Elenco Snaptricity&reg - Manual (Page 63)

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Motor
Educational Corner:
How does electricity turn the shaft in the motor? The answer is
magnetism. The motor is the opposite of an electromagnet.
Moving a magnet near a coil of wire can make a current flow in it
(like the electromagnet), but a current flowing can move a magnet.
Inside the motor is a coil of wire mounted on a shaft. The motor
shell has a magnet on it. When electricity flows through the coil
of wire, it repels from the magnet on the motor shell and the shaft
spins. If the fan is on the motor shaft then its blades will create
airflow.
Project #53
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Magnet
Shaft
Power Contacts
Shell
To prove the motor
has a magnet
inside, move your
compass around it.
The red needle will
be attracted to one
side but repelled
from the other.
Electric Paths
Snappy says: the switches reverse the
direction of electric current through the
motor, changing the direction it spins.
But the lamps don’t care which way
electricity is flowing.
Motors are used throughout our society to convert electricity into
mechanical motion.
Description
Set the slide switches (S5) so that both are set to the same
position (B or C), and push the press switch (S2). The lamps (L4)
light and the fan spins.
Flip the slide switches to the other position and push the press
switch again. The lamps still light and the fan spins the other
direction.
Operation
Build the circuit as shown.
Assembly
Electromagnet
!
WARNING: Moving parts. Do not touch
the fan or motor during operation.
!
WARNING: Do not
lean over the motor.
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