Post on 15-Apr-2017
CONSUMER ELECTRONICSElectric Fan
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.
Yesterday………
External Parts
Fleming’s Left Hand Rule
Force
Current
Magnetic Field
Current
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.
Importance of electric fan
• Electric fan
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.
What is Electric fan?• It is a type of
electronic appliances that is run by an electronic motor.
Purpose Of The Electric Fan• To convert
electrical energy to mechanical energy.
Electrical Energy
Mechanical Energy
• To make consumers feel comfortable during hot seasons or summer days.
Internal Parts Of The Electric Fan
Selector Switch• It is a part of
electric fan that can intensify the produce air for the consumers.
Rotary Switch
Push Button Switch
Electric Motor• It is the main
part of the electric fan that produces mechanical energy to make the propeller rotate.
Rotor• It is the
movable part of the electrical motor that rotates
Stator• It is a non movable
part of the electric motor that provides electro magnetic energy to the rotor.
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
Setting Up The Speed Of The Electric Fan
Setting the speed of the electric fan requires:• Electric Motor• Selector Switch • Handtools• Terminal Block
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.
• Schematic : Read and understand first the schematic diagram.
• Preparation : Prepare the tools needed for the troubleshoot.
Let’s Start the Troubleshooting
Current and Resistance
• The Higher Resistance means a Low Current which will result slow rotation of the propeller.
• The Lower Resistance means a Higher Current which will result in fast rotation of the propeller.
Fan Speed Control
• Since that the no.1 in the selector switch has a slow rotation of rotor it means that the resistance needed is high.
• No.2 in the selector switch will have a moderate resistance and the no.3 has a lowest resistance
1 2 30
3 2 10
In Order To Do This Fan Speed Control
300 ohms320
ohms330
ohms
Common
3
2
1
Common
Line Cord
Motor
Selector Switch
Terminal Block
Example resistance
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.
Let’s Have a Quiz
Rules• No one is allowed to talk to their
seatmates.• Any form of cheating is not
allowed during the quiz.
Do your best and Good luck
Identification
1)• It is a movable part of the
motor which rotates.
2)• It is a non movable part of
the electric motor that provides electro magnetic energy to the rotor.
3)• It is a part of electric fan that
can intensify the produce air for the consumers.
Picture Identification
4)
5)
Identification
1) Rotor• It is a movable part of the
motor which rotates.
2) Stator• It is a non movable part of
the electric motor that provides electro magnetic energy to the rotor.
3) Selector Switch• It is a part of electric fan that
can intensify the produce air for the consumers.
Picture Identification
4) Electric Motor
5) Copper Winding
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.
Schematic Diagram of an Electric Fan
Assignment• Research about the different
models or types of electric fan and it’s uses.
• Write your assignments in your notebook.
Good Bye Class