A Design and Technology Site

This website contains numerous information sheets and exercises to enhance the study, understanding and teaching of DESIGN and TECHNOLOGY.

Index

1. Design Process
2. Electronics
3. Graphics
4. Mechanism
5. Technology and environment
6. Power tools
7. Website links
8. Structures
9. PCB work
10. Robolab
11. Gears and pulleys
12. Resistant Materials
13. Product design
14. PIC controllers
15. Forces/moments
16. Computer Controll
17. Technology and Cultures
18. Equipment and Processes

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Electronics Index

COMPONENTS / SYMBOLS

1. Electronic Components and Symbols - 1
2. Electronic Components and Symbols - 2
3. Electronic Components and Symbols - 3
4. Symbols Summary Sheet
5. Lesson Starter - Electronic Components
6. Lesson Starter - Electronic Tools and Equipment
7. Basic Electronics - Wordsearch Exercise

COMPONENT AND CIRCUIT DETAILS

1. Batteries and LEDs
2. Button Batteries / Coin Cells - Simple Circuits
3. Switches -1
4. Switches - 2
5. Switches - 3
6. Incandescent Lamps (Bulbs) 1
7. Incandescent Lamps (Bulbs) 2
8. Series Circuits
9. Circuits in Parallel
10. A Series / Parallel Circuit
11. Basic Circuit using Crocodile Technology®
12. Circuit Simulation Software
13. The Diode
14. Capacitors
15. Resistors
16. Using Crocodile Technology® to Test the
17. Relationship between Resistors and Capacitors
18. Test Instruments
19. Light Dependent Resistors
20. The Preset Resistor
21. Making a Light / Dark Sensor
22. Sequence Drawing - Light/Dark Sensor
23. LDR Examination Question - 1
24. LDR Examination Question - 2
25. LDR Examination Question - 3
26. Sensor Question - LDR
27. Switches, Diode, Transistor and General Circuit Questions
28. The Thermistor
29. Information Regarding Thermistor Circuits and Darlington Pairs
30. A Typical Temperature Sensor
31. Potential Dividers
32. SI Units and OHM's Law
33. Resistors - Questions
34. Relays and Practical Circuits
35. The Basics on Transistors
36. Transistors - Darlington Pairs
37. Transistor Exam Question
38. Transistor Breadboard Project
39. Transistor Darlington Pair Breadboard Project
40. Transistor Formulas and Calculations
41. Dual Transistor Multivibrator Circuit
42. Lesson Starter - Astable Transistor Circuit (Multivibrator)
43. Examination Questions : Dual Transistor Multivibrator Circuits
44. The Thyristor
45. Steady Hand Game - Thyristor Circuit
46. Breadboards
47. Examination Questions - Jigs

CONTROL SYSTEMS

1. Analogue / Digital Systems
2. Control Systems
3. Control Systems - An Example

MODULAR ELECTRONICS

1. Modular Electronics
2. Modular Electronics - Control Studio® -1
3. Modular Electronics - Control Studio® -2
4. Modular Electronics - Control Studio® -3

DIGITAL ELECTRONICS AND LOGIC GATES

1. Digital Electronics and Logic Circuits - 1
2. Digital Electronics and Logic Gates - 2 (Role of Transistors)
3. Basic Logic Gates and Logic Tables
4. Alternative representations of Logic Tables
5. Example Logic Circuit - 1
6. Example Logic Circuit - 2
7. The 4081B Integrated Circuit (AND gate) - a Practical Example.
8. The 4081B - Circuit Design
9. Digital Logic Circuit Exam Question 1
10. Digital Logic Circuit Exam Question 2
11. Digital Logic Circuit Exam Question 3
12. AND Gate Sample Question
13. AND Gate Sample Answer
14. The Binary System
15. Integrated Circuits - 1
16. Integrated Circuits - 2
17. Integrated Circuits - 3

THE 555 INTEGRATED CIRCUIT

1. The 555 Integrated Circuit (Timer) - a Simple Explanation
2. The 555 IC as an ASTABLE Circuit
3. The 555 IC as a MONOSTABLE Circuit
4. 555 MONOSTABLE Examples
5. The MONOSTABLE Circuit in more detail
6. Animation 1 - 555 Timer Circuit - Frames Created by Crocodile Technology 3D
7. Animation 2 - 555 Timer Circuit - Frames Created by Crocodile Technology 3D
8. Monostable Timer Examination Questions - 1
9. Monostable Timer Examination Questions - 2
10. ASTABLE 555 Breadboard Project
11. 555 ASTABLE Examples
12. The ASTABLE Circuit in more detail

THE 741 OPERATIONAL AMPLIFIER

1. The Operation Amplifier used as an Amplifier - a Simple Explanation
2. The 741 Operational Amplifier used as an Amplifier with Sensors
3. The 741 Operational Amplifier - an introduction
4. Inverting and Non-inverting 741 Amplifiers
5. The 741 Operational Amplifier as a Comparator
6. 741 Operational Amplifier Comparator Examination Questions and Information

THE 4017B DECADE COUNTER

1. How the 4017B decade Counter Works
2. Adding a Motor and a Solenoid to the 4017B Decade Counter

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