With this assembly and the running steam engine you can continue to
explore more experiments, like f. ex.:
Disconnect for a short time the red crocodile clip next to the diode
from the pin, wait and then connect again.
Plug in another electrolytic 4700µF parallel to the first one. The
LED stops flashing shortly after the electrolytic has been plugged
in. After a while the LED flashes again. The reason is that the
additional electrolytic first needed to be charged.
Fig.3.54: plug in an additional
electrolytic, underneath of the
second electrolytic we find the
series resistor of the flash LED,
in the lower part of the picture
on the left side
Fig.3.55: circuit diagram with charge indicator and two electrolytic
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