Physics Investigatory Project Class 12 3n326b

PHYSICS INVESTIGATORY PROJECT

PHYSICS INVESTIGATORY PROJECT

A IM:TO CONSTRUCT A PORTABLE MOBILE CHARGER.

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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

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PHYSICS INVESTIGATORY PROJECT

____________ ASHAR FATMI

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

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PHYSICS INVESTIGATORY PROJECT

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

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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

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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.

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PHYSICS INVESTIGATORY PROJECT

CUIRCUIT DIAGRAM

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PHYSICS INVESTIGATORY PROJECT

RESULT

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

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PHYSICS INVESTIGATORY PROJECT

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

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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.

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PHYSICS INVESTIGATORY PROJECT

Voltage supply greater than required.

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PHYSICS INVESTIGATORY PROJECT

BIBLIOGRAPHY

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

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THE END

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