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High School Science Project: DC Motor Construction
Copyright © 2004 Francis J. Martino

Hello

For a school project in grade 11 I need to build a small DC motor with a armature...I was wondering
if you could send me information on how to do this in the best possible way.

It would be wonderful if you could send me a diagram of a DC motor with a armature, and explain
what materials are needed to build it so I may do so. What each part does.

Thanks a bunch Elisa

Dear Elisa,

Basic construction of a DC motor is given here: DC Motor Construction 

You will find brushless DC motors as you search the internet, however, you will need to build a
motor that requires brushes. The field (permanent magnet or electromagnet) supplies a magnetic
field through which the armature conductors rotate. As the conductors rotate through the field,
an AC current is induced in the conductors. Refer to Lenz's Law.

The armature has a commutator segment attached to each armature coil. The commutator and
brushes allow the current to be changed from AC to DC by the mechanical construction.

Best Regards, Frank

For more basic electrical principles:  Electrical Principals

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