Idiomas disponibles
Idiomas disponibles
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circuit with small lamp
The small lamp is connected to the battery, as indicated in the
illustration. Do not put both wires of the small lamp into the
same terminal of the lustre terminal! Each wire has to be fitted
into an individual terminal! The two bare wires of the small
lamp must not touch each other! If everything has been done
correctly, the lamp should light up. Instead of the lamp, you
may also connect the electric motor.
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antenna
radiotransmitter system marconi
Set up a simple circuit with motor and battery. In addition, a
short antenna wire of approximately 25 cm length is connected.
Whenever the running motor is placed directly beside a radio,
you will hear on long-wave or medium-wave ranges in a distance
of approx. 1 - 2 m to the motor a loud crackling. It has to be
adjusted so that no radio broadcasting can be received. With
a longer antenna wire (over 5 meters) it is feasible to achieve
greater ranges. In case the current is briefly interrupted several
times, it is possible to send a Morse code into a room nearby.
The transmitting signal is produced by the break spark in the
motor.
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test of conductivity of water
Water may conduct current, if it is chemically polluted. Take
a glass of water and add 1 tablespoon of salt. If now both
bare wire ends are held into the water simultaneously, the
compass-ampere meter will indicate the flow of current. Also
the small lamp could glow, if the conductivity of the water
is very high.
General instructions:
For this construction kit you will also need a 4.5 V - flat bat-
tery, a small screwdriver for the lustre terminals, one glass of
water, one tablespoon of salt. The connection to the battery
is achieved by removing the insulation of two cables about
3 cm at each end and wrapping these bare wire ends firm-
ly around the connecting pins of the battery. The wire ends
must necessarily be bare, do not wrap the insulation of the
cable around the connecting pins. Otherwise there won't be
electrical contact and the experiments won't work! Further-
more, you must make sure that the battery is charged!
The wire ends, which touch the screws in the lustre termi-
nals, need to have the insulation removed! Don't screw on
the insulation! Please do not tighten the screws too firmly,
because otherwise the cable may get damaged and could
break off! Each wire of the small lamp has to be fitted into
an individual terminal of the lustre terminal, make sure that
the screw fastens the wire firmly (in order to test that the wire
3/8
GB
2
electromagnetism
Wrap the thin 50 cm long cable with approx. 30 turns around
the silver zinc nail and connect it short to the battery. The cur-
rent flow has the effect that the nail becomes magnetic and
will attract smaller iron parts like e.g. paper clips or pins. The
experiment should only be made for a short time (max. 10
seconds), because otherwise the battery runs down quickly
due to the high power consumption.
5
Generator
When the motor axis is turned by hand, the motor produces
current. The compass with the coil is set up as in experiment
3 with freely swinging needle and the needle aligned along the
coil. Wiring is done according to the illustration. Depending on
the motor rotation, current is generated and the needle turns to
the left or right side. If the motor is equipped with a wind wheel
and achieves a very high speed, it could possibly light up a small
lamp.
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longer wire
light emitting diode (led)
When connecting a light emitting diode make sure the pola-
rity is correct (the longer lead of the component connects to
the positive pole of the battery. If it is connected the other
way round, the LED will not light up.) In addition, normal light
emitting diodes require a resistor that reduces the current
consumption. The resistor has already been installed firmly
in the included light emitting diode. Compared to other lamps
LEDs distinguish themselves by a much longer life span and
a lower power consumption. The LED lights up if it is connected
according to the illustration.
is firmly secured, pull carefully on the wire of the small lamp,
the wire should not be loose).
Safety instructions for B172
These operating instructions belong to this product. They
contain important instructions for operation and handling.
Please keep this in mind when passing the product on to
another person. If this kit is used by children under 14 years
of age, a competent adult must be present (the kit has no CE
approval as children's toys).
Never expose this kit to high temperatures or strong vibra-
tions. The commissioning must be carried out by suitably
qualified personnel to ensure that a safe operation of this
product is guaranteed. The operating voltage may only be
drawn from a battery or power supply unit tested for safety.
The regulations for prevention of accidents for electrical ins-
current proof through a compass
First the enclosed coil is placed over the compass, so that the
needle aligns along the coil. There should not be any iron parts,
magnets or electrical devices nearby! Put some cardboard or 2
pieces of wood under the compass, so that it lies straight on the
surface and the needle can turn freely! If you connect the bat-
tery now, the lamp will light up and the needle aligns crosswise
to the coil! When the current is turned off, the compass needle
turns north again (along the coil). The needle is magnetically
attracted by the current-carrying coil.
Selfmade battery
In order to build a weak, simple battery by yourself, fill a glass
with water and add 1 tablespoon of salt. The zinc nail and the
copper board have to be immersed into the water so that they
will not touch each other. If we now connect the compass-ampe-
re meter, the needle moves, indicating the existence of current.
The compass is set up as in experiment 3, so that the needle will
swing freely along the coil when no current is flowing.
short connection
LED experiment
Because the light emitting diode already lights up at very low
currents (>3 mA), it is also possible to supply it with enough
current through the rotation of the motor. When turning the in-
cluded electric motor quickly with the fingers (with a lot of mo-
mentum like a toy spinning top, so that the motor axis rotates
quickly), the LED briefly lights up (as long as the motor is still
rotating quickly). Important: Please try the running direction in
which you rotate the motor axis. The LED lights up only in one
of the running directions, because the polarity must be correct!
tallations and operating material of the industrial employer's
liability insurance association are to be observed in industrial
facilities. In schools, training centers, clubs and do-it-yourself
workshops, the operation of this device is to be supervised
responsibly by trained personnel. Never place the device clo-
se to combustible or inflammable materials (e.g. curtains).
we do not assume any liability for damage to property or
personal injury caused by non-compliance with the opera-
ting instructions and these safety instructions as well as
for its consequential damage.
P / Bausätze / B172 / Beschreibung / 22028OM / KV003 / Einl. Ver. 001
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