Solar Motor

Project Number: 5

Description: In the preceding circuit, replace the yellow LED (D5) with the motor (M4, in either direction) and place the wind fan on it. Now press the switch and watch how the voltage changes as the solar cell runs the fan. Depending on your light source, the fan may need a push to get started or may not work at all.

Snappy: The motor needs less electricity from the solar cell as it speeds up, so the solar cell is higher as the motor gets faster.