#
(In Alexander & Sadiku unless otherwise noted.)
Read 13.7
Do 13.72, 13.73
Hint: Do 13.73 first
Note errata on Problem 13.73 and its answer.
Optional: What is inside a wind turbine?
(This is the last assignment for this course.)
This assignment will be handed back on Monday, 5/1, or
earlier via the bin near Prof. De Boer's office door. You
will get an e-mail when it is ready for pick-up.
Read 13.6
Do 13.67, 13.70
Note errata on the answer to 13.67.
Optional: Autotransformer rebuild
Optional: Oil-filled transformer explodes
Optional (sad) S.F. CA substation fire, The S.F.
CA substation fire happend Friday, 4/21/2017.
(Late Friday evening, 4/21, the due date on this
assignment was changed from 4/24 to 4/26.)
Read 13.5
Do 13.36, 13.52
Optional: Read 13.1, 13.2, 13.3, 13.4
Optional: Replacing a light bulb (KDLT tower)
Optional: Install antenna, Willis (Sears) tower
Read 12.7, 12.10, 12.11
Note errata in Sec 12.10 (Errata posted 4/21/2017.)
Note errata on Page 535 (Errata posted 4/21/2017.)
Do 12.67
Hint: "Mind your P's and Q's."
Note errata on Prob 12.67 (Errata posted 4/21/2017.)
Optional: Coal-Fired Generating Station
Optional: Do not try this! The mention of
30 volts in the video is a guideline that is
written in some electric codes. Working at
less than 30 volts is not a garantee of safety!
Optional:"Transistors: How do they work?"
Read 12.4, 12.5, 12.6
Do 12.11, 12.18, 12.21
Note errata on Prob. 12.11 (Errata posted 4/21/2017.)
Optional Reading: more on "Split-Phase" and on
"High-Leg Delta" (Used to provide 120 V
split-phase and 240 V three-phase with one
electrical service entrance to the premises.
Optional: Loudspeaker manufacturing
Another Loudspeaker video
Virtual Neutral, Y-Δ V and I relations
Review class notes on terminology
Read 2.7 on p51-57, 12.3
Do 12.5, 12.8
Optional: "How to wire a split-phase elec. panel"
Optional: "How to add a Circuit Breaker"
Note: Never! open! a! live! panel!
This guy should have turned the power
off first, and he should be wearing safety
glasses and other personal protective
gear at least until he can make measurements
to prove that the busses are de-energized.
(See "arc blast" tutorials for what can go
wrong.)
Balanced loads, Y conn., per-phase analysis
Review class notes on split-phase power
Read 12.1, 12.2, bottom half of page 508 and
Example 12.2 on page 509.
Note errata in Figure 12.5 (Errata posted 4/21/2017.)
Do 11.85, 12.7
Note errata on Prob. 12.7 (Errata posted 4/21/2017.)
Hint: If the source and the load are balanced,
then In = 0 always. (Textbook p508, Eq. 12.17a)
This means that if a neutral connection is
missing, you can add it to the schematic with-
changing any voltages or currents. Solve the
problem with the added neutral connection. The
result is the same for the circuit without the
neutral connection!
Optional: If you need three-phase power at your
home or farm but only have single-phase power
available, there really is no solution as good
as having three-phase power brought in. But if
you insist on running a three-phase machine on
single-phase power, here is one option: Use
a small single-phase motor to spin up a large
three-phase motor. Next, energize one phase of
the three-phase motor with your single-phase
power. Then switch off the single-phase
starter motor but leave the large three-phase
motor connected to the single-phase source.
Finally, connect a small three-phase machine
in parallel with the large motor, which now
will act as a motor-generator combination.
(There are other ways to do this, but usually
more expensive and/or less powerful.)
Introduction to 3 phase pwr--smooth pwr
Read 11.9, 11.10
Do 11.80, 11.84
Note: There is errata on Problem 11.84
Optional: Virtual power plant tours
A coal fired generator plant
A wind farm
a hydroelectric power plant
Leading and lagging power factor.
Conservation of avg pwr, reactive pwr
Power factor correction
Review 11.6, Read 11.7, 11.8
Do 11.63, 11.69
Optional:
Municipals: The Power of Community
Investor Owned: Powerful Profits
Cooperatives: Buckeye Power
Note: there are also federally owned and
privately owned utilities.
Read 11.5, 11.6
Do 11.47
Optional: U of Tenn grid angle map
U of Tenn Tornados disturb the grid
Prof. Overbye: Genesis of the 2003 blackout
Note: There is only one problem on this assignment in
recognition that this a a generally busy week in
some other engineering, math, and science courses.
Review 11.4, see classroom slides
Do 11.27, also do parts (b,c) shown below,
also do 11.32, 11.36
Problem 11.27 continued.
(b) What reading will a perfectly accurate
"True RMS" DMM show?
(c) What reading will a perfectly accuarate
"RMS calibrated, average rectified
value responding" DMM show?
Opt'l: Yet another video on "power savers" here.
Note: On 3/31 at 4:52 PM Problems 11.41 and 11.47
removed from this assignment and will be moved to
the next assignment. Probs. 11.27, 11.36 were added.
Review 11.1, 11.2
Read 11.4, class notes
Do 11.3, 11.25, 11.26
Optional video on encabulator technology.
Optional reading on encabulator technology.
AC power overview, avg and reactive pwr
Review Chapter 10 as needed
Read 11.1, 11.2
Do 10.54, 11.1, 11.2
Optional: What do you think of this video "You see it's aah... drawin' about two amps of power... now I'm gona plug this in... and it's gone down to about one and a half amps of power..." (Quotation from the video.)?
If you liked that one, you might also like this one! "...converts one power source and puts it into four, each costing 25% of the electricty..." (Quotation from the video.)
We can discuss these claims in class if you like.
Read 9.8, 10.1, 10.2, 10.3, 10.4
Do 9.90, 10.7, 10.27
Note: This set is expected to be due on Friday.
Optional Videos: Capacitors and Inductors
Super Inductor Simple Joule Thief
Optional: More sensible explanation from
Wikipedia, Joule Thief
Read 9.4, 9.5, 9.6, 9.7
Do 9.23, 9.25, 9.29, 9.35
Optional: Resonance Experiment
Wine glass resonance in slow motion
Read 9.3
Do 9.9, 9.11, 9.12, 9.19
Optional: The Joys of RPN
HP 35s vs. TI 36X Pro Comparison
Read 9.1, 9.2, App. B on pages A-9 through A-15
Do 9.1, 9.2, 9.3, 9.13
Note trigonometric identities in Appendix C.
Note errata on the answer to Problem 9.1
Optional videos:
A.) A non-conventional intro. to complex #s
B.) A conventional lecture on phasors ~38 mins.
Note two typos in the above lecture on phasors.
1.) at 5:45 "cos(ωt +
/2)"should be "cos(ωt + /4)"2.) at 21:58 in two instances, the word "conductive" in
blue text should be replaced by "capacitive" in blue text.
Review 8.8, 8.11
Do 8.67
Hint for 8.67: Use the operator method
Optional:
Video on Frequency-Hopped Spread Spectrum
Read about Lamarr, inventor of FHSS
Book Review: "Hedy's Folly"
Optional videos on internal combustion engines:
Transparent, or Tutorial, or Teardown
(This problem set was originally inadvertently numbered
PS#20. On 3/14 at 10:18 AM this was corrected to PS#21)
Review 8.1 – 8.6, Read 8.7, 8.8, 8.12
Do 8.5, 8.61
Hint for 8.61: Use the operator method
Optional: Another Prof's notes, operator method
Optional: Read 8.10, 8.11
Optional:
DVD at the DC Library: "Flash of Genius"
You Tube trailer; Rotten Tomatoes review
✽"Too much technical information about circuit boards,
Motorola transistors. . ." —Rex Reed
(Hmm. . . Sounds fresh to DDB, not rotten!)
☻"Ethics is at the heart of this David and Goliath
story. . . " —Louise Keller
(DDB's found it a worthwhile entertainment too!)
☻"The most gripping movie about engineering
windshield wipers you will ever see. Take that any
way you care to. —Bob Strauss
(This problem set was originally inadvertently numbered
PS#19. On 3/14 at 10:16 AM this was corrected to PS#20)
Review 8.2, Read 8.5, 8.6
Do 8.3, 8.37, 8.45 except change the value of R
from 2 Ω to 1 Ω
Optional: Over and under coiling of a cable
Optional: Another over-under video
Read 8.1, 8.2, 8.3, 8.4
Do 7.85, 8.1, 8.7
Optional: Spectrogram of Dial-up modem
Optional: Another graphic analysis of dial-up
Optional: The above, annotated, in slow motion
Step response of RC, RL circuits
Sequential switching of RC, RL circuits
Review 7.4, Read 7.5, 7.6, 7.9, 7.10
Do 7.28, 7.31, 7.39, 7.51
Optional: Neon Oscillator
Optional: Neon Flicker Panel
Optional: Another Neon Flicker Panel
First-Order Circuits, RC Circuits
Read 7.3, 7.4
Do 7.11, 7.13, 7.15, 7.27
Optional: Fun with a high-voltage capacitor
Optional: Electric Guitar Modification
First-Order Circuits, RC Circuits
Read 6.6, 6.7, 7.1, 7.2
Do 6.67, 7.1, 7.2, 7.4
Optional: Primer on Analog Music Synthesizers
Optional: Patching an Analog Synth
Optional: Fugue in G minor
series and || combinations of inductors
Read 6.4, 6.5
Do 6.40, 6.46, 6.53, 6.64
Optional: Railgun demonstration
Optional: How a railgun works.
Optional: Dordt's IEEE society railgun
Read 5.10, 6.1, 6.2, 6.3
Do (page 210) 5.88, (page 240) 6.5, 6.13,
Repeat 6.13 except change the 60 V source to
40 V and change the 20 Ω resistor to 50 Ω,
also do 6.21
Hint for 5.88: Consider vi to be supplied by an
independent voltage source (draw it.) There
are two voltage dividers in the "diamond." Also
recognize the instrumentation amplifier and apply
the equation for vo that appears about an inch
below Eq. 5.8.3 on page 188 of your textbook.
(Hint was updated on 2/14 at 9:43 am.)
Note: Please review homework standards for
matters on the size and quality of graphs that
are answers.
Optional video: What is inside a capacitor?
Op-amps: Sum, difference, Instrumentation
Read 5.6, 5.7
Do 5.27, 5.39, 5.50 part (a) only, 5.66
Note errata on the answer to 5.39.
Hint for 5.66: Nodal analysis looks messy since
there are so many nodes, but actually it turns
out to be easy due to the voltage sources and
the grounded non-inverting inputs to the op-
amps. There are only two nodes at which full
KCL equations are needed. Also, perhaps review
the slide on nodal analysis from the lecture on
2/03 (see the last slide from that day).
Optional: View this animated tutorial From ASU
on the topic of the ideal op-amp.
The tutorial uses the word impedance. This is a
generalization of resistance. We will study impedance
later in this course. For now, just consider it to mean
the same thing as resistance. (Z = R)
Optional: The hydraulic analogy of a capacitor
(The GIF that would not play in class.)
Optional: LCD Teardown (~5 min.)
Optional: LCD Teardown (~34 min.)
Read 5.2 (including Example 5.1), 5.3 – 5.5
Do 5.5, 5.9, 5.19
Optional: Diesel engine governors explained
Optional: Find out about power steering.
Read 4.8, 4.10, 5.1, 14.3 (page 615-7)
Do 4.67, 4.68, 5.1
Optional: Fractal Zoom... Mandelbrot (10:01)
Review Examples 4.8 through 4.11 (pgs 140-145)
Read 4.6. Optional: Read 4.7
Do 4.39, 4.47, 4.64
Optional: Biography on Léon Charles Thévenin.
Optional: Thevenin's theorem in pop culture.
Optional: If you are looking for an internship
consider this advice on career fairs.
Dress code information
How to dress for a job interview (men)
How to dress for a job interview (women)
It does not cost a fortune to look like $1M.
Read 4.4, 4.5
Do 4.20, 4.23, 4.33
Optional:
Remembering Ray Dolby, 1/8/1933–9/12/2013
"Above all else, guard your heart, for everything you do
flows from it." — Proverbs 4:23 (NIV)
"I think a lot of developments start with the desire of
the developer to get what he really wants so that he can
use it. It's not just the technical fascination or the
business opportunity." —Ray Dolby
Ray Dolby, pioneering sound engineer, dies at 80
—San Francisco Chronicle
Retrospective Web site (includes a video)
—hosted by Dolby Labs
Read 4.1, 4.2, 4.3
Do 4.3, 4.6, 4.9
Note on Problem 4.3: For full credit on you
must use linearity for parts (b) and (c).
Note on Problem 4.6: For full credit you must
explain (use a sentence or two) how you got
your answers.
Note errata on the answer to Problem 4.9
Optional video: How NOT to blow up your scope!
Mesh, Supermesh
Read 3.4, 3.5.
Do 3.34, 3.41, 3.44
Note errata on Problem 3.34.
Note: we will skip Section 3.6 in the textbook.
It is optional reading however. Some students
find the method in Sec. 3.6 to be tricky (bad).
Others love it. "Your mileage may vary."
Optional: Why become an engineer? Watch this
short film titled Design Our Future.
Prof. De Boer does not endorse every statement made
in this video, but it does provoke thought.
(The link at the end of the video is defunct. A similar
link ending in ".info" instead of ".us" is a phishing
site—don't go there!)
Review 3.1, 3.2, Read 3.3
Do 3.4, 3.17, 3.18
Optional video ~3 minutes: "Every question
harbors a latent question." (What if?)
Read 3.1, 3.2 in your textbook
Optionally review Sections 7, 8, 13 in IEE.
Do (p 112 ff) 3.2, 3.7, 3.10
Optional:
Video lecture: The Passive Sign Convention
Video lecture: Passive Sign Cnvntn Examples
Note: The passive sign convention is easy once you
clearly understand it. However, there are lots of bad
descriptions of it floating around on the Internet.
Stick with the IEE handout, the videos above, or ask in
class rather than searching the Internet yourself on
this matter.
Optional: Interview tips from GE
Review Sections 2.5, 2.6
Optionally review Sections 13, 14, 15 in IEE.
Do (p 69 ff) 2.35, 2,47, 2.26
Note: In problem 2.26, assume there is a
current source of ix amps pointed upward and
connected on the left side of the given schematic.
Optional:
Video lecture: The Passive Sign Convention
Video lecture: Passive Sign Cnvntn Examples
Note: The passive sign convention is easy once you
clearly understand it. However, there are lots of bad
descriptions of it floating around on the Internet.
Stick with the IEE handout, the videos above, or ask in
class rather than searching the Internet yourself on
this matter.
Optional: AM Radio tutorial.
See
note
1
below
Read: 2.8, 2.9 in your textbook
Read Switch in Wikipedia
Review: Sections 9, 10, 11 in the IEE handout.4
Do these problems starting on page 74: 2.67,
2.69, 2.74
Optional Video: Wat?
See
note
2
below
See
notes
3 & 4
below
voltage, resistance, power, KVL, KCL
Scan Chapter 1 and Chapter 2 through
Section 2.6 in your textbook
Review sections 1 though 8 in the handout,
"An Introduction to Electrical Engineering."4
Do these end-of-chapter problems in your
textbook starting on page 24: 1.2, 1.11, 1.18,
and starting on page 66, Problems: 2.10, 2.31
Note errata in your textbook on
Practice Problem 2.11