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Demonstration Solar Cell
For demonstration purpose. The unit consists of a sensitive solar cell mounted on a box with 4mm sockets and ON/OFF switch. A mini-motor is mounted inside the box with its shaft protruding out on one side of the box. A plastic fan is mounted on the shaft. When switched ON with sufficient sunlight falling on solar cell, the motor rotates which can be observed from the rotation of the fan, showing conversion of solar energy into electrical and then into mechanical energy.