solar mobile charger

solar mobile charger

1. A PRESENTATION ON SOLAR MOBILE CHARGER SASWATI SOUMYA SHARMA Regd. no-1721105049 Roll no-35337 Branch-ELECTRICAL ENGINEERING

2. Contents: Introduction Objectives Block diagram Ckt diagram Working principle Advantages and disadvantages Applications Conclusion References

3. Introduction: The sun is made up of hydrogen and helium and it emits enormous amount of heat. A solar cell which forms a primary part of the solar mobile charger works on the principle of photovoltaic effect. It is made up of packets of energy called ‘photons’. When a photon is absorbed the energy of the photon is transferred to the electron.

4. Objectives: To study the basic operations of a solar mobile charger. To know the advantages and limitations of its use. To know the future scope of solar mobile charger. Maximizing the use of it in day to day life.

5. Solar panel: A solar panel is a set of solar photovoltaic modules electrically connected and mounted on a supporting structure. It can be used as a component of a larger photovoltaic system to generate and supply electricity in commercial and residential applications. A photovoltaic system typically includes an inverter,and sometimes a battery and solar tracker.

6. Regulator: A 5v voltage regulator is used to ensure that no more than 5v is delivered . If a DC supply of greater than 12v is used, excessive heat will be generated and the board may be damaged. If a DC supply of less than 5v is used, insufficient voltage will be present at the regulator’s output. If a power supply provides a voltage higher than 7or 8 volts, the regulator must dissipate significant heat.

7. Working principle: Photons attacking the solar cells are absorbed by any semiconducting material such as silicon. The energy of the absorbed photon is transferred to the electron. This energy knocks of the electrons from the atoms. It flows unidirectional through the material which provides electrical energy. An array of solar cells convert the solar energy into usable electrical energy.

8. Circuit diagram:

9. Andvantages: Solar energy is a renewable energy sources. Solar energy comes in free of charge. Solar cells panel on the solar charger does not require much maintenance. It also helps reduces cost such as electric bills as the solar charger source of energy is free.

10. Disadvantages: Solar charger need light to work. Charging a device by solar charger is much slower than the main charger.

11. Applications: Used for low power portable electronics, like calculators or small fans. Small portable models designed to charge a range of different mobile phones, iPods or other portable audio equipment. Public solar chargers permanently installed in public places,such as parks and streets which can use for free.

12. Conclusion: Battery life is more as high voltages are not developed. Adoptability is also high. So solar mobile charger is highly applicable in today’s world. Solar energy is renewable and can be used for the simplest of purpose i.e solar mobile charger.

13. References: SOLAR ENERGY BASED MOBILE CHARGER A. H. Tirmare , V. V. Khandare , P. S. Mali Assistant Professor, E &TC, Bharati vidyapeeth‟s College of Engg . Kolhapur, Maharashtra, India M.S.Varadarajan Veltech Dr.RR and Dr.SR Technical University Chennai, India“Coin Based Universal Mobile Battery Charger” IOSR Journal of Engineering (IOSRJEN) ISSN: 2250-3021 Volume 2, Issue 6 (June 2012), PP 1433-1438 www.iosrjen.org ISSN: 2250-3021 www.iosrjen.org 1433 Kalyani U. Chafle , B. M. Faruk , R. S. Shrivas , N.S.SawarkarResearch Scholar, Department of Electronics and Telecommunication Engineering, Jawaharlal Darda Institute of Engineering & Technology, Yavatmal , INDIA “Coin based mobile charger on solar energy” International Journal Of Research – Granthaalayah Vol.3(Iss.1):January,2015] ISSN- 2350-0530(O) ISSN2394-3629(P) Pastre , M. Krummenacher , F. Robortella , R. Simon- Vermot , R. Kayal , M. Ecole Polytech. Fed. de Lausanne, Lausanne, A fully integrated solar battery charger Circuits and Systems and TAISA Conference, 2009. NEWCAS-TAISA '09. Joint IEEE North-East Workshop

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