My son and I are working on putting together his PicoTurbine Windmill for his 4th grade Science Fair. I am not sure if you are intimately familiar with this project, but I have a question…
We have been able to get the expected 1.5-2.0 volts from the turbine by checking the output with a digital multimeter. But it does take a good amount of spinning the rotor to get to that point.
My son wants to know why we can’t get more voltage from the thing, and it made me question another configuration.
Now, if I get 8 magnets instead of the 4 you sent in the kit, and position them every 45 degrees (and still reverse polarity each magnet) I should be able to double my output voltage, or at least allow my son to have to only turn the rotor half as fast to get 2 volts.
This leads to my question: Do you know the rating of that dual color LED that came with your kit? By my expectations, I should see 3 to 4 volts on this turbine when I get it to spinning the same speed as before; I just don’t want to smoke the LED in the process. Mike
More magnets would help achieve more voltage!
You would not smoke the led! Many have done this in the past.