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Part of Made in India,
Design Innovation
Workshop,2015
A	
  Fresh	
  New	
  Experience	
  in	
  
Project-­‐Making	
  and	
  
Learning
PHYSICSINVESTIGATORY
PROJECTON
ZENERDIODEASVOLTAGE
REGULATOR
You	
  might	
  have	
  seen	
  voltage	
  fluctuaAons	
  at	
  
your	
  home,	
  which	
  may	
  cause	
  damage	
  to	
  any	
  
working	
  electrical	
  appliance.	
  What	
  one	
  needs	
  
is	
  a	
  protecAon	
  device	
  or	
  circuit,	
  which	
  can	
  be	
  
installed	
  to	
  curb	
  out	
  the	
  voltage	
  spikes	
  and	
  
provide	
  a	
  constant	
  voltage	
  output	
  to	
  electrical	
  
devices.	
  For	
  this,	
  we	
  can	
  use	
  a	
  zener	
  diode	
  as	
  
a	
  voltage	
  regulator.
In	
  this	
  project,	
  you	
  will	
  connect	
  two	
  loads	
  
(resistors)	
  in	
  series	
  and	
  connect	
  their	
  
combinaAon	
  to	
  a	
  fluctuaAng	
  voltage	
  source	
  
(using	
  a	
  preset)	
  and	
  test	
  the	
  Kirchhoff’s	
  law.	
  
However,	
  when	
  you	
  connect	
  a	
  zener	
  diode	
  in	
  
parallel	
  to	
  one	
  of	
  the	
  loads,	
  the	
  voltage	
  across	
  
the	
  corresponding	
  load	
  becomes	
  constant	
  
aPer	
  the	
  reverse	
  breakdown	
  voltage	
  of	
  the	
  
zener	
  diode	
  is	
  achieved.	
  All	
  the	
  voltage	
  
readings	
  are	
  taken	
  using	
  a	
  mulAmeter	
  and	
  
Kirchhoff’s	
  Voltage	
  law	
  is	
  verified	
  in	
  the	
  circuit	
  
under	
  different	
  input	
  voltages.	
  
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,	
  innovaNon	
  and	
  high	
  producNon	
  value.	
  CoolJunk	
  has	
  been	
  
featured	
   in	
   naNonal	
   and	
   internaNonal	
   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	
  
instrucNons
Detailed	
  experiment	
  
theory
CoolJunkCoolJunkCoolJunk
Follow	
  us	
  on:

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Physics Investigatory Project on Zener Diode as a Voltage Regulator

  • 1. Part of Made in India, Design Innovation Workshop,2015 A  Fresh  New  Experience  in   Project-­‐Making  and   Learning
  • 3. You  might  have  seen  voltage  fluctuaAons  at   your  home,  which  may  cause  damage  to  any   working  electrical  appliance.  What  one  needs   is  a  protecAon  device  or  circuit,  which  can  be   installed  to  curb  out  the  voltage  spikes  and   provide  a  constant  voltage  output  to  electrical   devices.  For  this,  we  can  use  a  zener  diode  as   a  voltage  regulator. In  this  project,  you  will  connect  two  loads   (resistors)  in  series  and  connect  their   combinaAon  to  a  fluctuaAng  voltage  source   (using  a  preset)  and  test  the  Kirchhoff’s  law.   However,  when  you  connect  a  zener  diode  in   parallel  to  one  of  the  loads,  the  voltage  across   the  corresponding  load  becomes  constant   aPer  the  reverse  breakdown  voltage  of  the   zener  diode  is  achieved.  All  the  voltage   readings  are  taken  using  a  mulAmeter  and   Kirchhoff’s  Voltage  law  is  verified  in  the  circuit   under  different  input  voltages.  
  • 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,  innovaNon  and  high  producNon  value.  CoolJunk  has  been   featured   in   naNonal   and   internaNonal   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   instrucNons Detailed  experiment   theory CoolJunkCoolJunkCoolJunk Follow  us  on: