Are you a class 12 student looking for high quality Physics Investigatory Projects for your CBSE/ICSE assessments? Do you want to achieve high grades in your physics investigatory project, gain technical skills in electronics and develop a genuine interest in physics and engineering? Now you can with CoolJunk’s new and amazingly easy to use, innovative DIY (do-it-yourself) kit for electronics and electrical projects that are fully compliant with the CBSE/ICSE physics project curriculum requirements. Visit our website: http://www.cooljunk.in/physics-project-kits 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. For more information, visit our website: http://www.cooljunk.in

1. Part of Made in India,
Design Innovation
Workshop,2015
A
Fresh
New
Experience
in
Project-­‐Making
and
Learning

2. PHYSICSINVESTIGATORY
PROJECTON
ANDGATEUSINGTRANSISTORS

3. Do
you
know
how
the
garden
floodlights
work?
For
this,
one
needs
to
know
the
concept
of
an
AND
gate
using
diodes.
The
floodlights
contain
a
heat
sensor
as
well
as
a
dark
sensor.
The
floodlights
turn
ON
only
when
both
the
sensors
are
triggered
and
provide
a
high
input
voltage
(1)
to
the
AND
Gate.
A
2-­‐input
AND
gate
has
two
inputs
(A
and
B)
and
only
one
output
(Q).
In
this
project,
you
will
make
an
AND
gate
logic
circuit
using
two
transistors
(Q1
and
Q2),
four
resistors,
an
LED
and
a
few
connecQng
wires.
The
emiRer
of
Q1
is
connected
to
the
collector
of
Q2.
The
collector
of
Q1
is
connected
to
Vcc
(posiQve/high
voltage)
while
the
emiRer
of
Q2
is
connected
to
ground
(negaQve/low
voltage).
Two
connecQng
wires
are
connected
to
the
leU
leg
of
the
base
resistors.
Each
connecQng
wire
represents
the
input.
This
input
could
be
either
1
or
0,
where
1
stands
for
Vcc
and
0
stands
for
ground.
To
provide
the
inputs;
the
truth
table
of
the
AND-­‐gate
was
followed.
Input
A Input
B Output
Q
0 0 0
0 1 0
1 0 0
1 1 1
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.
AUer
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,
innovaQon
and
high
producQon
value.
CoolJunk
has
been
featured
in
naQonal
and
internaQonal
journals
including
Wallstreet,
Yourstory,
Hindu
Business
Line,
NextBigWhat
and
was
tagged
as
the
coolest
Indian
start-­‐up
in
IAN
Bootcamp-­‐2011.
For
more
projects
visit
our
website:
CoolJunk
Tools
and
Components
in
one
box.
Step
by
step
visual
instrucQons
Detailed
experiment
theory
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us
on: