The document discusses the working principles, construction, advantages, and applications of solar mobile chargers, which use solar panels to convert light into electricity through the photovoltaic effect. It highlights various types of solar cells, the need for portable devices, and the benefits of utilizing solar energy, especially in remote areas. The report also addresses the limitations of solar chargers, including cost and efficiency variations based on sunlight exposure.

1. A
Seminar Report
On

2.  INTRODUCTION
 BLOCK DIAGRAM & CIRCUIT DIAGRAM
 WORKING PRINCIPLE OF SOLAR MOBILE CHARGER
 WHAT IS SOLAR CELL?
 CONSTRUCTION OF SOLAR PANEL
 ADVANTAGES & DISADVANTAGES
 APPLICATIONS
 CONLUSION 2

3.  Solar cell phone charger use solar panels to charge the cell
phone batteries.
 Solar cell works on the principle of “Photo Voltaic Effect”.
 There are public solar chargers for mobile phones which can
be installed permanently in public places such as streets, park
and squares.
 Solar cell phone chargers comes in different shapes and
configurations including folding and rotating types
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4. Solar
Panel Circuit
With
Voltage
Regulator
Cell Phone
Connector
to the Cell
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6. It works on the principle of photovoltaic energy that is,
when light falls on the solar cell, electron – hole pairs are
created in the n-type emitter and in the p-type base. The
generated electrons (from the base) and holes (from the
emitter) then diffuse to the junction and are swept away by
the electric field, thus producing. Certain modules are
selected and worked out to suitable specifications.
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7. A solar cell or photovoltaic cell is an electrical
device that converts the energy of light directly into
electricity by the photovoltaic effect.
Figure of Solar Cell
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9.  Amorphous Silicon solar cell (a-Si)
 Cadmium telluride solar cell(CdTe)
 Copper indium gallium selenide solar cells(CI(G)S)
 Crystalline silicon solar cell(c-Si)
 Gallium arsenide germanium solar cell (GaAs)
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From a Solar Cell to a PV
System or Solar Module

11. • A Photovoltaic system typically includes an array of
photovoltaic cells.
•Each cell consists of doped silicon (p-type and n-
type), in contact to form a junction, with each wafer
having an electrical connection.
• One of these cells may be capable of producing up to
0.7 Volt, with maximum power being produced at a
voltage of around 0.4 Volt.
•As a Silicon is a reflective, it is coated with a non-
reflective layer to increase light absorption.
Example :- Layer of Tough glass.
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Photovoltaic panels can use direct or indirect
sunlight to generate power, though they are most effective
in direct sunlight. Solar panel will still work even when the
light is reflected or partially blocked by clouds

13.  The main advantages of this concept is to save
electrical energy.
 The mobile phone solar charger makes the
device a favorite among outdoor enthusiasts.
 Solar mobile charger design is usually a small
and thin, so you can use this machine as
portable device
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14.  Solar panels produces electricity only during
daylight.
 The voltage from a solar panel can vary hugely,
depending upon the incident rays.
 The drawback of solar power is the cost of
purchasing as a solar charger will be 350 Rupees,
while a normal battery charger can cost less than
80 rupees.
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16. Solar Energy for Street
Light
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17. Solar Energy For Battery
Charging
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18. Solar Energy for Heating
Water
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19.  For Low power portable
Electronics, like calculator or
small fans.
 Solar charger can also be
used in charging flashlights.
 Solar charger can be used to
charge the iPods or other
portable audio equipments.
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20.  Solar mobile chargers are simple, portable and
ready to use, which can be used by any one
especially in remote areas.
 An exponential growing population, the
development and improvement of solar mobile
charger is essential to sustain world power
hunger.
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