Elenco Circuit Maker Skill Builder 125 - Manual (Page 56)

Project #111 Light the Motor
Project #112 Motor Space Sounds Project #113
Twist &
Blink
!
WARNING: Moving parts. Do not touch the fan or
motor during operation.
-55-
This circuit combines Projects #1, #2, and #10 into one circuit.
Build the circuit and place the fan on the motor (M1). Depending on
which of the switches (S1 and S2) are on, you can turn on either the
lamp (L1) (Project #1), the motor (M1) (Project #2), or both together
(Project #10).
Turn it on and wait for any
sounds to stop. Then, spin
the motor (M1) and the
sounds play again.
Do you know why turning the
motor makes the sound play?
Actually, the DC motor is also
a DC generator and when
you turn it, the motor
generates a voltage that
triggers the sound circuits.
This circuit is loud and may bother
other people around you so
replace the speaker (SP) with the
LED (D1), (position it like in Project
#89); the circuit operates in the
same manner but now the LED
flashes instead of the speaker
making sounds.
CM-125_Manual_031514.qxp_CM-125_Manual_031514 4/2/14 12:20 PM Page 56