This document discusses electric fans, including their internal parts and how to set their speed. It contains the following key points: 1) The internal parts of an electric fan include a rotor, stator, selector switch, electric motor, and copper winding. The rotor rotates while the stator provides electromagnetic energy. 2) To set fan speed, the resistance in the circuit must be adjusted using a selector switch and terminal block. Higher resistance yields slower speed while lower resistance results in faster speed. 3) Troubleshooting fan speed involves using a multimeter to test the resistance values in the circuit and ensuring they match the desired settings for slow, medium, or fast speed.

1. CONSUMER ELECTRONICS
Electric Fan

2. Morning Prayer (Our Father)
• Our Father, Who art in heaven
Hallowed be Thy Name;
Thy kingdom come,
Thy will be done,
on earth as it is in heaven.
Give us this day our daily bread,
and forgive us our trespasses,
as we forgive those who trespass
against us;
and lead us not into temptation,
but deliver us from evil. Amen.

3. Yesterday………

4. External Parts

5. Fleming’s Left Hand Rule
Force
Current
Magnetic Field
Current

6. Objectives
The students can identify the
internal parts of an electric fan.
The students can able to
perform troubleshooting in the
electric fan in setting the rotor’s
speed.

7. Importance of electric fan
• Electric fan

8. Group Activity
(Text Twist)
Each group will rearrange the letters to
form a words that i will discuss for the
topic of the day. ( 5 minutes )
After forming a words kindly paste
those words in the illustration board.

9. What is Electric fan?
• It is a type of
electronic
appliances that
is run by an
electronic motor.

10. Purpose Of The Electric
Fan
• To convert
electrical
energy to
mechanical
energy.
Electrical
Energy
Mechanical Energy

11. • To make
consumers feel
comfortable
during hot
seasons or
summer days.

12. Internal Parts Of The
Electric Fan

13. Selector Switch
• It is a part of
electric fan that
can intensify
the produce air
for the
consumers.
Rotary Switch
Push Button Switch

14. Electric Motor
• It is the main part of
the electric fan that
produces
mechanical energy
to make the
propeller rotate.

15. Rotor
• It is the
movable part
of the
electrical
motor that
rotates

16. Stator
• It is a non movable
part of the electric
motor that provides
electro magnetic
energy to the rotor.

17. Copper Winding
• It is a set of
copper wire that
supplies electricity
in the stator and
rotor.
Copper Winding in
Rotor
Copper Winding in
Stator

18. Setting Up The Speed Of
The Electric Fan

19. Setting the speed of the electric fan
requires:
• Electric Motor
• Selector Switch
• Handtools
• Terminal Block

20. Keep in mind that before doing
this trouble shoot:
• Safety : Before
working, the
technician is need
to focus to avoid
accidents not just
ourselves but also
the safety of
components.

21. • Schematic : Read and
understand first the
schematic diagram.
• Preparation : Prepare
the tools needed for the
troubleshoot.

22. Let’s Start the
Troubleshooting

23. Current and Resistance
• The Higher Resistance
means a Low Current
which will result slow
rotation of the
propeller.

24. • The Lower
Resistance means
a Higher Current
which will result in
fast rotation of the
propeller.

25. Fan Speed Control

26. • Since that the no.1
in the selector
switch has a slow
rotation of rotor it
means that the
resistance needed
is high.

27. • No.2 in the selector
switch will have a
moderate resistance
and the no.3 has a
lowest resistance

28. 1 2 30

29. 3 2 10

30. In Order To Do This Fan
Speed Control

31. 300
ohms
320
ohms
330
ohms
Common
3
2
1
Common
Line
Cord
Motor
Selector
Switch
Terminal
Block
Example resistance

32. After wiring….
• With the use of
tester, test the
wiring if it has a
right value of
resistance.
• By connecting the
test probes of tester
in the line cord.

33. Let’s Have a Quiz

34. Rules
• No one is allowed to talk to their
seatmates.
• Any form of cheating is not allowed
during the quiz.

35. Do your best and Good
luck

36. Identification

37. 1)
• It is a movable part of the motor
which rotates.

38. 2)
• It is a non movable part of the
electric motor that provides
electro magnetic energy to the
rotor.

39. 3)
• It is a part of electric fan that can
intensify the produce air for the
consumers.

40. Picture Identification

41. 4)

42. 5)

43. Identification

44. 1) Rotor
• It is a movable part of the motor
which rotates.

45. 2) Stator
• It is a non movable part of the
electric motor that provides
electro magnetic energy to the
rotor.

46. 3) Selector Switch
• It is a part of electric fan that can
intensify the produce air for the
consumers.

47. Picture Identification

48. 4) Electric Motor

49. 5) Copper Winding

50. Individual Activity
• Today, we need to
control the speed of the
electric fan based on
the discussion.
• I will call 3 students to
perform trouble shooting
in the electric fan.

51. Schematic Diagram of an
Electric Fan

52. Assignment
• Research about the different
models or types of electric fan
and it’s uses.
• Write your assignments in your
notebook.

53. Good Bye Class