Elenco Green Projects - Manual (Page 48)

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Project #70
Place the water wheel on the motor (M4)
and connect it to the meter (M6), as shown.
Set the meter to the 5V or 50mA setting.
Hold the motor under a water faucet so the
water wheel will “catch” the water as it falls.
See how much voltage and current you can
produce.
Using the water pressure from your faucet
to make electricity using the motor (used as
a generator here) is just like using water
pressure from a lake to run an electric
generator in a dam.
Your parts might stop working if water gets
inside them. Let them dry out and they
should be fine.
Changing Water Pressure to
Electrical Pressure
Hoover Dam has a lake
that is 500 feet deep on
one side to provide great
pressure to turn the
generators that make our
electricity.
5V
on motor shaft
50mA
+
FM Radio Project #71
Earphone
plug
Reset button
Scan
button Volume-on/off knob
Note: Radio style and features may vary.
1
Insert
eliminator
Slide
eliminator
into position 2
INSTALLING BATTERY ELIMINATOR
Install the battery eliminator connector into the battery compartment in
the FM radio, as shown. Connect the red and black snap wires to the
battery (B4). Plug the earphones into the radio and place the earphones
in your ears. Turn the volume knob clockwise to turn on the radio, press
the reset button, then press the scan button several times to find a radio
station (radio features may vary).
Listen to the radio for a while. If the sound is distorted, then recharge the
battery using the solar cell or other power sources in this kit.
With Snap Circuits ® Green, you can run your radio with the limitless and
clean power from the solar cell, using the battery as a storage device.
Your radio can also be used with normal “AAA” type batteries, but these
would need to be replaced regularly.
Radio is sending messages through the air using high
frequency electromagnetic waves. It is like yelling to
someone far away, but uses very fast changes in
electric/magnetic fields instead of slow changes in air
pressure and using a tone that only someone tuned to
it can hear.
See projects 1 & 3 if you need to recharge the battery (B4).