Department of Physics and Astronomy PHYS420: Physics Demonstration. THIS IS SOMETHING WE SEE AND USE EVERYDAY!. University of British Columbia Presenter: Eric Yeh. What are we doing today?. We are going to learn the basic functions, principles, and applications of an electric motor.
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Department of Physics and Astronomy
PHYS420: Physics Demonstration
THIS IS SOMETHING WE SEE AND USE EVERYDAY!
University of British Columbia
Presenter: Eric Yeh
A rotating machine that converts electrical power (either alternating current or direct current) into mechanical power.
Is this definition very satisfying?
There are couple main principles behind a working DC Motor.
In simple terms, they are:
Starting about 8 cm from the end of the wire, wrap it 7 times around the battery provided.
Cut the wire, leaving a 8 cm tail opposite the original starting point.
Wrap the two tails around the coil so that the coil is held together and the two tails extend perpendicular to the coil.
On one tail, use fine sandpaper to completely remove the insulation from the wire.
Leave about 0.5 cm of insulation on the end where the wire meets to coil. On the other tail, lay the coil down flat and lightly sand off the insulation from the top half of the wire only.
Again, leave 0.5 cm of full insulation on the end and where the wire meets the coil.