Mobile phones need charging every day and in remote areas power is not always there; so solar charger is best option.
Sunlight is free and always available in day and small solar panels can make a charger for phone; also this project is about Simple Solar Mobile Charger Circuit
Circuit Working:
Parts List:
| Components | Values | Quantity |
|---|---|---|
| Solar Panel | 5.5V, 245mA | 3 |
| Boost Converter Module | 5V Output | 1 |
| Switch | Toggle SPST | 1 |
| USB Pin / USB Connector | Standard USB | 1 |
As shown in the circuit diagram above, the circuit uses three solar panels and each panel has a rating of 5.5 V and 245 mA.
Connect the panels in parallel, as these parallel connection maintains the same voltage of 5.5 V while increasing the current; therefore, the total current becomes 245 mA + 245 mA + 245 mA = 735 mA.
After that output goes to USB port through switch and phone charges from USB port.
Formulas with Calculations:
Below mentioned is the formula for Simple Solar Mobile Charger Circuit:
Panel voltage = 5.5V (constant in parallel)
Panel current = 245mA
Total current = 3 panels × 245mA = 735mA
Output power = Voltage × Current = 5.5V × 0.735A = 4.04W approx.
Therefore, this is enough for charging a normal phone.
How to Build:
To build a Simple Solar Mobile Charger Circuit following are the connections steps:
- First, gather all parts like in circuit.
- Next, join positive pins of three solar panels together and join negative pins of three solar panels together.
- Also, common positive goes to one side of switch and other side of switch goes to boost converter VIN+.
- Then common negative goes to boost converter VIN–.
- Finally, connect USB wire to USB socket for mobile charging.
Conclusion:
This Simple Solar Mobile Charger Circuit is easy to make, as it gives free power from sun.
In addition, it is small, safe and useful for phone charging and good project for students and beginners.