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Electrical Workshop Module 3: Basic Electrical Components (1-week)

ATE 1012 Grade 10. Electrical Workshop Module 3: Basic Electrical Components (1-week). Module Objectives. Identify basic electrical components such as: Lamps, motors and buzzers. Resistors, LDRS, capacitors and inductors. Diodes. Understand the applications of each component.

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Electrical Workshop Module 3: Basic Electrical Components (1-week)

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  1. ATE 1012 Grade 10 Electrical Workshop Module 3: Basic Electrical Components (1-week) Eng. Rose Hasan

  2. Module Objectives • Identify basic electrical components such as: • Lamps, motors and buzzers. • Resistors, LDRS, capacitors and inductors. • Diodes. • Understand the applications of each component. • Understanding components’ coding. Eng. Rose Hasan

  3. Module Contents • Introduction • Basic Electrical Components • Components Coding • Class and Lab Activities Eng. Rose Hasan

  4. Introduction • Have you ever opened your personal computer (PC) or your radio from the inside? Eng. Rose Hasan

  5. ElectricalComponents Eng. Rose Hasan

  6. Electrical Components Eng. Rose Hasan

  7. Electrical Components Eng. Rose Hasan

  8. Electrical Components Video Eng. Rose Hasan

  9. Electrical Components Eng. Rose Hasan

  10. Components Coding: • Resistance Coding: • Resistors are specified by their: • Resistance Value • Tolerance • It is indicated by: color code method. • Resistance is measured in _____ ?_____. Eng. Rose Hasan

  11. Components Coding: Cont… • Most resistors have 4 bands: • The 1st band gives the first digit. • The 2ndband gives the second digit. • The 3rdband indicates the number of zeros. • The 4thband gives the tolerance Eng. Rose Hasan

  12. Resistor Color Code Eng. Rose Hasan

  13. Exercises: • State the resistor’s value and tolerance for the following resistors: R= R= Eng. Rose Hasan

  14. Exercises: R= R= Eng. Rose Hasan

  15. Exercises: Eng. Rose Hasan

  16. Resistor Color Code Calculator • http://samengstrom.com/nxl/3660/4_band_resistor_color_code_page.en.html • Search the net for resistor color code calculator and post it on my Wiki…. http://mywork-iat.wikispaces.com Eng. Rose Hasan

  17. Components Coding: • Capacitor Coding: Capacitors are usually specified by three quantities: • _______________________ • _______________________ • _______________________ • A number code is often used on small capacitors where printing is difficult. • The 1st number ______________________ • The 2nd number ______________________ • The 3rd number is _______________________ • The code gives the capacitance in _________________ • Remark: Ignore any letters - they just indicate tolerance and voltage rating. Eng. Rose Hasan

  18. Example • You have a capacitor with "104" stamped on it. • The first two digits are: ______ • The third digit is: _______ • The forth digit is:__________ • So, C=__________________ Eng. Rose Hasan

  19. Exercises: • State the capacitance value for the following capacitors: Eng. Rose Hasan

  20. Exercises: Eng. Rose Hasan

  21. Activity 1: Identify resistors from color code • Items Required: Eng. Rose Hasan

  22. Activity 1: Identify resistors from color code (Steps) • Using the color coding method, identify the resistance value of various resistors • Fill the table below: Eng. Rose Hasan

  23. Activity 2: Identify capacitance for various capacitors • Items Required: Eng. Rose Hasan

  24. Activity 2: Identify capacitance for various capacitors (Steps) • Identify the capacitance value of various capacitors. • Fill the table below: Eng. Rose Hasan

  25. Review Basic Electrical Components Eng. Rose Hasan

  26. Find the resistor value: Eng. Rose Hasan

  27. Find the capacitor value: Eng. Rose Hasan

  28. Finding the Resistance Value using the Resistor Color Wheel 0 1 9 2 8 3 7 4 6 5 Eng. Rose Hasan

  29. Practical Activity: Find the Resistance & the Capacitance values • Items Required: Eng. Rose Hasan

  30. Steps: Eng. Rose Hasan

  31. Activity 3: light intensity control using potentiometer • Items Required: Eng. Rose Hasan

  32. Activity 3: light intensity control using potentiometer (Steps) • Connect the following circuit: Eng. Rose Hasan

  33. Activity 3: light intensity control using potentiometer (Steps) • Rotate the spindle of the potentiometer. What do you observe on the light brightness? ---------------------------------------------------------- ---------------------------------------------------------- • State an application of potentiometers? ------------------------------------------------------------------------------------------------------------------ How can you know the resistance range of the potentiometer ??? Eng. Rose Hasan

  34. Activity 4: Demonstrate LDR Operations • Items Required: Eng. Rose Hasan

  35. Activity 4: Demonstrate LDR Operations (Steps) • Connect the following circuit: Eng. Rose Hasan

  36. Activity 4: Demonstrate LDR Operations (Steps) • Expose the LDR to light. What happen to the brightness of the lamp? --------------------------------------------------------------------------------------------- ------------------------------------------ • Put the LDR in the dark. What happen to the brightness of the lamp? --------------------------------------------------------------------------------------------------------------------------------------- • State some applications of LDRs. --------------------------------------------------------------------------------------------------------------------------------------- Eng. Rose Hasan

  37. Future Plan • Write your opinion about today’s class on my Wiki … • Be prepared to a Quiz next Class in module #3. • Next Class: Start with Module #4 Eng. Rose Hasan

  38. Electrical Motor Eng. Rose Hasan

  39. Resistors Eng. Rose Hasan

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