Free VAWT Wind Generator
A great introduction to wind turbines is to build your own VAWT - a vertical axis wind turbine - which copes well with the turbulent winds typically found in built-up areas. They are typically easier to build than the more traditional horizontal axis wind turbines (the ones that look like windmills), and can be constructed from cheap easily obtainable materials such as PVC pipe and plywood. When completed this turbine easily generates sufficient power to charge a couple of rechargeable AA batteries or to light up a string of LEDs.
This simple wind turbine generator requires 6-8 hours of building time ideally spread over a couple of days to allow paint and glue to dry.
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