Making an AC generator problem?
I am trying to make a small AC generator, i so far have wound coils and got magnets ( good neodynium ones ) and been able to make about 1.5V by arranging a stack of disc magnets and dipping the stack in and out of the wound coil.
I tried waving the magnets back and forth just over the coils and only managed 0.01V ( i want this way for a desing in mind ) can anyone tell me why the voltage is so low and any way to improve?
Thanks
Answer:
Look at designs for home built wind generators. There are some very interesting designs which could give you ideas.
http://www.scoraigwind.com/
http://windstuffnow.com/main/alt_from_sc...
you have to put the magnet inside the coil, and not over it to get good voltage.
Look at this animation
http://sun.ylojarvi.fi/java/pos/ganimaat...
You will see that
a) You need a lot of windings just to create 2 Volts
b) Look at the direction of the windings (the bobbin): The axis of the coil must point towards the magnets.
c) Also, I believe, the 2 magnets should be connected with a piece of iron, so that you have a minimum of "air" within the magnetic circuit..
d) Coils must pass the (open) magnetic poles as close as possible.
The answers post by the user, for information only, FunQA.com does not guarantee the right.
More Questions and Answers: