This document describes the design of a solar-powered mobile phone charger. It begins with an introduction to solar cells and the photovoltaic effect. It then discusses the specifications of the charger, which uses a 5.5V/1000mA solar panel to output 300-550mA to charge a mobile phone in about 60 minutes. The document includes a block diagram and circuit diagram of the charger. It concludes that the solar charger provides ripple-free charging to increase battery life without developing high voltages.
2. • CONTENTS
Introduction
ï‚¢ Solar Process
ï‚¢ PV cell specification
ï‚¢ Specifications Of Charger
ï‚¢ Block Diagram
ï‚¢ Circuit Diagram
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Solar panel
2
3. Itroduction
Introduction
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The sun is a star made up of hydrogen and helium gas and it radiates an
enormous amount of energy every second.
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Solar cell works on the principle of photovoltaic effect. Sunlight is
composed of photons, or "packets" of energy.
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These photons contain various amounts of energy corresponding to the
different wavelengths of light.
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When a photon is absorbed, the energy of the photon is transferred to an
electron in an atom of the cell.
6. Specifications Of
Charger
Uses high-efficiency mono crystalline silicon.
ï‚¢ Solar panel: 5.5V/1000mA
ï‚¢ Output voltage: 5.5V
ï‚¢ Output current: 300-550 mA
ï‚¢ Time taken to charge mobile phone using the charger
: about 60mintues for typical mobile.
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11. Conclusion
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In solar mobile charger ripples will not be there as we use DC
power directly to charge the mobile.
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Battery life is more as high voltages are not developed.
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Versatility of Solar mobile charger is high.
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Life of the battery will be high as we use solar mobile charger.
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Adaptability is high.