1. Solar water heater: It is a heating device that converts solar light energy into heat energy and heats water from low temperature to high temperature to meet the needs of hot water in people's life and production. Solar water heaters are divided into vacuum tube solar water heaters and flat plate solar water heaters according to their structural forms, mainly vacuum tube solar water heaters.
2. Solar calculator: When the sun shines on the PN junction made of P-type and N-type homogeneous semiconductor materials with different conductivity types, due to the strong electrostatic field built in the barrier region of the PN junction, current density, short-circuit current and open-circuit voltage can be formed under illumination. If electrodes are led out on both sides of the built-in electric field and connected to the load, theoretically, the loop formed by PN junction, connecting circuit and load will generate photovoltaic current.
3. Solar street lamp: During the day, under the control of intelligent controller, the solar panel absorbs sunlight and converts it into electric energy after being irradiated by sunlight. During the day, the solar cell module charges the battery pack, and at night, the battery pack supplies power to the LED light source to realize the lighting function.