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:
1. 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
2. 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
3. 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)
4. 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

14. THANK YOU