I have to build a mini solar car for a school project and i have three solar cells that i bought. whenever i hook up the solar cells i get a reading between 1.5-1.8 volts, but when i hook it up to the motor it wont start it. According to the box the motor only requires 1.5v for it to run. Its not the motor either because i hooked it up to a battery and it worked. Any Help please?? thank you
Voltage does not run a motor: current flow does. THe solar cells are generating a static voltage that cannot be sustained when the motor tries to draw current. You need more solar cells for that motor. Look at the current rating for the motor, and the cells. They have to be matched.
To troubleshoot the issue and find a solution, considering the following points:
1. Check the current rating of both the motor and the solar cells: The voltage alone may not indicate whether the motor can run or not. Make sure to check the current required to operate the motor and compare it with the output current of the solar cells. If the motor requires a higher current than what the cells can provide, it may explain why the motor is not starting.
2. Assess the power output of the solar cells: Solar cells provide a voltage, but it is important to also consider their power output, which is determined by both voltage and current. Calculate the power output of the solar cells by multiplying the voltage and the current. If the power output is not sufficient to meet the power requirements of the motor, additional solar cells or a different power source may be needed.
3. Consider the efficiency of the system: Solar cells have an efficiency rating that indicates how effectively they convert sunlight into electrical energy. If your solar cells have a low efficiency, it means they may not be generating enough power to drive the motor. In this case, additional solar cells or more efficient ones could be necessary.
4. Evaluate the connection between the solar cells and the motor: Ensure that you have connected the solar cells to the motor correctly. Double-check the polarity of the connections to make sure they are properly aligned. Any loose or faulty connections can prevent the motor from starting.
5. Consider testing directly under sunlight: It is preferable to test the setup in direct sunlight. If you are indoors or the light conditions are not optimal, it might affect the performance of the solar cells. Take the setup outside and try again to see if the motor starts running.
6. Seek additional power sources: If after trying the above suggestions, the motor still does not start, you may need to consider alternative power sources such as using a battery or connecting multiple solar cells in parallel or series to increase the voltage or current output.
Remember to prioritize safety precautions when working with electrical components and follow any guidelines provided by your school and project requirements.