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Using CoolJunk KIT-1 students can set up their personal lab at home, learn hands on electronics and can perform fun-to-do experiments sitting at home.
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3. Do
you
know
how
the
industrial
boilers
work?
The
boiler
circuit
will
acBvate
a
warning
lamp
if
either
its
water
sensor
or
its
gas
sensor
detects
a
low
level.
The
NAND
gates
will
help
you
infer
its
working;
it
has
two
inputs
(A
and
B)
and
only
one
output
(Q).
In
this
project,
you
will
make
a
NAND
gate
logic
circuit
using
two
diodes,
three
resistors,
an
LED
and
a
few
connecBng
wires.
Contrary
to
the
NOR-‐gate,
in
this
case
the
p-‐sides
of
the
two
diodes
are
connected
to
each
other
and
at
the
same
potenBal.
Two
connecBng
wires
are
connected
to
the
n-‐sides
of
the
diodes.
Each
connecBng
wire
represents
the
input.
This
input
could
be
either
1
or
0,
where
1
stands
for
Vcc
(posiBve/high
voltage)
and
0
stands
for
ground
(negaBve/low
voltage).
To
provide
the
inputs;
the
truth
table
of
the
NAND-‐
gate
was
followed.
Input
A Input
B Output
Q
0 0 1
0 1 1
1 0 1
1 1 0
On
providing
the
inputs,
if
the
LED
glows
this
means
output
Q
=
1
or
high.
If
the
LED
does
not
glow,
the
output
Q
=
0
or
low.
AVer
verifying
the
experimental
outputs
in
four
different
cases
of
the
inputs,
we
do
the
‘path
of
current’
analysis
and
reason
out
why
the
LED
glows
in
each
case.
4. Have
a
look
at
our
Project
Kit!
CoolJunk
is
India's
fastest
growing
DIY
(do-‐it-‐yourself)
kits
company
focused
on
project-‐based
learning
in
science,
engineering
and
technology.
Having
20,000
users
in
India,
US,
Singapore,
Middle
East
and
New
Zealand,
the
CoolJunk
kits
are
known
for
quality,
innovaBon
and
high
producBon
value.
CoolJunk
has
been
featured
in
naBonal
and
internaBonal
journals
including
Wallstreet,
Yourstory,
Hindu
Business
Line,
NextBigWhat
and
was
tagged
as
the
coolest
Indian
start-‐up
in
IAN
Bootcamp-‐2011.
You
may
also
refer
to
the
video:
NAND
GATE
For
more
projects
visit
our
website:
CoolJunk
Tools
and
Components
in
one
box.
Step
by
step
visual
instrucBons
Detailed
experiment
theory
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