Sunday, 30 September 2012

FILTER CIRCUITS

A Rectifier is required to produce pure D.C supply for using at various places in the electronic circuits.  However, the output of a rectifier has pulsating character.  It contains A.C and D.C components.  The A.C component is undesirable  and must kept away from the load.  To do so, a filter circuit is used which removes the A.C component and allows only the D.C component to reach the load.

A filter circuit is a device which removes the A.C component of rectification output but allows the D.C component to reach the load.