Do you think you have good night vision? This last
project in this section is a game that lets you find out
how well you can see in the dark. It tests your aim –
in a completely dark room!
After you finish building the project, put it in as dark
a room as possible. Slide the switch position A and
adjust the control in a counter-clockwise direction
until LED 1 and LED 3 light. Now you’re ready to test
your skill.
Your “gun” for this game is any ordinary flashlight.
You use your flashlight to “shoot” the kit with a beam
of light. If you aim correctly, you’ll hit the CdS cell to
light LED 2 and turn off LED 1 and LED 3. Then turn
off your flashlight and wait until LED 2 goes off
before you try the next shot.
First try hitting the CdS cell from about five feet or
so. As your aim improves try increasing the
distance. When you are really good, you can try
hitting the CdS cell simply by switching your
flashlight on and off rather than using a continuous
stream of light.
You might have to adjust the control knob very
carefully to have LED 2 come on when light strikes
the CdS cell. For the best results, be sure you have
the kit in a completely dark room and use a sharply
focused flashlight (not a fluorescent lamp or other
light). Once you’ve found the best setting, keep it
there so you can use it again. Don’t change it until
you want to stop using the “shot in the dark” game.
Good luck and may you become “the fastest
flashlight in the West!”
Notes:
EXPERIMENT #59: SHOT IN THE DARK
Wiring Sequence:
o
15-34-49-50-51-37-42-131
o
16-28
o
48-121-26-88-74-62-60-59-57-56-33
o
27-81
o
31-41
o
32-54-85
o
35-45
o
73-44
o
39-55-116
o
40-115-87
o
43-86
o
46-82
o
47-53
o
119-132
-76-
Schematic
Содержание EP-130
Страница 11: ... 11 I ENTERTAINMENT CIRCUITS ...
Страница 26: ... 26 II BASIC SEMICONDUCTOR AND COMPONENTS CIRCUITS ...
Страница 36: ... 36 III LED DIGITAL DISPLAY CIRCUITS ...
Страница 41: ... 41 IV A TOUR THROUGH DIGITAL CIRCUITS ...
Страница 49: ... 49 V MORE ADVENTURES WITH DIGITAL CIRCUITS ...
Страница 64: ... 64 VI THE WORLD OF TRANSISTOR TRANSISTOR LOGIC ...
Страница 77: ... 77 VII APPLICATION CIRCUITS BASED ON THE OSCILLATOR ...
Страница 88: ... 88 VIII BASIC OPERATIONAL AMPLIFIER CIRCUITS ...
Страница 116: ... 116 IX MORE ADVENTURES WITH OPERATIONAL AMPLIFIERS ...
Страница 129: ... 129 X COMMUNICATION CIRCUITS ...
Страница 136: ... 136 XI TESTING AND MEASURING CIRCUITS ...