Category Archives: ferrite magnets

Video of Scoraig Workshop 2012

Posted on 30/12/2012 by admin

Jonathan Schreiber sent me this video he made about when he came to my workshop last year.  Somehow he also manages to be in the video too Jonathan also has a blog here. I will be teaching at more workshops … Continue reading →

Posted in construction, courses, ferrite magnets, People, Video links | 4 Comments

Workshop in Leitrim with Eirbyte

Posted on 26/06/2012 by admin

Here are some photos and a video of the workshop.  We built a 4200 recipe machine with 48-V battery charging output and a new design of 2 metre, 24-V turbine with ferrite magnets.  

Posted in construction, courses, ferrite magnets, Video links | 9 Comments

Willie Schmidt

Posted on 10/06/2012 by admin

Willie Schmidt is building a 3 metre ferrite turbine in South Africa 12 ferrite magnets 75 x 50 mm (3 x 2 inches) 440 mm rotor diameter disk 250 turns (2 x 0.8mm dia wire) for a 36 volt battery … Continue reading →

Posted in construction, ferrite magnets, People | 4 Comments

Clearer drawing of the 10-pole 12 coil design

Posted on 26/05/2012 by admin

Coils wound in pairs using 2-in-hand 1.6mm diameter wire.  Each coil has 37 turns in the one we did for the workshop. Coils in each pair are roughly ‘in phase’ if one is flipped over as shown.  (Actually there is … Continue reading →

Posted in construction, ferrite magnets, my own projects | 34 Comments

Photos of the Scoraig wind turbine building workshop

Posted on 12/05/2012 by admin

Participants: 6 (Robert, Jonathan, Kostas, Benji, Yanti and Kern) Dates: 5-12 May 2012  Location: Scoraig. Project: 3 metre machine using ferrite/ceramic magnets at 24VDC Poles: 10, (3 magnet blocks 50 x 50 x 20 per pole) Coils: 12 (37 turns … Continue reading →

Posted in construction, courses, ferrite magnets, my own projects, Scoraig | 14 Comments

Chain driven turbine with Classic controller

Posted on 29/12/2011 by admin

Chris Olsen’s latest project involves a Classic 150 controller connected to an alternator that is gear driven from 3.2m diameter blades.  The gear ratio is 1:2.5 up ratio. It’s a single-stator with 3-phase star connected windings this time.  The ferrite … Continue reading →

Posted in construction, ferrite magnets | 5 Comments

Bruno’s blades

Posted on 02/10/2011 by admin

I got this email from Bruno with some lovely photos of his blades made from birch plywood.  I am not sure that plywood is the best thing to use for blades (where the stresses are longitudinal) but it seems to … Continue reading →

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Price of Neodymium finally levels off

Posted on 16/09/2011 by admin

There’s an interesting article here about the situation with global supply of neodymium magnets.  Price of Neodymium (Nd) has increased roughly tenfold in two years, but shows signs of leveling in recent weeks. Thanks to Markus Hugentobler for sending me … Continue reading →

Posted in construction, developing world, ferrite magnets | 3 Comments

My first ferrite magnet project

Posted on 28/08/2011 by admin

Back in the 1980s I had spent ten years building wind turbines that were based on dynamos (USA=’generators’) out of military jeeps.  They were cheap and well made, but they had serious drawbacks.  The magnetism required to make them work … Continue reading →

Posted in construction, ferrite magnets, my own projects, wind systems tutorial | Leave a comment

“Yet another axial” down under

Posted on 25/08/2011 by admin

Another ferrite magnet alternator project.  This one is on the Backshed discussion board hosted by Glenn ‘Gizmo’. The stator is supported at the centre, which is a bit more compact but the supporting bolts between magnet rotors restrict the overall … Continue reading →

Posted in construction, ferrite magnets, People | Leave a comment