The document discusses solar panels and solar mobile chargers. It begins with an introduction to solar cells and how they work using the photovoltaic effect to generate electricity from sunlight. It then provides specifications for solar panels and chargers, and discusses the manufacturing process for solar cells. Applications are mentioned, including using solar chargers for phones in remote areas without electricity. Advantages include being portable, renewable, and reducing environmental pollution. Disadvantages include the initial cost and reliance on sunlight.

1. by
SHAIK IMRAN (4/4 ECE-C )

2.  Introduction
 Solar Process
 PV cell specification
 Specifications Of Charger
 Block Diagram
 Circuit Diagram
2Solar panel

3.  The sun is a star made up of hydrogen and helium gas and it
radiates an enormous amount of energy every second.
 Solar cell works on the principle of photovoltaic effect. Sunlight
is composed of photons, or "packets" of energy.
 These photons contain various amounts of energy corresponding
to the different wavelengths of light.
 When a photon is absorbed, the energy of the photon is
transferred to an electron in an atom of the cell.
 materials used for photovoltaic cells includes: monocrystalline
silicon,cadmium telluride,amorphous silicon etc.
Itroduction

4. The basic component of a solar cell is pure silicon.

5. NEGATIVE
POSITIVE

6. OPERATION OF PV CELL
 The operation of a photovoltaic (PV) cell requires
3 basic attributes:
 The absorption of light, generating electron-
hole pairs.
 The separation of charge carriers of opposite
types.
 The separate extraction of those carriers to an
external circuit.

7. MANUFACTURING PROCESS
 Raw Materials: The basic component of a solar cell is
pure silicon, which is not pure in its natural state
 • Purifying the silicon
 • Making single crystal silicon
 • Making silicon wafers i.e. making small small
silicon crystal.
 • Doping :Doping is used to increase the strength of
the material.
 • The anti-reflective coating :It is a type of opticlal
coating applied to the surface of lenses. It improves
efficiency.
 • Encapsulating the cell

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

12. APPLICATIONS
 in public places
 charge lead acid or Ni-Cd battery bank up to 48
V and hundreds of ampere-hours (up to 400 Ah)
capacity.
 calculators ,watches, and flashlights
 In remote areas

13.  Uses low input voltage to produce high voltage
spikes of output for charging.
 Utilize renewable sources.
 Bring convenience to the users.
 Useful for users in remote area & Portable for
travelers.
 To save the electricity bill cost in the long run.
 Reduce environmental pollution.

14.  Cost is high.
 It is also applies the portable device.
 Charger is different type such as-Laptop , cell
phone & MP3 player.
 Solar charger have no capacity to store the
energy.
 They are only for use small amount of time.
 It will not work in cloudy day.
 It may not be ideal in your situation.

15.  Relatively small size allows mobile use.
 System required electrical start-up power.
 Solar concentrator can be used with any heat
source.
 Higher efficiency then photovoltaic system of the
same scale.
 Ability to recharge AA batteries any time & any
where there is sun light.
 Low maintenance , emission-free &
environmentally-friendly power source.

16. WHY DO WE NEED A SOLAR MOBILE CHARGER
Save Earth, Save your Country
 FACT – If 3% of our population starts using Solar
power for charging their mobile phones, our country
will save around 5% of power which equal to Peak
power deficit faced by us every month !

17.  In solar mobile charger ripples will not be there as we use DC
power directly to charge the mobile.
 Battery life is more as high voltages are not developed.
 Versatility of Solar mobile charger is high.
 Life of the battery will be high as we use solar mobile charger.
 Adaptability is high.

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Silent
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