3B Scientific Demonstration Dynamo User Manual
3b scientific® physics
3B SCIENTIFIC® PHYSICS
3B Scientific GmbH • Rudorffweg 8 • 21031 Hamburg • Germany •
www.3bscientific.com
Subject to technical amendment
© Copyright 2008 3B Scientific GmbH
Experiment Equipment Dynamo U30066
Instruction Sheet
09/08 ALF
1 Magnet
2 LED
3 Coils
4 Base
plate
5 Hand-drive
pulley
1. Description
The experiment equipment dynamo is used to
demonstrate the conversion of mechanical energy into
electrical energy.
The motor is mounted on a base plate and coupled by
a rubber belt to a hand-drive pulley. External
connection is via 4 mm sockets with a light emitting
diode acting as an output indicator. The magnetic
field is provided by a removable permanent magnet.
2. Equipment supplied
1 Apparatus on base plate
1 Removable magnet
1 Stackable light emitting diode
1 Small dynamo pulley
3. Technical data
Base plate:
200 x 100 x 20 mm³
Hand-drive pulley:
150 mm dia.
Height: 180
mm
4. Operation
•
Put the magnet on top of the coils.
•
Attach the LED to the output sockets.
•
Turn the handle to induce a voltage, which will
light the LED. The faster the dynamo turns, the
brighter the LED.
The output can also be connected to a cathode ray
oscilloscope. If the time base is on a slow setting, and
the handle is turned slowly, then students will see the
dot moving up and down as it moves across the
screen. It will be immediately obvious that both the
amplitude and the frequency of the signal increase if
the coil is turned faster.