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I've seen a video in Spanish in which the kid uses a similar fan to mine (although smaller) and it generates up to 13 V. And in a second video (also in Spanish) the guy changes the motor of the computer's fan for a generator and this only generates 2 V. This is so confusing :confused:

How can I differentiate between a DC motor and a generator?

Thank you all for your responses. So, is settle, the motor is not an option. Therefore, I ask the following question: There is no way to buy the fan with the generator integrated? Just as the on I have but instead of being a motor, it would be a generator.

Thank you very much for your response. I've heard that before (the efficiency part). There is no way to buy the fan with the generator integrated? Just as the on I have but instead of being a motor, it would be a generator. I don't quite understand the difference, the motor can create energy as...

Good evening, everybody, I'm new here so if I made any mistake, I apologize in advance. I've been thinking in a project from a while now and I want to share it with you seeking for your help and wisdom. Basically, I want to build a small wind turbine in order to charge a smartphone or a tablet...