Physics Investigatory Project Class 12 586a20

PHYSICS INVESTIGATORY PROJECT

PHYSICS INVESTIGATORY PROJECT

A IM:TO CONSTRUCT A PORTABLE MOBILE CHARGER.

Page 1

PHYSICS INVESTIGATORY PROJECT

NAME-ASHAR FATMI

CERTIFICATE THIS IS TO CERTIFY ASHAR FATMI OF CLASS XII-A HAS PERFORMED THIS PROJECT —“PORTABLE MOBILE CHARGER” UNDER MY SUPERVISION. ___________________ PRIYA MENDIRATTA Page 2

PHYSICS INVESTIGATORY PROJECT

PHYSICS TEACHER BHATNAGAR INTERNATIONAL SCHOOL

ACKNOWLEDGEMENT It is my duty to record my sincere thanks and deep since of gratitude to my respected teacher and lab assistants. I have benefited a lot from suggestions given to me by school faculty. I am indebted to my guide Mr.Brijmohan and Mr. Sharma my lab assistants for their constant in the implementation of the project

Page 3

PHYSICS INVESTIGATORY PROJECT

____________ ASHAR FATMI

CONTENTS  AIM APPARATUS THEORY RESULT PRECAUTIONS SOURCES OF ERROR BIBLIOGRAPHY

Page 4

PHYSICS INVESTIGATORY PROJECT

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

Page 5

PHYSICS INVESTIGATORY PROJECT

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

Page 6

PHYSICS INVESTIGATORY PROJECT

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 Page 7

PHYSICS INVESTIGATORY PROJECT

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.

Page 8

PHYSICS INVESTIGATORY PROJECT

CUIRCUIT DIAGRAM

Page 9

PHYSICS INVESTIGATORY PROJECT

RESULT

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

Page 10

PHYSICS INVESTIGATORY PROJECT

Page 11

PHYSICS INVESTIGATORY PROJECT

PRECAUTIONS The connections should be neat, clean and tight. Battery should be ideal. Resistance should be of the given resistance.

Page 12

PHYSICS INVESTIGATORY PROJECT

SOURCES OF ERROR

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

Page 13

PHYSICS INVESTIGATORY PROJECT

Voltage supply greater than required.

Page 14

PHYSICS INVESTIGATORY PROJECT

BIBLIOGRAPHY

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

Page 15

PHYSICS INVESTIGATORY PROJECT

THE END

Page 16