Manual

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We’ve been constructing tones with audio
oscillators for so long that it might seem as if there’s
no other way to produce tones from electronic
circuits. Multivibrators made from NAND gates do
the job just as well.
Connect the earphone to terminals 13 and 14 and
set the switch to A to turn on the power once you
finish wiring this circuit. A tone produced from the
multivibrator will be what you hear. Change the
value of the capacitors from 0.1mF to 0.5mF. What
effect does this have on the sound?
Try using different capacitors within this experiment.
Don’t try using any of the electrolytic capacitors,
(terminals 111-118). To vary the tone, try to arrange
the circuit so you can switch different value
capacitors in and out of this circuit.
Notes:
EXPERIMENT #51: TONE GENERATOR USING TTL
Wiring Sequence:
o 49-131
o 50-51-77-109
o 52-53-54-60-59-75-78
o 55-57-56-76-110
o 62-121
o 119-132
o 58-87
o 88-13-EARPHONE
o 61-14-EARPHONE
Schematic
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