Especially with the smaller steam engine models one can observe that the
rotational speed of the steam engine slows down and the white LED starts
to shine. The LED shines bright when the rotational speed has stabilized,
probably still with a little pulsating or flashing. Measuring the initial
voltage with an oscilloscope (a professional instrument to show the voltage
in a graphical diagram) would show us a wave, caused by the continuous
interruptions of the commutator of the generator.
One can use the mounting of the experiment and the running engine and
continue with more experiments to gain an improvement:
In the next experiment one can integrate an electrolytic capacitor, if you
wish to smooth the “wavy” voltage. Make sure that you connect the positive
(+) pole of the electrolytic with the red cable and the negative (-) pole with
the black cable onto the bread board.
Fig.3.38: first
plug in the
electrolytic with
1000µF onto the
bread board
respecting the
right polarity,
then alternatively
the electrolytic
with 4700µF
To Next Page
Loading...
