Question

State need of rectifier and filters

Answer 1

Answer:

To construct a good power supply which gives pure DC output, we need to remove or filter out the AC component from the output of rectifiers. The output from these rectifiers with Ripple components, is fed to filter circuits so that the output from the filter is pure DC.

Answer 2

Answer:The filter is a device that allows passing the dc component of the load and blocks the ac component of the rectifier output.

Rectifiers

The device which converts alternating (bidirectional) voltage to pulsating (Unidirectional) voltage is called rectifier.

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