This portable solar-powered lantern with auto bedlight for everyday use can be made with easily available components. The circuit diagram of the portable solar lantern cum bedlight is shown in Fig. 1. It is built around a 5.5V, 60mA solar panel, LDR1, transistor BC547 (T1), 1-watt white LED (LED2), two 1N4007 rectifier diodes (D1, D2), […]
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