How to Use Supercapacitor for Low-power Applications

Have you ever wondered how a clock keeps running using just light? This project uses a solar PV panel to capture energy from the sun or room lights. When the light shines on the solar panel, it creates electricity. Instead of sending this electricity straight to a standard battery, the circuit stores it inside a special component called a supercapacitor. A supercapacitor is like a tiny, super-fast storage tank for electricity. Unlike traditional batteries that use chemicals to store power, supercapacitors store energy in an electric field, allowing them to charge up very quickly. Connected to the system are ordinary resistors and other capacitors, which help control the flow of electricity so it moves smoothly. Once the supercapacitor has stored enough energy from the solar panel, it slowly releases that stored power to run a small clock mechanism. When the sun goes down or the lights turn off, the supercapacitor acts like a reserve tank, keeping the clock ticking steadily using the energy it saved up earlier. This creates a continuous loop of gathering, storing, and using clean energy without needing any disposable batteries.