Improved Solar Pooja Lamp Also Powers Two Wall Clocks

This project harnesses ambient solar energy using a 10W photovoltaic panel to power both decorative orange LEDs for a Pooja lamp and an auxiliary power supply for two wall clocks. During daylight hours, the 17.5V solar panel generates electrical current that passes through diodes like the 1N5819 and 6A4, which prevent reverse current flow and protect the circuit. The system utilizes 500F 2.7V supercapacitors, which act as high-capacity energy storage reservoirs. Unlike standard chemical batteries, supercapacitors store energy electrostatically and can charge and discharge rapidly. A 2.7V 1W Zener diode regulates the voltage across the supercapacitor bank to prevent overcharging, keeping the voltage safely within the 2.7V limit. Transistors such as the BC547C and BC546 operate as switching elements or amplifier stages to control the current delivered to the 1W and 5mm orange and white LEDs. Additionally, a compact toroidal transformer works alongside the discrete semiconductor components to step up or condition the stored energy, ensuring a stable auxiliary low-voltage output capable of driving the two wall clocks continuously, even after the sun goes down.