coin based mobile battery charger report part1

Seminar Report On

“COIN BASED UNIVERSAL MOBILE BATTERY CHARGER” A technical seminar report submitted in the partial fulfillment of the requirement for the Degree of Bachelor of Technology under BPUT.

Submitted By

WASIM AKRAM Regd. No.: 0901227040 7th Semester

Under the Guidance of

Saswat Ram

Department of Electronics and Telecommunication Engineering C. V. Raman College of Engineering, Bhubaneswar 2009-2013

CERTIFICATE

This is to certify that the seminar report entitled “Coin Based Universal Mobile Battery Charger” submitted by Wasim Akram, Registration No.0901227040, in partial fulfillment of the requirements for the award of Bachelor of Technology in Electronics & Communication Engineering to Biju Patnaik University of Technology, Rourkela is a bonafied work carried out by him/her under my supervision and guidance.

Seminar Coordinator

Seminar Guide

Department of E&TC

Department of E&TC

ACKNOWLEDGEMENT

I would like to express my immense gratitude and sincere thanks to seminar guide “Saswat Ram” whose co-operative guidance has helped me in successful completion of this seminar on “Coin Based Universal Mobile Battery Charger”. I am very much thankful to our supreme guide, for bestowing his blessings upon me in my entire endeavour. I would also like to thank our Professors Mrs. Aparajita Mohapatra and Mrs. Suchitra Sarangi for their valuable words of advice. I am also thankful to all the other lecturers in our department and my family and students of my class for their support and suggestions.

WASIM AKRAM Regd. No. : 0901227040 B.Tech, 7th Semester

ABSTRACT

The coin-based mobile battery charger developed in this paper is providing a unique service to the rural public where grid power is not available for partial/full daytime and a source of revenue for site providers. The coin-based mobile battery charger can be quickly and easily installed outside any business premises. The mobile phone market is a vast industry, and has spread into rural areas as an essential means of communication.While the urban population use more sophisticated mobiles with good power batteries lasting for several days, the rural population buy the pre-owned mobile phones that require charging frequently. Many times battery becomes flat in the middle of conversation particularly at inconvenient times when access to a standard charger isn't possible. The coinbased mobile battery chargers are designed to solve this problem. The user has to plug the mobile phone into one of the adapters and insert a coin; the phone will then be given a micro-pulse for charging. It does not bring a mobile from 'dead' to fully charged state. The charging capacity of the mobile is designed with the help of pre-defined values. It is, of course, possible to continue charging the mobile by inserting more coins. This compact and lightweight product is designed to cater for the growing number of rural mobile users worldwide. A suitable microcontroller is programmed for all the controlling applications. The source for charging is obtained from direct power grid and solar energy in case of non-availability of grid power.

Guided By:

Presented By:

Prof. Saswat Ram

WASIM AKRAM Reg.No: 0901227040

List of Figures & Tables Page No. 1. Figure 1 “Block Diagram of Mobile Battery Charger”

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2. Figure 2 “Flow Chart of Mobile Battery Charger”

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3. Figure 3 “Architecture of Micro Solar Inverter”

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4. Figure 4 “Interconnection of Power Supply ”

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5. Table 1 “Charging Requirements of Mobile Batteries”

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6. Table 2 “Specifications of a Mobile Battery Charger”

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CONTENTS Page No

1. Introduction

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2. Basic Assumptions

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3. Mobile Charger Design

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3.1

Input stage

3.2

Controller

3.3

Output and Display

3.4

Power

4. Flow Chart

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5. Micro Solar Inverter

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6. Interconnection of Power supply

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7. Specifications

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8. Conclusion

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9. References

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