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

2. PHYSICSINVESTIGATORY
PROJECTON
RELAYASANOSCILLATOR

3. A
relay
is
an
electromagne0c
switch.
Do
you
know
that
we
can
use
it
to
build
oscilla0ons?
Consider
there
are
two
LEDs.
First,
one
of
the
LEDs
glow
and
then
it
gets
OFF.
Then
the
second
LED
glows
and
it
goes
off.
Then
the
first
one
again
glows
and
the
cycle
repeats
itself.
In
this
circuit,
we
can
control
the
number
of
0mes
the
relay
gets
ac0vated
and
deac0vated
in
one
second.
This
circuit
uses
a
capacitor,
two
LEDs,
a
relay
and
a
momentarily
push
switch.
When
the
switch
is
pressed,
the
current
oscillates
between
LEDs,
due
to
which
they
glow
alternately.
A
clock
sound
is
heard
periodically.
We
can
also
modify
the
circuit
to
speed
up
the
oscilla0ons.
So,
get
ready
to
create
some
real
fast
oscilla0ons!

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,
innova0on
and
high
produc0on
value.
CoolJunk
has
been
featured
in
na0onal
and
interna0onal
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
instruc0ons
Detailed
experiment
theory
CoolJunkCoolJunkCoolJunk
Follow
us
on: