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246 Electronic Systems III with Lab (ECT 246).
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ECT 246 Week 1 Discussion | Assignment Help | Devry University
Week 1:
Applications of Power Supplies
What is a
power supply, what is its purpose, and where would you find one? What
determines the voltage and current of the power supply?
ECT 246 Week 1 Homework Assignment Help | Devry University
For the
problems below, you need to turn in your answers only:
Chapter
17: Practice Problems 6, 10, 12, 13, 14, 16, 26, and 40
Chapter
18: Practice Problems 2, 14, and 22
For the
problem below, you need to turn in all of your work, showing all your steps in
detail:
Chapter
18: Practice Problem 26
Complete
the problems in MS Word. Paste in any pictures or figures, and submit the MS
Word document.
ECT 246 Week 1 Lab Assignment
1 | Devry University
Lab 1
–Power Supplies
Power
Supplies
David
Frame ECT246-May2019
This week
you will build a regulated power supply.
Each subsystem - transformer, bridge rectifier, filter and voltage
regulator is examined and the voltages and waveforms are analyzed.
A. Draw
and discuss the subsystems of an ac to dc regulated power supply.
a.
Draw and label each of the subsystems of a regulated power supply
b.
Describe briefly the purpose of each subsystem.
B. Use a
bridge rectifier’s data sheet to determine its operating parameters.
a. Using the data sheet for a W04M or
similar device, determine and record the pin configuration and maximum
operating characteristics.
Package
Drawing and Pin Configuration:
Maximum
Ratings and Electrical Characteristics:
Peak
Repetitive Reverse Voltage (image ): __________
RMS
Reverse Voltage (image): __________
Average
Rectified Output Current (image ): ______
Forward
Voltage (image ): _________
ECT 246 Week 2 Homework Help | Devry University
For the problems
below, you need to turn in your answers only:
• Chapter
19: Practice Problems 18, 20, 38, and 40
• Chapter
20: Practice Problems 2, 6, and 8
• Chapter
21: Practice Problems 24 and 26
For the
problem below, you need to turn in all of your work, showing all your steps in
detail:
• Chapter
20: Practice Problem 30
Complete
the problems in MS Word. Paste in any pictures or figures, and submit the MS
Word document.
ECT 246 Week 2 Discussion 1 | Assignment Help | Devry University
Week 2:
Transistor Applications
Explain
two applications in which transistors are used and why are they used in those
particular
applications.
What are the alternatives to using transistors?
ECT 246 Week 2 Assignment Help 2 | Devry University
Week 2:
Short Research Paper: Power Supplies
Linear DC
Power Supplies vs Switching DC Power Supplies.
Detail:
Do research on two main designs for the DC power supplies: Linear DC Power
Supplies and Switching DC Power Supplies. Write a short report using
appropriate references and diagrams. Suggested contents for the report should
include, but not limited to the followings:
1.
Technology.
2.
Functionality.
3.
Applications.
4.
Example Circuits.
5. Cost.
ECT 246 Week 2 Lab Assignment Help | Devry University
Lab 2
–Transistors
Part
A-Transistor Circuits
David
Frame ECT246May2019
During
week two you will be introduced to Bipolar Junction Transistors (BJTs) and
Junction Field Effect Transistors (JFETs).
You will learn the device’s schematic symbols, their electrical
characteristics, how to create a dc bias circuit and a small signal amplifier.
A. Analyze the data sheets of a BJT and
determine items such as the schematic symbol, pin designation, maximum ratings,
on and off electrical characteristics.
a. Draw the schematic symbols of a NPN and
PNP transistor and label the base, emitter and collector.
b.
Draw the physical packages of a 2N3904 transistor and label the base,
emitter and collector leads.
c.
Record the maximum ratings such as collector-emitter voltage,
collector-base voltage and emitter-base voltage, collector current.
ECT 246 Week 2 Quiz | Assignment Help | Devry University
Question
1
(TCO 1)
As the capacitor value increases, the DC voltage does what?
Question
2
(TCO 1)
As the AC input voltage increases at the transformer primary, the secondary
voltage will ______.
Question
3
(TCO 1)
If a diode on the diode bridge opens, what is the result?
Question
4
(TCO 2)
If the coupling capacitor shorts out, ______.
Question
5
(TCO 2)
Choose the best answer for a bipolar junction transistor.
Question
6
(TCO 2)
The input waveform given below is a ______.
ECT 246 Week 3 Discussion | Assignment Help | Devry University
Week 3:
Inverting Op-Amp Applications
List an
application of an inverting op-amp circuit, the advantages of the inverting
op-amp configuration, and why you would use an inverting op-amp as opposed to
other configurations.
ECT 246 Week 3 Lab Assignment Help | Devry University
Lab 3
–Op-Amps
FRAME
Part A-Op
Amps
In week
3, integrated circuits, ICs, are studied in the form of operation amplifiers,
op-amps. The op-amp is a very common IC
that can be used as high gain amplifiers, comparators, and oscillators. You will learn about their packaging, their
characteristic and the various amplifying configurations in which they are
used.
A. Define the basic concepts of an op-amp
including its symbol, input modes such as differential inputs, common mode
rejection ratio, input and output impedance, slew rate and negative feedback.
a. Give a general description of an op-amp
such as a LM741A.
ECT 246 Week 3 Homework Help | Devry University
For the
problems below, you need to turn in your answers only:
Chapter
22: Practice Problems 2, 4, 6, 12, 14, 18, 22, and 24
For the
problem below, you need to turn in all of your work, showing all your steps in
detail:
Chapter
22: Practice Problem 20
Complete
the problems in MS Word. Paste in any pictures or figures, and submit the MS
Word document.
ECT 246 Week 4 Assignment Help | Devry University
Week 4:
Short Research Paper: Amplifier Classes
Analysis
of Amplifier Classes
Detail:
Research and investigate Amplifier circuits and submit a short report. Report on all classes of amplifiers. This should include A,B, and C, as well as
newer classifications. Compare and contrast
all that you can find.
ECT 246 Week 4 Homework Help | Devry University
Draw
Stereo Schematic
Draw a
complete schematic of a mono or stereo power amplifier in Multisim. It must
have an output power of at least ten watts. Include the power supply
calculations and parameters.
Complete
the documentation in Microsoft Word. Include the schematic pasted from
Multisim, and all calculations and power supply requirements. Submit both the
Word and MultiSim files for grading.
ECT 246 Week 4 Discussion | Assignment Help | Devry University
Week 4:
High Power Audio Amps
What
factors limit the maximum output power for an audio amplifier, and why? Look on
the Internet and see how many watts of output power are available for an audio
amplifier integrated circuit. What are some methods these amplifiers use to
protect themselves?
ECT 246 Week 4 Lab Assignment Help | Devry University
Lab 4
–Audio Amplifiers
Part A:
Audio Amps
Investigation
of the LM386 Audio Amplifier takes place during week 4. The LM386 is a versatile special purpose
op-amp used to amplifier audio frequencies.
The device is contained in a single 8-pin dip package and has a gain of
up to 200 and a power output of 1-watt.
A. Use an Internet search utility, such as
Google, find an audio amplifier such as a LM386 download the specification
sheet and determine its general characteristics such as its general
description, the package type and pin configuration.
a. Usethe Internet to search for a LM386
data sheet. Try www.national.com or
www.datasheetarchive.com. Print the
datasheet.
b. From the data sheet find the following
information and record.
What are
its general characteristics?
Features
Applications
Package
type
Pin
configuration
B. Use the specification sheet to determine
its electrical characteristics and operating values.
a. Record the electrical values of the
LM386.
Absolute
Maximum Ratings:
Supply Voltage
Package Dissipation
Input Voltage
Electrical
Characteristics:
Operating
supply voltage
Output
power
Voltage
gain
Bandwidth
Input
Resistance
C. Using information from the data sheet or
other sources and Multisim, draw the schematic and verify the component values
of an audio amplifier application using the device.
a. Using the Typical Applications section
or other source find an amplifier design with a gain equal to 20.
b. Use Multisim to create the circuit
schematic, with simulation model. Follow industry schematic recommendations
provided by your professor. Paste the schematic into your lab report.
c. Explain briefly how the gain of the
LM386 can be changed.
ECT 246 Week 5 Discussion 1 | Assignment Help | Devry University
Question
1
(TCO 2)
As Ib increases, Ic __________ and Vce __________.
Question
2
(TCO 2)
Which is true for the JFET?
Question
3
(TCO 1)
Find the following for an input of 120 VAC(RMS), 60 hertz, given a 15:1
stepdown transformer and a full-wave bridge rectifier. Rload is 82 ohms. Round
off to the nearest tenth place.
1a:
Primary or input peak voltage =
1b:
Secondary peak voltage =
1c: Peak
voltage out of the rectifier =
1d: DC
voltage out of the rectifier =
1e: DC
current into the load =
Question
4
(TCO 2)
For the circuit below, if Vcc is 30 volts and Rb is 4.3k ohms, find the base
and collector voltages and currents for an input of 0V and 5V. Beta = 200 and
the motor resistance is 500 ohms.
ECT 246 Week 5 Discussion | Assignment Help | Devry
University
Week 5:
Op-Amp Comparator
List an
application of an op-amp comparator configuration, the advantages and
disadvantages of the op-amp comparator configuration, and why you would use an
op-amp comparator rather than another device.
ECT 246 Week 5 Homework Help | Devry University
For the
problems below, you need to turn in your answers only:
Chapter
22: Practice Problems 32 through 42 and 46, even problems only.
For the
problem below, you need to turn in all of your work, showing all of your steps
in detail:
Chapter
22: Practice Problem 44
Complete
the problems in MS Word. Paste in any pictures or figures, and submit the MS
Word document.
ECT 246 Week 5 Lab Assignment Help | Devry University
Lab 5
–Op-Amps
FRAME
Part
A-Comparators and Summing Amps
In week
five, you will create several circuits using the operation amplifiers you
studied earlier. An op-amp can be
configured to perform special applications found in everyday electronic
equipment. These include comparators,
level detectors, summing amplifiers and digital to analog converters.
A.
Describe the operation of a level detector.
a.
Explain the operation of the following circuit.
What is the purpose of ? What is the purpose of ? What
determines if the LED is on or off?
ECT 246 Week 6 Discussion | Assignment Help | Devry University
Week 6:
Active Filters
Please
list the different types of active filters. Discuss the advantages and
disadvantages of active filters. Find an interesting application for an active
filter and show it here.
ECT 246 Week 6 Assignment Help | Devry University
Week 6:
Short Research Paper: Active Filters
Research,
analyze and simulate the circuits of Active Filters using Operational
Amplifiers
Detail:
Research and investigate circuits of Active Filters including Low Pass, High
Pass and Band Pass filters. The report should include, but not limited to the
followings:
Active vs Passive filters, what is the
difference in technology and applications? Pros and cons?
Active Low Pass Circuit spec and circuit
design, analysis and computer simulation.
Active High Pass Circuit spec and circuit
design, analysis and computer simulation.
Active Band Pass Circuit spec and circuit
design, analysis and computer simulation.
How are cutoff frequency and Q determined in
each active filter design?
ECT 246 Week 6 Homework Help | Devry University
For the
problems below, you need to turn in your answers only:
• Chapter
23: Active Filters and Oscillators, Practice Problems 2, 4, 6, 8, 10, 12, and 22
For the
problem below, you need to turn in all of your work, showing all your steps in
detail:
• Chapter
23: Practice Problem 24
Complete
the problems in MS Word. Paste in any pictures or figures, and submit the MS
Word document. See the Syllabus for details.
ECT 246 Week 6 Lab Assignment Help | Devry University
Lab 6
–Filters and Oscillators
Part
A-Active Filters
Week six
addresses the concept of active filters and oscillators. The low, high, bandpass and notch active
filters, their circuits, and operating parameters are covered. The Wein-bridge RC oscillator, its
configuration, operation and circuit is discussed.
A. Identify the gain-versus-frequency
response of basic filters.
a. Draw the frequency response of a
low-pass, high-pass, bandpass, and a notch filter. Label each axis, the critical frequency,
bandwidth and the 3-dB point.
ECT 246 Week 6 Quiz | Assignment Help | Devry
University
(TCO 5) If Va = - 2V, what is Vout?
Question 2
(TCO 3) If Vin = 1.5V, and Rload = 3k ohm, what is
the current through Rload?
Question 3
(TCO 7) Positive feedback causes ______.
Question 4
(TCO 6) The filter below left is a ________ pass
filter, and it is made with one RC circuit the maximum rolloff will be ________
db/decade.
Question 5
(TCO 2) For the circuit below, if Vcc is 60 volts
and Rb is 4.3k ohms, find the base and collector voltages and currents for an
input of 0V and 5V. Beta = 300, the motor resistance is 300 ohms.
Question 6
(TCO 1) Find the following for an input of 120
VAC(RMS), 60 hertz, given a 6:1 stepdown transformer, and a full-wave bridge
rectifier. Rload is 70 ohms. Round off to the nearest tenths place.
4a: Primary or input peak voltage =
4b: Secondary peak voltage =
4c: Peak voltage out of the rectifier =
4d: DC voltage out of the rectifier =
4e: DC current into the load =
4a: Primary or input peak voltage =
4b: Secondary peak voltage =
4c: Peak voltage out of the rectifier =
4d: DC voltage out of the rectifier =
4e: DC current into the load =
Question 7
(TCO 5) If the resistance of the thermistor is 12k
ohm, what is Vout? Is the motor on or off?
Question 8
(TCO 6) For the circuit below, L1 is 1mH, makingis
a ________ pass filter. The resonant frequency is _________.
Question 9
(TCO 6) For the filter below, if C = 0.1ufd, this
is a _______ pass filter with a roll-off of ________ db/decade and a cutoff
frequency of ________.
ECT 246 Complete Course iLabs | Devry University
ECT 246
Complete Course iLabs
ECT 246
Week 1 iLab – New 2015
ECT 246
Week 2 iLab – New 2015
ECT 246
Week 3 iLab – New 2015
ECT 246
Week 4 iLab – New 2015
ECT 246
Week 5 iLab – New 2015
ECT 246
Week 6 iLab – New 2015
ECT 246
Week 7 iLab – New 2015
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