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# Physics Investigatory Project on NAND Gate using Diodes.

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Published on: Mar 3, 2016
Published in: Education

#### Transcripts - Physics Investigatory Project on NAND Gate using Diodes.

• 1. Part of Made in India, Design Innovation Workshop,2015 A  Fresh  New  Experience  in   Project-­‐Making  and   Learning
• 2. PHYSICSINVESTIGATORY PROJECTON NANDGATEUSINGDIODES
• 3. Do  you  know  how  the  industrial  boilers  work?  The   boiler  circuit  will  acBvate  a  warning  lamp  if  either  its   water  sensor  or  its  gas  sensor  detects  a  low  level.  The   NAND  gates  will  help  you  infer  its  working;  it  has  two   inputs  (A  and  B)  and  only  one  output  (Q). In  this  project,  you  will  make  a  NAND  gate  logic  circuit   using  two  diodes,  three  resistors,  an  LED  and  a  few   connecBng  wires.  Contrary  to  the  NOR-­‐gate,  in  this   case  the  p-­‐sides  of  the  two  diodes  are  connected  to   each  other  and  at  the  same  potenBal.  Two  connecBng   wires  are  connected  to  the  n-­‐sides  of  the  diodes.  Each   connecBng  wire  represents  the  input.  This  input  could   be  either  1  or  0,  where  1  stands  for  Vcc  (posiBve/high   voltage)  and  0  stands  for  ground  (negaBve/low   voltage). To  provide  the  inputs;  the  truth  table  of  the  NAND-­‐ gate  was  followed. Input  A Input  B Output  Q 0 0 1 0 1 1 1 0 1 1 1 0 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.  AVer  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,  innovaBon  and  high  producBon  value.  CoolJunk  has  been   featured   in   naBonal   and   internaBonal   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:  NAND  GATE For  more  projects  visit  our  website:  CoolJunk   Tools  and  Components  in   one  box. Step  by  step  visual   instrucBons Detailed  experiment   theory CoolJunkCoolJunkCoolJunk Follow  us  on: