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motor as a generator + buck converter Answered

Hi,
for a school project, I have to make a wind-powered smartphone generator. So would I be able to use a 12v motor as the generator and a boost converter to convert the current to 5v? If so what kind of voltage will the motor produce? And what kind of diode will I need to prevent backwards current? 
thanks. 

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steveastrouk

2 years ago

Find out what speed your motor spins at when you apply 12V. That's the speed it needs to be at to GENERATE 12V !

You are BUCKING not boosting, but you will find that at low windspeeds the generator can't keep up, and you really need a buck-boost converter. Sometimes you can cheat, and make an inverting buck supply, which takes in -12V...-1V and converts it to +5. That's easy for you, it depends how you wire the motor.

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steveastroukMukymooD

Answer 2 years ago

You could look at "axial flux windturbines", and make your own generator