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3. Technical data
Operating modes:
Nominal voltage of
motor:
No-load voltage
In generator mode
Base plate:
Weight including magnet 0.85kg approx.
4. Additionally required equipment
1 ESCOLA 10 multimeter
or
1 USB oscilloscope 2x50 MHz
1 DC power supply, 20 V, 5 A (@115 V) 1003311
or
1 DC power supply, 20 V, 5 A (@230 V) 1003312
Experiment leads
5. Operation
•
Place the horseshoe magnet on the base
plate in such a way that the armature coil is
between its two poles.
•
Attach the yoke to the back of the magnet in
order to reduce the magnetic field.
Fig. 1 Horseshoe magnet with yoke
5.1 Configuration as DC motor
•
Insert the current collectors into the right-
hand pair of sockets of the terminal panel on
the base plate (see Fig. 2).
•
Spread out the carbon brushes slightly and
guide them over the disc.
DC motor,
DC and AC generators
9 V
2.5 V
130 x 150 mm²
1006810
1017264
•
Push the current collectors onto the base
plate as far as they will go (without bending
the carbon brushes).
•
Take the drive ring off the drive pulley (for
easy starting).
•
Plug the power supply into the sockets.
•
Supply the motor with no more than 12 V.
It is necessary to give the rotor a push to get it
started from its initial position (armature coil
vertical).
No voltage may be applied to the motor while it
is stationary (start the motor turning first).
5.2 Configuration as generator
•
Thread the drive ring over the armature
shaft and drive pulley and use the crank to
turn the armature shaft.
•
Connect the multimeter to the connector
sockets. Observe how far the needle moves.
5.2.1 DC generator
•
Insert the current collectors into the right-
hand pair of sockets of the terminal panel on
the base plate (see Fig. 3).
It is possible to tap a DC (pulsating DC) voltage
across the commutator (see Fig. 4).
5.2.1 AC generator
•
Insert the current collectors into the left-hand
pair of sockets of the terminal panel on the
base plate (see Fig. 5).
It is possible to tap an AC voltage closely re-
sembling a sine wave across the slip ring (see
Fig. 6).
6. Storage, cleaning, disposal
•
Keep the equipment in a clean, dry and dust
free place.
•
Do not clean the unit with volatile solvents or
abrasive cleaners.
•
Use a soft, damp cloth to clean it.
•
The packaging should be disposed of at
local recycling points.
•
Should you need to dis-
pose of the equipment it-
self, never throw it away
in
normal
waste. Local regulations
for the disposal of electri-
cal equipment will apply.
2
domestic
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