5.5 Solar Power System

Parameters

Voltage: 5V

Current: 80mA

Power: 400mW

Dimensions: 60*60mm

Codes are not required in this project. Importantly, we learn about the new environmental energy — solar power.

When good illumination is provided, LED will light up in yellow. The brighter the light is, the brighter the LED will be.

The solar panel absorbs light and directly or indirectly converts solar radiation into electricity. Compared with ordinary coal power generation, solar, wind and water power are more energy-saving and environment-friendly.

The Sun emits energy in waves with a wide range of wavelengths, from ultraviolet to visible and infrared light.

Wavelength of Ultraviolet:150~400nm;

Wavelength of Visible Light:400~760nm;

Wavelength of Infrared Light:760~4000nm;

The panel absorbs one of these ranges of wavelength and converts them into electricity.

Q: Why does solar panel still work without sunlight?

A: It works with not only sunlight but also ambient light. The brighter the light is, the greater the voltage will be, and the lighter the LED will be.