Alternator off a car. Power it by wind or water. 13.4 Volts dc. Charge your batteries, run led's etc. Use your imagination. Fun fact: you can use a pencil to start fires by wiring it up to a car battery.
I think it might be a little more difficult than that with varying wind speed. Wouldn't they have an effect on voltage output? You would need a decent buck/boost regulator I think.
Difficult? Are you serious? You can even hand crank them. There is a built in voltage regulator. The current is limited by the speed it turns. Try it some time. Try and hold on to it when you turn the rotor by hand.
Decent Solar panel + voltage regulator + 18650 lithium batteries and 5mm LEDs. You can charge enough in 1 day to last for a week.
Alternator off a car. Power it by wind or water. 13.4 Volts dc. Charge your batteries, run led's etc. Use your imagination. Fun fact: you can use a pencil to start fires by wiring it up to a car battery.
I think it might be a little more difficult than that with varying wind speed. Wouldn't they have an effect on voltage output? You would need a decent buck/boost regulator I think.
Difficult? Are you serious? You can even hand crank them. There is a built in voltage regulator. The current is limited by the speed it turns. Try it some time. Try and hold on to it when you turn the rotor by hand.
If it keeps its voltage under a wide range of RPM, that's cool. I've never experimented with them. I'll have to look into it.