Here’s another version of the last project. This time
we use a NAND multivibrator and an R-S flip-flop
made with transistors.
This circuit works like the last one. When you set the
switch to B and press the key, you hear a sound in
the earphone. You can still hear the sound no matter
how many times you press the key again. Set the
switch to A and press the key and the sound will
stop.
Compare the operation of this project with the
previous one. What makes them different from each
other? Can you think of some situations where one
circuit might be better suited than the other? Be sure
to make some notes about what you learn.
Notes:
EXPERIMENT #56: SET/RESET BUZZER 2
-73-
Wiring Sequence:
o
13-49-42-45-138
o
14-119
o
81-32-41
o
33-59-60-62-36-121
o
44-35-51-84
o
40-133-83
o
82-43-131
o
50-77-109
o
54-53-52-75-78
o
132-137
o
110-76-57-56-55-EARPHONE
o
58-EARPHONE
o
13-14 (POWER)
Schematic
Summary of Contents for EP-130
Page 11: ... 11 I ENTERTAINMENT CIRCUITS ...
Page 26: ... 26 II BASIC SEMICONDUCTOR AND COMPONENTS CIRCUITS ...
Page 36: ... 36 III LED DIGITAL DISPLAY CIRCUITS ...
Page 41: ... 41 IV A TOUR THROUGH DIGITAL CIRCUITS ...
Page 49: ... 49 V MORE ADVENTURES WITH DIGITAL CIRCUITS ...
Page 64: ... 64 VI THE WORLD OF TRANSISTOR TRANSISTOR LOGIC ...
Page 77: ... 77 VII APPLICATION CIRCUITS BASED ON THE OSCILLATOR ...
Page 88: ... 88 VIII BASIC OPERATIONAL AMPLIFIER CIRCUITS ...
Page 116: ... 116 IX MORE ADVENTURES WITH OPERATIONAL AMPLIFIERS ...
Page 129: ... 129 X COMMUNICATION CIRCUITS ...