Elenco Electronics 202 - Manual (Page 112)

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Project #261
OBJECTIVE: To show how electricity can move things using
magnetism.
Siren Paper Clip Vibrator
Take a paper clip and straighten it out, bend it in
half, and place it into the electromagnet (M3)
center. Turn on the slide switch (S1), and the
paper clip should vibrate.
Now press the press switch (S2), the paper clip is
suspended in the air by the electromagnet and a
siren alarm sounds.
Drop in
Straighten and
bend paper clip
Project #262
Alarm
Paper Clip Vibrator
OBJECTIVE: To show how electricity can move things using
magnetism. OBJECTIVE: To show how electricity can move things using
magnetism.
Project #263
Machine Gun
Paper Clip Vibrator
Use the circuit from project #261, remove the connection between points
A & B and make a connection between points B & C (using a spacer on
point B). The sound and vibration are different now. Compare the
vibration height and frequency to project #261. Now remove the connection between points B & C and make a
connection between points D & E. The sound and vibration are different
now. Compare the vibration height and frequency to projects #261 and
#262.