Write down working principle of Half-wave and Full-wave rectifier

The working principle of half-wave rectifier:

The working principle of Half wave rectifier is quite simple i.e. convert alternating current to direct current. The reduced voltage is fed to the diode and load resistance and the input voltage is stepped down using a transformer. The diode will be forward biased during the positive half cycle of the input wave while it is reversed biased during the negative half cycle of the input wave. Across the load resistor, the output is taken out indicates that the diode passes current only during one half cycle of the input wave. During the positive half cycle, the output is positive & significant while during negative half cycle output is zero & significant.

The working principle of full-wave rectifier:

(i) When the voltage of the alternating current is positive, one of the diodes become forward biased whereas the other gets reverse biased. Hence, current flows through the forward biased diode.

(ii) When the voltage of the alternating current is negative, the previous reverse biased diode becomes forward biased whereas the other gets reverse biased. Hence, current flows through the forward biased diode.

(iii) Thus, current flows at least through one of the diodes at a time.