Btech 3rd year Colloquim report.

1. Solar Mobile Charger
Gulafshan
COURSE NO. EL 380
CLASS S.NO. 30
DEPARTMENT OF ELECTRONICS ENGINEERING
ALIGARH MUSLIM UNIVERSITY,ALIGARH
2017-18

2. Contents
 Introduction
 Solar Panel
 Solar Process: How Solar Panel Works
 Specification of charger
 Block Diagram
 Circuit Diagram
 Practical examples
 Advantages
 Disadvantages
 Applications
 Conclusion
 Future Scope
 Source and references

3. Introduction
• Solar phone chargers is a
separate device that uses a
small solar panel to absorb
light and then converted
into electricity which used
by the mobile battery.
• Multiple phone can be
charged.
• Same device can be used for
different phones.

4. Solar Panel
 A solar panel is a set of solar
photovoltaic modules
electrically connected and
mounted on a supporting
structure.
 A photovoltaic module is a
packaged, connected
assembly of solar cell.
 Most efficient : 46%.
 Average efficiency: 15-20%.

5. Solar Process: How Solar Panel Works

6. Specification of charger
 Uses high-efficiency mono crystalline silicon.
 Solar panel: 5.5V/1000mA
 Output voltage: 5.0V
 Output current: 300-550 mA
 Time taken to charge mobile phone using the charger : about 60mintues for
typical mobile

7. Block Diagram

8. Circuit Diagram

9. World’s First Solar-Powered Mobile Phone
Samsung Guru E1107
 Launched in 2009
 Not a smart phone
 Talktime of 8 minutes in 1
hour

10. Samsung Blue Earth: The World First Solar
Powered Touchscreen Phone in Action
 One hour in sun gives 10 min of
talk time.
 Made up of recovered plastic
bottles
 Ecofriendly

11. LG POP ( LG GD510)
 10 minutes of sunlight to
provide 2.25 minutes of talk
time.

12. Advantages
 Cost Effective: It does not require electric power
 Versatile: it can be used for all types of mobile phones
 Uninterrupted Power Supply: it can be used to charge mobiles even during
power outages.
 Emergency Purposes: it hardly requires any electrical outlet It can therefore
be used purposes during emergencies and outdoor
 Compact Design: Solar mobile phone chargers are compact in size and easy to
carry around.

13. Disadvantages
 Quite expensive: The installation of Solar power panel .
 Charging time large: It can take six to eight hours to charge mobile
phones compared to the other.
 Solar panels are not able to tap more than 20% of its energy.
 Area requirement: Size of mobile phones is not sufficient for placing
solar panel.
 Weather problem: weather is not uniform all over the world.
 Solar Energy is uneven distributed across the planet.

14. Application
 For low-power portable electronics, like calculators or small fans, a
photovoltaic array may be a reasonable energy source rather than a battery.
 Solar chargers can charge lead acid or Ni-Cd battery bank up to 48 V and
hundreds of ampere-hours (up to 400 Ah) capacity.
 Small portable models designed to charge a range of different mobile phones,
cell phones, iPods or other portable audio equipment.
 Public solar chargers permanently installed in public places, such as parks,
squares and streets, which passersby can use for free.

15. Conclusion
 Renewable energy is not a new concept, nevertheless at an exponential
growing population, the development and improvement of them are essential
to sustain world power hunger.
 In 2050 the population expectation on earth is about 9 billion people, where
approximately 5 billion will use mobile phones.
 The application of renewable energy at portable devices starts to plays a
significant role at global energy saving. Solar chargers are simple, portable
and ready to use devices which can be used by anyone especially in remote
areas.

16. Future Scope
 Basically the solar mobile charger is designed for charging mobile battery. But
in future, by making some modifications we can use this charger to charge
batteries used in different portable devices like laptop, walky-talky, digital
camera etc.
 Cost of this circuitry can be reduced to certain extend so that common man
can easily purchase that and get benefit from that.

17. References
 International Journal of Innovative Research in Computer Science & Technology
(IJIRCST) ISSN: 2347-5552, Volume-2, Issue-4, July-2014 Rohit kamble,
Sameer Yerolkar, Dinesh Shirsath, Bharat Kulkarni
 https://i-cdn.phonearena.com/images/article/67493-image/Did-you-know-that-
Samsung-launched-the-first-solar-powered-cell-phone.jpg
 https://www.gadzetking.com/media/catalog/product/cache/1/image/9df78eab33
525d08d6e5fb8d27136e95/7/4/74350cff5fb2f5ce07c15e1bca1ef35d3.jpg
 Open Access Library Journal UG. Pragnesh B. Gohil, UG. Digvijay P. Jadav, UG.
Chirag N. Katakiya, Prof. Jaydipsinh B. Zala Department of Electrical Engineering,
Dr.Subhash Technical Campus, Junagadh, Gujarat.
 IOSR Journal of Electrical and Electronics Engineering (IOSRJEEE) ISSN: 2278-1676
Volume 2, Issue 2 (July-Aug. 2012), PP 19-24 1Mohamed Abdulhadi Elmahdi, 2
Prof.Ir. Sudjito.Suparman,PHD, 3Dr. Ir. Sholeh Hadi Pramono, MS Department of
Electrical Engineering, Brawijaya University Abstract:
 International Journal of Research in Advent Technology, Vol.3, No.3, March 2015 E-
ISSN: 2321-9637 50 Dhanil Vira1 , Mandeep Singh Saini2 , Uday Rote3 Department
of Computer Engineering1, 2, Department of Information Technology .

18. Thank You