ELECTRICITY AND MAGNETISM - ELECTROMAGNETIC INDUCTION - MOTORS AND GENERATORS NC State University Faculty Access

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Motor and Generator Demonstration Model
# 5K40.10


Description: The components of the model are mounted in a rectangular steel frame about 38cm high and 48cm wide. The main components of the model are two field coils, two armature coils, and a commutator.

All coils are of the samesize and are wound with insulated copper wire. To help the student distinquish between the north and south magnetic poles, one field coil and one armature coil are painted blue, the other two coils are painted orange.

The armature, well-balanced on the frame, is mounted between low-friction bearings at the base and thus revolves smoothly. The model can be operated on less than 6VDC. A 6V latern battery or three or four 1.5V batteries connected in series are sufficient for any operation, although any 6VDC power supply will work.

Purchased/Built: purchased

Setup Time: 1 hour

Quant. in Demo Room: 1

Source: Central Scientific

Demo References
Sutton E-146 A coil in a "U" shaped magnet with a simple commutator.
The Video Encyclopedia of Physics Demonstrations Disc 20-09 A large model DC motor.
Sutton E-147 A circular loop of heavy wire between two solenoids with iron cores.
Freier and Anderson Ei-19 A large open coil is mounted between the poles of magnetron magnets to make a DC motor.

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