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