This is an economic circuit of a mini solar lighting system, solar panel 6V/2W is used to charge a rechargeable 4V/800mAh through a current limiting circuit load that uses a LM317T adjustable regulator 3 pin (IC1). Assuming a sunny day 6 hours, a panel will enviarr 2 watts for approximately 900mAh battery. The current can be reduced by increasing the value of R1, for example, 8.2 to 10 ohms ohms.
Lighting Garden with Solar Energy Circuit Diagram
Specification of a typical solar panel
6V/2W:Maximum power (Pm):
2WWorking Voltage (Vmp):
9VWorking Current (Imp):
220mAOpen Circuit Voltage (Voc):
10.5VPower Tolerance: -3% to 5%
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