Loading ...
Loading ...
Loading ...
33
Project #76
Blow Off a Space War
OBJECTIVE: To turn off a circuit by blowing on it.
Project #77
Series Lamps
OBJECTIVE: To compare types of circuits.
Turn on the slide
switch (S1) and both
lamps (L1 & L2) will
light. If one of the
bulbs is broken then
neither will be on,
because the lamps are
in series. An example
of this is the strings of
small Christmas lights;
if one bulb is damaged
then the entire string
does not work.
Project #78
Parallel Lamps
OBJECTIVE: To compare types of circuits.
Build the circuit and turn it on, you hear a space war. Since it is loud and
annoying, try to shut it off by blowing into the microphone (X1). Blowing
hard into the microphone stops the sound, and then it starts again.
Turn on the slide switch
(S1) and both lamps (L1
& L2) will
light
. If one of
the bulbs is broken then
the other will still be on,
because the lamps are
in parallel. An example
of this is most of the
lights in your house;
if a bulb is broken on
one lamp then the other
lamps are not affected.
Loading ...
Loading ...
Loading ...