values of P
and Q drawn from the line.
(15pts)
ECE 252-01
Introduction to Electrical
Engineering Summer-2016
Lesson 1. Basic Elements and
Circuit Laws
The Physics of Electricity
There are six basic metric units.
-m, kg, s, A, K, Cd
All other units are derived from these.
Charge of an electron?
Vol
Lesson 13B. Three-Phase
Power
Sketch showing 3 overhead
lines:
Most electric power is transmitted over
high voltage three-phase lines. This
method of power transmission is more
efficient than single phase power, as you
might use in your home.
Why use thre
ECE 252-01
Introduction to Electrical
Engineering for Summer-2013
Lesson 1. Basic Elements and
Circuit Laws
The Physics of Electricity
There are six basic metric units.
-m, kg, s, A, K, Cd
All other units are derived from these.
Charge of an electron?
Vol
Lesson 16. Computer
Circuits
Base Conversion by Example
Binary to Decimal
Decimal to Binary
The MOSFET
A basic building block of most computers
is the metal-oxide semiconductor fieldeffect transistor (MOSFET). A simplified
diagram of a MOSFET is shown bel
Lesson 12. Power in AC
Circuits
Preview-The Power Triangle
P=power-real power in watts. It is also
called average power. This is the power
that can get work done. Resistors/Loads
Q=reactive power in VARs (volt-amps
reactive). This is really an energy stor
Lesson 17. Solid State
Devices
Diodes
Diodes easily carry current in the forward
direction, the direction of the arrow, but
block current in the reverse direction.
Frequently it is useful to consider the diode
as an ideal device.
Ideal diodes have the fol
Lesson 11. AC Circuits
Example AC Circuit:
The Phasor
Restrictions:
Sinusoids only
Wait a long time (usually milliseconds)
Linear elements only (ex: no diodes)
Only one frequency
How to do transform:
Impedance
Complex version of resistance is called imped
Lesson 12. Power in AC
Circuits
Preview-The Power Triangle
P=power-real power in watts. It is also
called average power. This is the power
that can get work done. Resistors/Loads
Q=reactive power in VARs (volt-amps
reactive). This is really an energy stor
Lesson 6. Thevenin's Theorem,
Maximum Power Transfer, and
Superposition
Source Transformation
Thevenin and Norton Equivalents
This refers to circuit where you are interested in the voltage and
current at a pair of terminals ( a 2-terminal network). This
h
Lesson 2. Resistors in Series and
Parallel
Resistors in Series
Resistor in Parallel
Resistor Circuit Examples
General method for finding resistance
between two points.
Find the resistance between A and B.
Steps
Identify, circle and label nodes.
Identify a
Lesson 7. Inductors and
Capacitors and Their Uses
Introduction
Note that the sign convention is the same for all devices-current
goes in the positive end.
Inductors
A coil of wire, with or without a core made of iron or ferrite.
Deliberate inductance (or
Lesson 3. Circuit Solving with
Kirchhoff's Laws
Completely Solving Circuit
Example 01
Completely Solving Circuit
Example 02
More
Planar and nonplanar circuits
EQE 252 Introduction to Electrical Engineering Quiz 13BP
100 Points Show your work. Practice
SOIL/Wave
A three-phase, delta-connected generator is connected through power lines to a balanced Y-connected
load. The net load consumes 3 kW at a power factor o
v
b
ECE 252 Introduction to Electrical Engineering Quiz lSP .
100 Pdints Show your work. PM :3 1 6:. .90).; in: 1.1
1 (50) A sensor has a Thevenin equivalent circuit which is a voltage source VTUZ) in series with a 10 Id)
resistor. It is to be connected
ECE252 Lesson 2
Page 1 of 5
ECE 252 Introduction to Electrical Engineering
Lesson 2. Resistors in Series and Parallel
Last edited: 04/26/2013 10:26:56
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omega:
Lesson 10. Sinusoids, RMS, and
Complex Numbers
Sinusoids
Why do we study sinusoids?
Sinusoids are common.
Simple.
You can treat non-sinusoidal sources as sums of sinusoids.
When analyzing a circuit, its much easier to do sinusoidal
steady-state analysis t
Lesson 18. Batteries, Voltage
Regulators, Transformers, and
Sensors
Voltage Regulator
What if you had a 12V power supply or
battery and you need 5V for your digital
chip?
Wrong way:
V0 will be 5V only when you have no load
connected. As soon as you connec
Battery Basics
A guide to battery use in engineering projects
Thomas G. Cleaver
University of Louisville
Department of Electrical and Computer Engineering
Jan. 28, 2013
References
This presentation was developed using the following sources:
T.E. Bell, Cho
Lesson 15. Frequency Response,
Filters, and Resonance
Signal Conditioning
As an example, suppose we have a sensor that
outputs data that we want to put into a computer.
We may have to do any of following things to prepare
the signal for storing in the com
Electrical Safety
Thomas G. Cleaver
University of Louisville
Department of Electrical and Computer Engineering
July 11, 2011
2011 Thomas G. Cleaver. All rights reserved.
Are these birds safe?
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ECE252-01
Homework-06
Due on 1st of July
1. Design and sketch a high-pass filter with a cutoff frequency of 1000 Hz. Use a 10 F
capacitor and an appropriate resistor. What is the gain of the filter at the cutoff
frequency? Give your answer both as a ratio
ECE252-01
Homework#02
Due 27th of May
1. Find the branch current and for the circuit shown in the following figure and
check your answers by showing that the total power generated equals the total
power dissipated. (25pts)
2. Find in following circuit.
(1