Electronic Circuits and electronic circuits, electronic schematics plus an extensive resource for hobbyists, inventors and engineers

DiscoverCircuits.com, has 40,000+ electronic circuits, cross-referenced
into 500+ categories.    We have searched the web to help you find quick design ideas.
We make every effort to link to original material posted by the designer. 
Please let us if you would like us to link to or post your design.

HOME Schematics Index Hobby Corner Dave's Circuits Electronic Resources Contact Info
Imagineering Ezine    Discover Solar Energy Dave Johnson & Associates Faraday Touch Switches

HOME Schematics Discover Forum Hobby Corner Dave's Circuits Electronic Resources Contact Info


What the World Needs Now --
Old Style Windmills that Generates Energy  

Previous Issues

My new Lubbock Texas home has a lot of wind.  I would love to be able to tap into that renewable energy resource.  However, my neighborhood home owner’s association has covenants which restrict the installation of wind generators on tall towers.  But, they would allow the installation of wind mills on shorter towers as long as they were in the “old style” windmill design, using steel or wood supports with multiple wood pickets forming the propeller.  What I would like to see is an electrical power producing wind generator specifically designed for these older style windmills.  I would imagine that the shaft speed of such a device will be much lower than a conventional wind generator but would produce a higher torque.  Maybe the diameter of the blades could be as large as 20 feet.  To fully utilize the slow shaft speed, some kind of an efficient transmission would be needed between the propeller shaft and the alternator.  Perhaps a two stage planetary gear with an overall speed reduction of about 20:1 would work.  The propeller of the mill might only spin at 300 RPM while the alternator would spin at 6,000 RPM.  Although the slower propeller spin would mean a reduction in overall efficiency, it still might be possible to crank out a few kilowatts of power in a stiff wind.  

There is some beauty in these old wind mills.  You can still find them on farms and ranches scattered over the world.  They were mostly used to pump water.  My water well is pretty deep, so I would rather use electricity produced by one of these things to supply my water needs.  I would tie the output of the wind generator alternator to a grid tied inverter, so any excess electricity generated would cause my power meter to run backwards.  It would certainly be an interesting project, mixing old technology with the new.

Conventional 5KW Generator   Old Style Wind Mill   Old Style Wind Mill  Old Style Wind Mill
Old Style Wind Mill   Old Style Wind Mill  Old Style Wind Mill
 Planetary Gear High Power Alternator

First Quarter,  2012    


HOME Schematics Index Hobby Corner Dave's Circuits Electronic Resources Contact Info
Imagineering Ezine    Discover Solar Energy Dave Johnson & Associates Faraday Touch Switches


 About Us   |  Advertise on DiscoverCircuits.com   |   Report Broken Links  |    Link to DiscoverCircuits.com  |    Privacy Policy

Copyright  2002 - 2015 David A. Johnson & Associates.  All Rights reserved. 
 Linking is ALLOWED but COPYING any content or graphics to your web site is EXPRESSLY PROHIBITED.