Manual

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D
oes your home lack a grandfather clock? Well not
any longer, with this experiment you will make your
own electronic grandfather clock.
This circuit will produce clicks at approximately one-
second intervals. The sound and timing together
might remind you of an old grandfather clock. If you
would like for it to go faster or slower then you can
change out the 100kW resistor.
The steady ticking can put animals (and people) into
a sleepy state of mind. If you have ever traveled on
a train, you remember how sleepy you get from
hearing the clicking sound of the wheels.
Ever scare a clock out of ticking? Shout directly into
the speaker. You can briefly stop the clock! The
speaker acts like a microphone as well. The sound
of your voice vibrates the speaker and disturbs the
electrical balance of the circuit, briefly.
N
otes:
EXPERIMENT #4: GRANDFATHER CLOCK
Wiring Sequence:
o 1-29
o 2-30
o 3-104-116
o 4-90-120
o 5-41-103
o 40-72
o 42-119
o 71-89-115
Schematic
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