Which is more efficient ...

[Low-Q]

[A author=DeepCut link=topic=9012.msg236559#msg236559 date=1270607919]
Hi.

I am still a noob and i have googled this but can't find the answer ...

Which is more efficient in an electric generator :

a) Rotating coils with static magnets.
b) Rotating magnets with static coils.


Thank you.
[/quote]Definitely B. When you have no sliding contacts/brushless the efficiency is better. In alternative A it will be a great loss in the brushes needed to harness the energy from the generator.

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[DeepCut]

Thank you

[Tito L. Oracion]

Hi.

I am still a noob and i have googled this but can't find the answer ...

Which is more efficient in an electric generator :

a) Rotating coils with static magnets.
b) Rotating magnets with static coils.


Thank you.

Actually it depends on how you make your designs, but it is more efficient if you include some tail on coils.