Thursday 7 March 2013

DC Power Supply 8

Filters

As we have seen, the output of a rectifier is a pulsating DC. With filtration and regulation this pulsating voltage can be smoothed out and kept to a steady value.


 


Charging Discharging


A capacitor-input filter will charge and discharge such that it fills in the “gaps” between each peak. This reduces variations of voltage. The remaining voltage variation is called ripple voltage.  
  
  

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