Manual

-76-
H
ere’s a variant of the last project. This time we use
an R-S flip-flop made with transistors and a NAND
multivibrator.
You will hear a sound in the earphone when you set
the switch to B and press the key. No matter how
many times you press the key you can still hear the
sound. The sound will stop when you set the switch
to A and press the key.
Compare the operation of this experiment with the
last one. What makes them independent from each
other? Are you able to think of some situations
where one circuit might be better suited than the
other? Be sure to make some notes about what you
are learning.
N
otes:
EXPERIMENT #59: ANOTHER SET/RESET BUZZER
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 58-87
o 88-EARPHONE
o 13-14 (POWER)
Schematic
EP-130_62315RevC.qxp_EP-130_062812 6/23/15 11:17 AM Page 76