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capacitor

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capacitor


  2  definitions  found 
 
  From  WordNet  r  1.6  [wn]: 
 
  capacitor 
  n  :  an  electrical  device  characterized  by  its  capacitance  [syn: 
  {condenser},  {electrical  condenser}] 
 
  From  The  Free  On-line  Dictionary  of  Computing  (13  Mar  01)  [foldoc]: 
 
  capacitor 
 
    An  electronic  device  that  can  store  electrical 
  charge.  The  charge  stored  Q  in  Coulombs  is  related  to  the 
  capacitance  C  in  Farads  and  the  voltage  V  across  the  capacitor 
  in  Volts  by  Q  =  CV 
 
  The  basis  of  a  {dynamic  RAM}  cell  is  a  capacitor.  They  are 
  also  used  for  power-supply  smoothing  (or  "decoupling").  This 
  is  especially  important  in  digital  circuits  where  a  digital 
  device  switching  between  states  causes  a  sudden  demand  for 
  current.  Without  sufficient  local  power  supply  decoupling, 
  this  current  spike"  cannot  be  supplied  directly  from  the 
  power  supply  due  to  the  inductance  of  the  connectors  and  so 
  will  cause  a  sharp  drop  in  the  power  supply  voltage  near  the 
  switching  device.  This  can  cause  other  devices  to  malfunction 
  resulting  in  hard  to  trace  {glitch}es. 
 
  (1995-04-12) 
 
 




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