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Hello, I have used a dc motor as a generator using human physical motion to rotate the motor. My voltage goes from 0volts all the way up to 30+ volts.. How can I control the voltage to 14volts dc. A usable voltage to charge a car battery. |
September 23, 2018 |
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Use an LM317 https://www.onsemi.com/pub/Collateral/LM317-D.PDF Or, if you're really fussy about efficiency, a boost/buck SMPS of sufficient power. |
by mikerogerswsm September 24, 2018 |
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Hello, I'm really curious about your buck/boost suggestion. If I understand correctly, this would have power output regardless of speed rotation and would buck or boost as speed changes. Is this what they use for wind turbines? And would it be easier to build my own or just buy one made for wind turbine? |
September 25, 2018 |
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Hello, I'm really curious about your buck/boost suggestion. If I understand correctly, this would have power output regardless of speed rotation and would buck or boost as speed changes. Is this what they use for wind turbines? And would it be easier to build my own or just buy one made for wind turbine? |
by Reodo September 25, 2018 |
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Yes, buck boost smps is the best way to go, see: https://en.wikipedia.org/wiki/Buck%E2%80%93boost_converter If you want to build your own you could use the AD recommmendations: But it would save a lot of time to buy a ready-made item with the right range of input and output voltages, and of course power. The difference is cost, if you go for overkill it may get very expensive. |
September 27, 2018 |
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