Data Sheet

-20-
7. Proximity Sensor
Build the circuit on the left, then move the magnet (7) near
the reed switch (83) and the motor (95) will turn on. Move the
magnet (7) away and the motor (95) will turn off. Proximity
sensing like this is often used to control things like blow drying
your car in a car wash.
8. Newton’s First Law of Motion
Build the circuit on the left, press and hold the press switch
(61) and the fan (60) will start spinning. Release the press
switch (61), the fan will slow down and nally stop due to
friction in the motor (95). This demonstrates Newton’s First
Law of Motion: An object either remains at rest or continues
to move at a constant velocity, unless acted upon by a force.
WARNING: Moving parts. Do not touch
the fan or motor during operation. Do
not lean over the motor.
!
WARNING: Moving parts. Do not touch
the fan or motor during operation. Do
not lean over the motor.
!