Explain the necessity of smoothing the output voltage before applying it to a transistor

amplifier.

In simple words, smoothing can be defined as the circuit which is done to eliminate the ripple from the yield of a direct current power supply.

Explanation:

Necessity of smoothing:

Smoothing can be also applied in the form of a capacitor that acts to decrease or level out variations in a signal. And these capacitors are mostly used after power supply in voltage. The yield DC voltage of a half-wave rectifier provided in the figure of a sinusoidal wave. In a method to provide a constant DC voltage from a corrected AC source, a filter or smoothing circuit is required.