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Electric Motors. Mastercraft 14.4 V Cordless Reciprocating Saw Travis Ricard. Objective. To outline and provide relevant information on the following The Various Components of an Electric Motor How an Electric Motor Works Function Within The Reciprocating Saw.

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Electric Motors


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    1. Electric Motors Mastercraft 14.4 V Cordless Reciprocating Saw Travis Ricard

    2. Objective To outline and provide relevant information on the following • The Various Components of an Electric Motor • How an Electric Motor Works • Function Within The Reciprocating Saw

    3. What Are The Components of An Electric Motor • Axle • Commutator • Armature • Field Magnet • DC Power Supply

    4. Axle, Armature and Commutator • The axle contains the armature and commutator • The armature consists of a set of electromagnets • An electromagnet is a set of thin metal plates stacked together. • Thin copper wire is coiled around each of the plates • Each end of the wire is soldered onto the plate and then wired to the commutator. • The commutator is a pair of plates attached to the axle. • These plates provide the two connections for the coil of the electromagnet. http://electronics.howstuffworks.com/motor5.htm

    5. Field Magnet • Consists of the motor housing and two curved permanent magnets http://electronics.howstuffworks.com/motor4.htm

    6. How Does An Electric Motor Work • A battery is used to magnetize the coils. • Creates a magnetic field traveling north to south outside the coil • North end of the coil is attracted the south end of the magnet • Vice-versa for the south end of the coil • This attraction causes the axel to make half a rotation http://electronics.howstuffworks.com/motor4.htm

    7. In an electric motor the armature takes the place of the nail • As the armature passes through the horizontal position, the current flips. • The magnetic dipole is flipped, which is caused by a reverse in electron flow • The commutator causes the reverse of electron flow • The process continues indefinitely http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/motdc.html#c2

    8. Function Within The Reciprocating Saw • The electric motor converts the power of the battery into mechanical energy • The motor does work to create rotational motion • The rotational motion is transferred into linear motion to be used for the tool’s primary purpose.

    9. Conclusion • The information presented in this presentation is a brief outline of the main ideas regarding the main role of the electric motor in the Mastercraft 14.4 V Cordless Reciprocating Saw

    10. References Refer to the below links for further information • http://electronics.howstuffworks.com/motor4.htm • http://www.phys.unsw.edu.au/hsc/electric_motors4.html • http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/motdc.html#c2