Data Sheet
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49. Uses of Motors
Build the circuit shown on the left, turn on the switch (62) and the
heart LED (69) and star LED (70) will light, but the motor (95) does
not spin. The heart LED (69) in series with the motor (95) is limiting
the current path through the motor (95) which is why it does not spin.
If you look around your house you’ll see that motors are used for many
things. Fans, blenders, and sink dispose-all are just a few. Can you think
of more?
50. History of LEDs
Build the circuit shown on the left and you see the heart LED (69) light,
but the motor (95) does not spin and the lamp (76) does not light. The
lighting industries as a whole are pushing LEDs to replace incandescent
sources in a variety of applications, but the rst time that LEDs actually
did displace incandescent lamps was in vehicle brake lights, signal
lights, and trafc lights back in 1987.
1st level