The main objective of solar smart mobile is used as a solar charge system for mobile phones / tablets as spare charge source for emergency purpose which is also inbuilt of the mobile / mobile jacket.

1. SOLAR SMART MOBILE
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2. SERVAL OF THE PROJECT...
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3. CONTENTS
• OBJECTIVE
• INTRODUCTION
• EXISTING SYSTEM
• DESIGN SUMMARY EXISTING SYSTEM
• LIMITATIONS OF EXISTING SYSTEM
• PROPOSED SYATEM
• DESIGN SUMMARY PROPOSED SYSTEM
• SOLAR SYSTEM
• COMPARISION
• SALIENT FEATURES
• BUSINESS MODEL
• CONCLUSION
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4. OBJECTIVE
• The main objective of solar smart mobile is used as a solar charge system for mobile phones /
tablets as spare charge source for emergency purpose which is also inbuilt of the mobile /
mobile jacket.
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5. INTRODUCTION
• As a popularity and usage of smart phones and tablets have grown, the demand for portable and
hands on power supplies have also increased. The smart phones and tablets comes with a battery
which gets discharged in 4-5 hours. As a solution to this problem, in-built solar system
introduced.
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6. EXISTING SYSTEM
• Mobile phones are very common these days and so mobile chargers too. Most of us use it in
daily life. In fact they are used to charge the batteries inside the mobiles by providing them a
low level DC voltage and current. There may be different types of chargers used to charge
different mobile phones but the key functioning of those all are almost same.
• Latest mobile chargers are kind of power supply units that use the Switched Mode Power
Supply (SMPS) technology. To understand the working phenomenon of a mobile charger, we
need to understand the concept of Power Supply Unit (PSU). PSU is a device that transfers
electrical energy from one end to another by changing its fundamental characteristics according
to the requirements. Example of a PSU is an application that converts AC mains voltage to
regulated DC voltage. PSUs can be of two types depending on the mode of operation – Linier
and Switching.
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7. EXISTING SYSTEM
• In these switching mode chargers, energy transfer is done by continuously switching electrical
components (inductor, capacitor, etc.) on and off. We can control the output voltage/current by
varying the duty cycle, frequency or the corresponding phase. Using the SMPS technology
makes the chargers smaller and lighter by elimination of low frequency transformers. It also
presents a greater efficiency than the conventional methods which uses bulky transformers.
• The AC supply first enters through the line filters in the charger. Line filters are the kind of
electronic filters that are placed between an electronic device and an external line to
alter/attenuate the electromagnetic interference effect. Now filtered signal are made to pass
through the full wave bridge rectifier circuit. Rectifier converts the AC voltage to DC.
• Pulse transformers are categorized into two categories – power and signal transformers. The one
used here is a power transformer. It reduces the voltage level of the input power and gives a low
voltage power that is exactly required to charge the battery.
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8. DESIGN SUMMARYEXISTING SYSTEM
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9. LIMITATIONS OFEXISTING SYSTEM
• It requires AC power supply
• More circuitry is required
• Difficult to handle
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10. PROPOSED SYATEM
• Here the circuit utilize 6V/1A solar panel, and then single PN junction diode 1N4007 connected
towards positive line of solar panel this will avoid reverse polarity. An green LED connected
across the solar panel supply line after the C1 capacitor which provides status of supply output
from solar panel.
• SL100 transistor with 4.7v Zener diode provides regulated supply from solar voltage. Choose
the Zener diode specification according to your need. Here the Zener diode connected in base of
SL100 transistor with reverse biased polarity.
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11. DESIGN SUMMARYPROPOSED SYSTEM
• Expose the solar panel in sunlight, that solar energy will be converted as voltage by the
photovoltaic device (solar panel cell), then the green LED glows here the intensity of this LED
varies depends on the voltage produced by the solar panel. The Zener diode reduce and
regulates voltage and the SL100 transistor drives output voltage.
• Solder the positive output wire of the voltage regulator to the USB's positive. Similarly, connect
the negative output of regulator to the negative of USB. The USB port must be fixed properly to
the PCB. Next, connect the solar panel to the input of the voltage regulator (positive of solar
panel to positive input of voltage regulator and negative of solar panel to negative input). Once
everything is connected, measure the output voltage in open sun light. It should be around 5V.
Now, connect your mobile phone and you will see it charging.
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12. DESIGN SUMMARYPROPOSED SYSTEM
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13. DESIGN SUMMARYPROPOSED SYSTEM
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14. SOLAR SYSTEM
• The main objective of this solar power charge
controller project is to charge a battery by using
solar panels. This project deals with a mechanism
of charge controlling that will also do over
charge, deep discharge and under voltage
protection of the battery. In this system, by using
photo voltaic cells, solar energy is converted into
electrical energy.
• take the solar panel. On its back side, we can see
two connecting wires. One is in red color and the
other is in black. The red wire is the positive
terminal and the yellow wire is the negative
terminal. There is nothing much to do with the
solar panel.
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15. COMPARISION
BASIC REQUIREMENTS EXISTING SYSTEM PROPOSED SYSTEM
Compatible charging cables Yes (Wire / Wireless Chargers) No
Charging speed range 1A – 3.5A (wired)
3W – 300W (wireless)
1A – 2A
(depending on solar panel)
Quick charge Yes No
Types of Charging
Micro USB, USB 3.0, Type C, Wireless
charging adapters and wireless phone
charging pads
Inbuilt Solar panel / Inbuilt Solar panel in
Jacket
Available for all devices Yes Yes
Can you use device while charging Yes Yes
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16. SALIENT FEATURES
• Easy to use
• Cost reliable
• More life time
• Compatible for all mobiles
• Less circuitry is required
• Easy maintenance
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17. BUSINESS MODEL
• Production Cost (one product)
1. Solar Panel cost – 100
2. components – 50
3. Tax – 14.5%
• Selling Cost (one product)
1. Product cost – 171.75
2. Tax – 14.5%
3. Total Product cost – 196.65
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18. CONCLUSION
• The features of digital products are growing enormously, which triggers the frequent usages of
smart mobile in serval applications. Thus the battery backup time is getting decreased it will be
fun to build the solar charger system for mobile / tablets. As spare charging source for
emergency purpose which is also built of the mobiles / mobile jackets(safe covers).
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