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
&
Learning!

2. PHYSICSINVESTIGATORY
PROJECTON
FUNCTIONINGOFDIODEANDITS
V-ICHARACTERISTICS

3. Do
you
know
how
mul,purpose
an
ordinary
p-­‐n
junc,on
diode
is?
It
is
used
for
power
rec,fica,on
(changing
AC
into
DC),
as
an
electrical
switch,
and
surge
protec,on
etc.
You
can
test
out
its
func,oning
in
forward
and
reverse-­‐bias
modes,
measure
its
forward
bias
voltage
and
vary
current
through
it
to
study
V-­‐I
characteris,cs.
This
project
is
divided
into
two
phases.
In
the
first
phase,
you
will
need
a
diode,
an
LED,
a
resistor
and
a
few
connec,ng
wires.
The
black
side
of
the
diode
represents
its
p-­‐side
and
its
silver
stripe
is
the
n-­‐side.
The
connec,ons
were
made
such
that
the
n-­‐side
of
the
diode
was
connected
to
the
posi,ve
terminal
of
the
LED.
AJer
the
comple,on
of
the
circuit,
the
LED
glows.
The
voltage
was
measured
across
the
diode
using
a
mul,meter.
However,
when
the
connec,ons
of
the
diode
were
reversed
i.e.,
when
the
p-­‐side
of
the
diode
is
connected
to
the
posi,ve
terminal
of
the
LED,
the
LED
stopped
glowing.
It
was
also
observed
that
a
diode
needs
a
minimum
forward
bias
voltage
of
0.6-­‐0.7
V
to
allow
the
current
to
pass
through
it.
In
the
second
phase,
you
will
need
a
preset,
a
diode,
a
resistor
and
a
few
connec,ng
wires.
A
voltage
divider
circuit
was
made
using
a
preset.
Using
the
voltage
divider,
different
input
voltages
were
given
to
the
circuit.
At
each
input
voltage,
the
voltage
across
the
diode
and
the
current
passing
through
it
were
measured
using
a
mul,meter.
Five
different
voltage
and
current
readings
were
noted
and
a
graph
was
ploRed
between
V
and
I
to
study
V-­‐I
characteris,cs
of
the
diode.

4. Have
a
look
at
what
we
provide
in
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,
innovaUon
and
high
producUon
value.
CoolJunk
has
been
featured
in
naUonal
and
internaUonal
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:
Diode
For
more
projects
visit
our
website:
CoolJunk
All
tools
and
components
in
one
box.
Step
by
step
visual
instrucUons
Detailed
experiment
theory
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us
on:
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