project on CONSTRUCT A PORTABLE MOBILE CHARGER

Today we will see how to make project on 'CONSTRUCT A PORTABLE MOBILE CHARGER' this project is only for class 12th student and this project is belongs to 'PHYSICS' in this project we will see how can we make this project

Contents

1. AIM
2. APPARATUS
3. THEORY
4. RESULT
5. PRECAUTIONS
6. SOURCES OF ERROR
7. BIBLIOGRAPHY

AIM

TO CONSTRUCT A PORTABLE MOBILE CHARGERWHICH SUPPLIES 7.5V TO CHARGE SAMSUNG GALAXY NOTE I.

APPARATUS

 PCB BOARD
 BATTERY
 TRANSISTOR {7805 PNP-IC}
 LED
 REISTOR {1.5 K approximately}
 BATTERY CAP
 USB PORT
 CONNECTING WIRE
 SOLDERING IRON
 SOLDERING WIRE

Theory

MOBILE CHARGER:-
A device used to charge the battery of a phone. It converts the high voltage supply to a lower voltage so the phone could get charged.

RESISTORS:-
The barrier to the flow of current is called resistance. The devices which provide resistance is called resistor.

TRANSISORS:-
It is a semiconductor device used to switch electronic signal into electric power. It is composed of semi conductor material with at least 3 terminals for conductance of external circuits.

LED:-
Light emitting diode is two lead semi conductor light source. It resembles pnjunction diode, which emits light when activated.

BATTERY:-
It is a device containing one or more cells that convert chemical energy into mechanical energy.

RESULT

Hence Samsung galaxy note-I is charged by my portable mobile charger.

PRECAUTIONS

1.The connections should be
neat, clean and tight.
2.Battery should be ideal.
3.Resistance should be of the
given resistance.

SOURCES OF ERROR

 Resistance is greater or
lesser than required.
 Transistor is broken.
 Battery is not ideal.
 U.S.B port is broken.
 Voltage supply greater than required.

BIBLIOGRAPHY

 WIKIPEDIA.COM
 YOUTUBE.COM
 CONCEPT OF PHYSICS
BY- H C VERMA.

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