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