⟩ The output of the rectifier pulsating in nature, it consists of a desired DC component of voltage and unwanted ripple components. These ripple components are removed by placing filter circuit at the output of the rectifier.Types of filters1. capacitor filter2. series inductor filter3. LC filters of following two types (a)capacitance input filter (b)inductance unput filter4.RC filters.
Filters are used to remove the unwanted or undesirable components of a output
waveform, so the basic work of filters is to smoothen the output.
From electrical devices we
are not getting perfect sinusoidal output, it contains a DC component i.e.
ripples, harmonic distortions etc. so filters are used to rectify these
components.
