although the AC signal is rectified the output which we get is the pulsating DC which is not desired because many appliances wok on plain DC voltage . The pulsating DC can be viewed as AC + DC component of the signal
ripple factor of a rectified circuit is the ratio of AC component of signal to the DC component of the same rectified output signal. higher the ripple factor says that the signal is not smooth so lesser is its application.
the components used to smooth these type of signals or to remove the 'ripple voltage' as called filters
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A: Without a capacitor to smooth out the DC there will be no ripple just pulsating DC at double of the input frequency. But if you add a capacitor then the ripple will be directly related to the load.
Rippling can be reduced by incorporating an inductor or capacitor filter. The most common type of filter out there is a capacitive filter.
The ripple factor of Half wave rectifier is the ratio of the rms value of the ac components to the dc value of the component
Either less ripple voltage with the same filter capacitance, or similar ripple voltage with smaller filter capacitances (and thus physically smaller filter capacitors).
The frequency of a full-wave rectifier is double that of the input, if the input is a sine wave or triangle wave. If the input is a square wave, the output is DC. If the input is a sawtooth wave, the output is a triangle wave of the same frequency.
twice the frequency that is rectified.
either less ripple or ability to use smaller filter
Right: Example out of a transformer AC to DCAnother Answer:Anywhere there is AC and DC is required. A full wave rectifier is a circuit that produces a DC pulse using both halves of an AC sine wave - full wave rectifier.