Decoupling vs bypass capacitor

Replies

• 

  bhushanb

  hey hi
  the coupling capacitor is capacitor joining the two stages of the amplifire
  & the bypass capacitor is capacitor wich bypasses the emmiter trough ground point
  
  ok .................
• 

  Munguti

  The coupling capacitor prevents DC from one amplifier stage from reaching the next amplifier stage so that the bias point for the subsequent stage is not affected.
  
  The bypass capacitor provides a short circuit at the ac operating frequency of the amplifier for the ac signals so that the emitter bias resistor does not affect the ac signal being amplified.
• 

  bhushanb

  Munguti

  The coupling capacitor prevents DC from one amplifier stage from reaching the next amplifier stage so that the bias point for the subsequent stage is not affected.
  
  The bypass capacitor provides a short circuit at the ac operating frequency of the amplifier for the ac signals so that the emitter bias resistor does not affect the ac signal being amplified.

  hi nice explanation..........
• 

  swapnakumar

  De-coupling capacitors are used in near a power supply i.e.for Hf/Lf filteration purposes.
  Bypass capacitor bypasses the unwanted signals(noise) to ground.
• 

  bhushanb

  swapnakumar

  De-coupling capacitors are used in near a power supply i.e.for Hf/Lf filteration purposes.
  Bypass capacitor bypasses the unwanted signals(noise) to ground.

  Hello Miss
  actually the decoupling capacitor means to decouple the two stages of the amplifired and also it act as the isolation capacitor,
  AnD bypass capacitor wich bypass the emitter terminal to ther ground in power amplifire, its function is to bypass the noisy signal to ground .... thats it.
• 

  swapnakumar

  hello bhushanb,
  i design circuits i dont know about you but near the powerupply we do require a de-cap as i explained.this is for your info do not argue i dont know your experience in designing but i do have sufficient knowhow on what and where it can be used!!!!