EE 3 W13 Homework 4 Solution.
Prof. G. Pottie
1. The invention and deployment of the telegraph had a large impact on many
spheres of life in the 19th and 20th centuries. Please provide short answers to the
qu
EE3 INTRODUCTION TO ELECTRICAL ENGINEERING
LABORATORY
MANUAL
UCLA EE3
Professor O. M. Stafsudd
Department of Electrical Engineering
October 2013
Rev. September 2015 (version 1.9)
Acknowledgements
I would like to acknowledge and thank the many people who
EE3: Introduction to Electrical
Engineering
Lecture 5: Automatic Control
Greg Pottie
[email protected]
+1.310.825.8150
EE3 Prof. Greg Pottie
1
Outline
Industrial control applications
Feedback principle
Analog controllers
Digital approach
EE
EE3: Introduction to Electrical
Engineering
Lecture 2: Circuits II
Greg Pottie
[email protected]
+1.310.825.8150
EE3 Prof. Greg Pottie
1
Outline
One and TwoPort Equivalent Circuits
Series and Parallel Circuits
Operational Ampliers (Opamps)
The Answers: Part 3.
Transformers
An ideal transformer transfers energy from one side to the other by means of inductive coupling.
While in reality there are a variety of losses, for high quality AC transformers the efficiency is
very high (greater than 9
EE3 Winter Quarter 2014
Name__
LAST
Homework 7
1
FIRST
UID_
The following bit stream has been transmitted:
100001101111111000110111001100100000100111110111
The bit stream contains 36 message bits, along with the error correction bits.
(a) Is there an err
EE3 Winter Quarter 2014
Name__
LAST
Homework 6
1.
FIRST
UID_
Apply DeMorgan's Theorem to the following expression: A +B+CD
A +B+CD = A B CD
2.
Does A B = AB ? Prove your answer.
NO.
A
0
0
1
1
B
0
1
0
1
notA
1
1
0
0
notB
1
0
1
0
notAnotB
1
0
0
0
not(AB)
1
EE3 Winter Quarter 2014
Homework 5
1.
Name_
UID_
In lecture, I stated that NAND and NOR logics are universal logics; that is, they can
be used to create any logical expression. Consider NAND logic. Its symbol and truth
table for two inputs A and B is as f
EE3: Introduction to Electrical
Engineering
Lecture 9: Research Frontiers
Greg Pottie
[email protected]
+1.310.825.8150
EE3 Prof. Greg Pottie
1
Outline
The design process
From mechanisms to electricity to biology
Smart Grid
Bioinfonano
Systems Lecture
Going up to 10,000 feet now.
Looking at the interrelations of subsystems:
how they act when connected.
In particular, we will look at feedback control
systems.
Block Diagram Concepts
Control Signal Voltage
Throttle Angle
Input Voltage
Veh
Match the controller function with the purpose:
_ a. Proportional
1. Determine if system is moving toward or away from the goal
_ b. Derivative
2. Drive the system to zero error
_ c. Integral
3. Determine the system's offset from the goal
The inverted pen
Match the controller function with the purpose:
_ a. Proportional
1. Determine if system is moving toward or away from the goal
3
_ b. Derivative
2. Drive the system to zero error
1
_ c. Integral
3. Determine the system's offset from the goal
2
The invert
Review pp 7186 in the Course Reader.
Much of semiconductor theory is based on the behavior of gases.
T
F
Doping densities are on the order of 1 atom in 1000.
T
F
Acceptor impurities come from Column V of the Periodic Table.
T
F
A forwardbiased PN juncti
1. One lesson from "without Hot Air" is that (check all that apply):
a. It's a fool's errand to try to estimate energy consumption.
b. It is necessary to make the estimate understandable.
c. It is necessary to make the estimate credible.
d. No matter what
Review pp 7186 in the Course Reader.
Much of semiconductor theory is based on the behavior of gases.
T
F
Doping densities are on the order of 1 atom in 1000.
T
F
Acceptor impurities come from Column V of the Periodic Table.
T
F
A forwardbiased PN juncti
1
10V
A
2
1
2
5.45V
Using circuit simplification techniques, find the voltage at A w/respect to ground.
Using Node Voltage Analysis, find the voltage at A w/respect to ground. NOTE: pages 3638
of the Course Reader describe the Node Voltage Analysis metho
T F Voltage is analogous to pressure in a hydraulic system.
T F Voltage is the result of moving charge against an electric field.
T F Current is a through variable.
T F If there is no current, there is no power.
T F A water tower is analogous to a current
T F Voltage is analogous to pressure in a hydraulic system.
T F Voltage is the result of moving charge against an electric field.
T F Current is a through variable.
T F If there is no current, there is no power.
T F A water tower is analogous to a current
The Answers: Part 2.
Delta Functions
A delta function denoted in the time domain by (t) means that the function is zero everywhere
except at t=. It has the special property that the area under a delta function is 1 even though it is
infinitely thin so th
The Answers: Part 1.
This document provides information related to questions asked by at least one member of the EE
3 class. Since typically many students have the same concerns, you may find some of the
material of interest. There will be periodic postin
The Answers: Part 4.
Noise Figure
All electrical systems are perturbed by thermal noise. This occurs wherever there is resistance. It
is impossible to simultaneously achieve high amplification, low noise, large gain, high linearity
and high efficiency. Co
EE3 Spring 2017
Practice Problems 6
1. I have emphasized that, when using the L293D Hbridge chip, pins 2 and 7
must receive opposite logic; i.e., when pin 2 is LOW, pin 7 must be HIGH, and
vice versa. What does the L293D data sheet say when both pins are
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EE3 Spring 2017
Final Exam Practice Problems
24 K
b
12 K
4 K
a
28 V
8 nF
200 mH
+
vC(t)
20 V

1. The switch has been in position a for a long time. All transients
have died out. At t = 0, the switch moves instantaneously to
position b.
a. At t=0 (the las