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Idiomas disponibles
Idiomas disponibles
When set up as an AC generator (current collec-
tors reconnected on to the slip ring), it is possible
to obtain an output close to a sinusoidal voltage.
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).
DC motor,
DC and AC generators
9 V
2.5 V
130 x 150 mm²
1006810
1017264
Spread out the carbon brushes slightly and
guide them over the disc.
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 ver-
tical).
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 resem-
bling 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 domestic waste.
Local regulations for the
disposal
of
equipment will apply.
2
electrical
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