Transcript Unit 4 Electronics and Control Systems Revision Portfolio New

Electronics and Control Systems
Unit 4 Revision Portfolio
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Contents
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Task 1 – Metals
Task 2 – Polymers
Task 3 – Smart and Modern Materials
Task 4 – Environmental Issues
Task 5 – Electronic Components 1
Task 6 – Electronic Components 2
Task 7 – Power Sources
Task 8 – Integrated Circuits 1
Task 9 – Integrated Circuits 2
Task 10 – Circuit Design
Task 11 – Circuit Manufacture
Task 12 – Calculations
Task 13 – Anthropometrics and Ergonomics
Task 14 – Signage
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Task 1 – Metals
By the end of this task you should be able to:
 Classify a range of commonly used ferrous metals.
 Classify a range of commonly used non-ferrous metals.
On the next two slides you should:
 List three characteristics of the different categories of metal,
 For each category of metal, list three specific varieties with their own
characteristics.
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Task 1.1 – Ferrous Metals
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Task 1.2 – Non-Ferrous Metals
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Task 2 – Polymers
By the end of this task you should be able to:
 Classify a range of commonly used thermoplastics.
 Classify a range of commonly used thermosetting plastics.
On the next two slides you should:
 List three characteristics of the different categories of polymer,
 For each category of polymer, list three specific varieties with their
own characteristics as follows:
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Thermoplastics – Three from the following list: ABS, Polystyrene, PVC, Nylon and
Acrylic,
Thermosetting plastics – GRP, PCB Substrate and Epoxy Adhesive.
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Task 2.1 – Thermoplastics
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Task 2.2 – Thermosetting Plastics
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Task 3 – Smart and Modern Materials
By the end of this task you should be able to:
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Define what a smart material is and describe a range of smart materials.
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Define nanotechnology and describe its benefits and disadvantages.
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Define what is meant by Radio Frequency Identification (RFID) and describe how it is
currently used in the world around us.
On the next three slides you should:
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Create your own definition of what a smart material is by looking at a range of given
definitions, and prepare a brief summary of the working qualities of QTC and Memory
Metals.
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Create your own definition of what nanotechnology means by looking at a range of
given definitions, and describe how nanotechnology is currently being used, including
in nanowires, nanotubes, transistors and capacitors.
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Create your own definition of what RFID is by looking at a range of given definitions
and describe how it is currently being used in the world around us and the issues
connected with its use, including active and passive devices.
Wikipedia Reference: http://en.wikipedia.org/w/index.php?title=Radio-frequency_identification&oldid=310519460
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Task 3.1 - Smart Materials
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Task 3.2 - Nanotechnology
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Task 3.3 – RFID
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Task 4 – Environmental Issues
By the end of this task you should be able to:
 Discuss the impact of designs and designers on the environment.
 Describe a range of non-renewable and renewable sources of
energy and their impact on the environment.
 Discuss the implications of material choice on the lifecycle of a
product.
On the next two slides you should:
 Show that you know what ‘The Six Rs’ are and what they mean.
 Describe one non-renewable and one renewable source of energy
their impact on the environment.
 Show that you understand at least one of the following in terms of
material use, using examples:
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Life Cycle Analysis,
Carbon Footprint.
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Task 4.1 – The 6Rs
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Task 4.2 – Energy Sources
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Task 4.3 – Material Choice
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Task 5 – Electronic Components 1
By the end of this task you should be able to:
 Identify and describe a range of electronic components including:
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Resistors, including Potential Dividers,
Transistors, including Darlington Pairs,
Light Dependent Resistors (LDRs),
Light Emitting Diodes (LEDs),
Thermistors,
Diodes.
On the next three slides you should:
 Present a summary of each type of component including:
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What it looks like in real life,
What its circuit symbol is,
What role it plays within a circuit.
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Task 5.1 – Resistors and Transistors
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Task 5.2 – LDRs and LEDs
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Task 5.3 – Thermistors and Diodes
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Task 6 – Electronic Components 2
By the end of this task you should be able to:
 Identify and describe a range of electronic components including:
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Relays,
Seven Segment Displays,
Motors,
Solenoids,
Buzzers,
Speakers.
On the next three slides you should:
 Present a summary of each type of component including:
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What it looks like in real life,
What its circuit symbol is,
What role it plays within a circuit.
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Task 6.1 – Relays and Seven Segment
Displays
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Task 6.2 – Motors and Solenoids
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Task 6.3 – Buzzers and Speakers
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Task 7 – Power Sources
By the end of this task you should be able to:
 Identify a range of different types of battery.
 Describe what a capacitor is and how it can be used as a power
source.
 Describe how solar power can be used to generate electricity.
On the next three slides you should:
 Show an image of the range of common battery sizes and suggest
what they could be used for.
 Describe what a capacitor is and suggest how it can be used as a
power source.
 Describe how a photovoltaic cell works.
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Task 7.1 – Batteries
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Task 7.2 – Capacitors
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Task 7.3 – Solar Power
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Task 8 – Integrated Circuits 1
By the end of this task you should be able to:
 Describe what an Integrated Circuit is.
 Define what DIL means.
 Define what PIC means.
 Understand what binary means and how it is used in electronics.
 Understand the range of logic gates available and how they work.
On the next three slides you should:
 Describe what IC stands for and how the term DIL is relevant.
 Describe the benefits and disadvantages of using PIC technology.
 Show the range of logic gates that are available and show how the
way they work can be described using binary in truth tables.
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Task 8.1 – ICs and DIL
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Task 8.2 – PIC Technology
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Task 8.3 – Binary and Logic
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Task 9 – Integrated Circuits 2
By the end of this task you should be able to:
 Describe how a 555 IC can be used in a timing circuit.
 Describe how a 741 IC can be used in a sensing circuit.
 Describe how ICs can be used in counting circuits.
On the next two slides you should:
 Show how a 555 IC can be used in an astable timing circuit and a
monostable timing circuit, and describe the difference between the
two.
 Show how a 741 IC can be used as a comparator in a sensing
circuit.
 Show how an IC can be used in a counting circuit.
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Task 9.1 – 555 IC
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Task 9.2 – 741 IC
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Task 9.3 – Counting
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Task 10 – Circuit Design
By the end of this task you should be able to:
 Describe the systems approach including Input, Process, Output
and Feedback.
 Describe the advantages and disadvantages of the use of
breadboards in circuit design.
 Describe the advantages and disadvantages of computer aided
design (CAD) simulation in circuit design.
On the next three slides you should:
 Show that you understand the systems approach by producing a
systems diagram for the alarm system for the DT Block.
 Show a photograph of a breadboard and list its advantages and
disadvantages.
 Show a screen shot from both Crocodile Technology and PCB
Wizard, explain why both pieces of software are used, and what the
advantages and disadvantages are of using them.
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Task 10.1 – Systems Approach
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Task 10.2 – Breadboards
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Task 10.3 – Computer Aided Design
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Task 11 – Circuit Manufacture
By the end of this task you should be able to:
 Describe at least one method of manufacturing printed circuit
boards.
 Describe how to undertake a fault finding exercise on a circuit board.
 Describe how to connect two different circuit boards together
effectively.
On the next three slides you should:
 Using a flow diagram, show the process of manufacturing a circuit
using either traditional methods or inkjet technology.
 Describe, using notes and sketches, how you would use a multimeter to undertake a fault finding exercise on a circuit board.
 Describe at least two different methods of connecting circuit boards
together, including their advantages and disadvantages.
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Task 11.1 – Circuit Manufacture
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Task 11.2 – Fault Finding
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Task 11.3 – Connecting Circuit Boards
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Task 12 – Calculations
By the end of this task you should be able to:
 Understand the basic units used in electronics and their multiples.
 Demonstrate how Ohm’s Law can be used in electrical calculations.
 Calculate the total voltage of resistors in series and parallel.
 Calculate the output voltage of a potential divider.
On the first slide, you should complete the tables showing you
understand all the basic electronic units and what their multiples
mean. One in each table has been completed for you.
One the following three slides you should complete the calculations
given to you using the formulae you have been given.
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Task 12.1 – Basic Units
Unit
Common
Name
Symbol
Alternate
Symbol
Named After
Voltage
V
none
Alessandro Volta
Capacitance
Current
Potential
Difference
Power
Resistance
Multiple
Common
Name
Symbol
Submultiple
106
10-3
103
10-6
10-9
10-12
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Common
Name
Symbol
micro
μ
Task 12.2 – Ohm’s Law
Formula
V
I
R
Answer 1
Using the formula given, complete the following
calculations:
1. What resistance could you use with a 10V power
supply to limit the current to 15mA?
2. A 430Ω resistor protects an LED in a 5V circuit. What
is the current through the LED?
3. 12mA runs through a protective resistor of resistance
820Ω. What is the voltage across the resistor?
Answer 2
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Answer 3
Task 12.2 – Resistors in Series and Parallel
Using the formulae given, complete the calculations below.
Resistors in Series Formula: Rt = R1 + R2 + R3
Answer
R1
R2
47 M
47 M
R3
47 M
Resistors in Parallel Formula: 1 = 1 + 1 + 1
R1
R t R1 R2 R3
R2
R3
Note: All three resistors in parallel are 47MΩ
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Answer
Task 12.2 – Potential Divider
Formula: Vs =
R2
.x V
R1 + R2
+12V
VS
R2 = 62kΩ
62k
Answer
R1 = 27kΩ
27k
A 27kΩ and a 62kΩ resistor are used in
a potential divider using a 12V power
supply. Using the set-up below,
calculate the output voltage of the
potential divider.
0V
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Task 13 – Anthropometrics and
Ergonomics
By the end of this task you should be able to:
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Define ergonomics and anthropometrics.
Discuss the interaction between people and the products they use and the
impact human size has on design.
Describe the application of anthropometric data to solve practical problems.
On the next two slides you should:
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Define what is meant by the terms ergonomics and anthropometrics and
suggest how they might impact of the design of products.
Collect a range of anthropometric data, i.e. height, arm length, etc… from at
least seven different people and present the data in graphical form.
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Task 13.1 – Ergonomics and
Anthropometrics
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Task 13.2 – Data Presentation
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Task 14 – Signage
By the end of this task you should be able to:
 Identify and describe a range signs and symbols giving valuable
information about materials, products and safety issues
On the next three slides you should:
 Identify and describe three signs relating to environmental issues,
 Identify and describe three signs relating to product standards,
 Identify and describe three signs relating to safety issues.
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Task 14.1 – Environmental Signage
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Task 14.2 – Standards Signage
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Task 14.3 – Safety Signage
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