Conrad Course material 10025 14 years and over 10025 Manual De Usuario
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10025
Depending on the light shining on the solar module, the LED flashes more or less brightly. With little
incidence of light, the flashing can barely be seen. Now insert the electrolytic capacitor as well. At first,
the LED no longer flashes for some time, but also more brightly with little light.
Additional experiment: Insert another LED, e.g., the red one, instead of the series resistor in series to
the flashing LED. Now you suddenly have two flashing LEDs.
Fig. 24a: Circuit diagram: flashing LED and red LED in series connection
Fig. 24b: Patch panel set-up: flashing LED and red LED in series connection
incidence of light, the flashing can barely be seen. Now insert the electrolytic capacitor as well. At first,
the LED no longer flashes for some time, but also more brightly with little light.
Additional experiment: Insert another LED, e.g., the red one, instead of the series resistor in series to
the flashing LED. Now you suddenly have two flashing LEDs.
Fig. 24a: Circuit diagram: flashing LED and red LED in series connection
Fig. 24b: Patch panel set-up: flashing LED and red LED in series connection
7.
Step: Solar power – high energy?
Experimental set-up: Solar module, patch panel, bright orange LED, 100 µF electrolytic capacitor,
4,700 µF electrolytic capacitor
4,700 µF electrolytic capacitor
This experiment also works with little light (cloudy sky); the charging times are shortened
with a strong light source.
with a strong light source.
The LED solar flashing light can be set up with the simplest means. Depending on the light available,
when pressing the switch-key the LED produces a bright flashing light after a charging time of a few
seconds.
Fig. 25: Set-up of the LED solar flashing light
You can make the switch-key yourself from the wire included.
Fig. 26: Wire switch or switch-key from the hook-up wire of the educational kit
Fig. 27: Circuit diagram: solar flashing light, alternatively with the small and the larger electrolytic
capacitor
First experiment with the small 100 μF electrolytic capacitor and replace it in the second experiment
with the larger 4,700 µF electrolytic capacitor. Due to the low voltage, the flash energy amounts to only
about two mWs. A relatively small charging current is required, which the solar module can supply
without any problem. Depending on the light source, the electrolytic capacitor is sufficiently charged
after a few seconds. Now cover the solar module and afterward briefly press the switch-key. The LEDs
flash briefly. Only a little residual brightness remains if low current continues to be supplied through
the solar module.
8.
Step: Preparing the solar drive
Experimental set-up: 1 solar motor, patch panel, pin contact strip, disc
As with the solar module, the connection lines of the motor are made of flex. Connect the black and
the red cable to the patch panel. It is recommended that the black connection be inserted in the lower
bar and the red connection (+) be inserted into a contact in the row of five, as shown in Fig. 28.
Fig. 28: The connection lines of the solar motor (flex ends) can also be directly inserted in the patch
panel, but pins can stabilise the connection.
In order to be able to tell whether the motor shaft is turning during the experiments, it makes sense to
mount the disc included on the motor shaft. For this, pre-drill a hole in the centre with a needle. Put the
cardboard disc on the axle of the motor.
Fig. 29: Preparing cardboard disc for mounting
Fig. 30: Cardboard disc mounted on motor axle: a) from above, b) from the side
As with the solar module, the connection lines of the motor are made of flex. Connect the black and
the red cable to the patch panel. It is recommended that the black connection be inserted in the lower
bar and the red connection (+) be inserted into a contact in the row of five, as shown in Fig. 28.
Fig. 28: The connection lines of the solar motor (flex ends) can also be directly inserted in the patch
panel, but pins can stabilise the connection.
In order to be able to tell whether the motor shaft is turning during the experiments, it makes sense to
mount the disc included on the motor shaft. For this, pre-drill a hole in the centre with a needle. Put the
cardboard disc on the axle of the motor.
Fig. 29: Preparing cardboard disc for mounting
Fig. 30: Cardboard disc mounted on motor axle: a) from above, b) from the side
9.
Step: Converting solar energy into motion
Experimental set-up: solar module, patch panel, motor with disc