How to charge two AA with hydroelectric generator?
For my Sophomore engineering class project I am making a hydroelectric generator that will need to charge two AA or smaller if not enough voltage is possible. The plan is to have my magnets spinning over the wrapped copper coils, but here's where I am stuck. I will have my two leads of the copper wire that are sanded down, but how do I go about charging the AAs form the wires? Do I have the positive copper wire go through some sort of diode then a container for the AAs that go back to the negative copper wire? Thanks in advance for the help. My engineering teacher is frustrating and says that I can go straight into the batteries which I know can't work.