Part of Made in India,Design Innovation

Workshop,2015

A  Fresh  New  Experience  in  Project-­‐Making  &  Learning!

PHYSICS INVESTIGATORY PROJECT ON

PROTECTING A CIRCUIT USING A DIODE

Do  you  know  how  a  clock  operates?  The  hands  of  the  clock  run  in  a  clockwise  direcDon  because  the  motor  runs  in  the  same  direcDon.  Now,  if  the  

direcDon  of  the  baIery  is  reversed,  the  clock  will  stop.  This  happens  because  the  diode  is  present  in  the  clock  circuit  which  prevents  the  motor  to  run  in  the  anD-­‐clockwise  direcDon.  

In  this  project,  you  will  need  a  resistor,  a  diode,  a  DC  motor  and  a  few  connecDng  wires.  The  connecDons  are  made  such  that  the  resistor  is  

connected  in  series  with  the  parallel  combinaDon  of  the  diode  and  the  motor.  AMer  the  compleDon  of  the  circuit,  the  motor  starts  to  rotate.  When  the  

baIery  connecDons  are  reversed,  the  motor  stops  to  rotate.  The  two  phenomena  were  reasoned  doing  the  current  path  analysis  in  both  the  cases.  Thus,  the  diode  ensures  that  the  motor  does  not  rotate  in  the  opposite  direcDon  when  the  baIery  connecDons  are  reversed.

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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,  innovaDon   and  high  producDon  value.  CoolJunk  has  been  featured   in   naDonal   and   internaDonal   journals   including   Wallstreet,   Yourstory,   Hindu   Business   Line,  NextBigWhat  and  was  tagged  as  the  coolest  Indian  start-­‐up  in  IAN  Bootcamp-­‐2011.  

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