A conventional wind turbine needs to turn a series of gears in order to spin the turbine fast enough to make electricity. As a result, you need a fairly strong wind to turn the blades. The folks at Windtronics have developed an Ingenious Wind Turbine design that has no gears. The blades spin free so it can create electricity in the lightest breeze.
At the heart of any turbine generator is simply a series of magnets that spin inside a copper coil. The Windtronics design puts the magnets of the turbine on the actual blades and then wraps a ring with the coil around the outside of the blades.
The result is a fairly inexpensive (about $5000 US) consumer wind turbine that can be used in areas with far less wind. Another bonus is that, since it needs much less torque to spin, it can be mounted directly on to many houses.
Via Windtronics (http://www.windtronics.com)
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