Full wave rectifier

P-N junction diode:-

Fig:-Diode

 It is an electronics component that allows the current to flow only in one direction.
Forward biasing:-

When the p-side of diode is connect to the positive side and n-side of diode is connect to the negative side of the battery then the diode is said to be forward biased.During forward biasing the depletion width is reduced & the barrier potential is reduced so current flows.
Reversed biasing:-

when the p-side is connected  to the negative side of battery and n-side of battery is connect to the positive side of the battery then the diode is said to  be reversed biased.The depletion width is increased  as result no current flows due to majority charge but small amount of current flow due to minority charge carrier.

Full Wave Rectifier:-
 There are two types of  full wave rectifier they are mention below:-

• Bridge Rectifier
• Centre Tapped

Bridge rectifier

Operations:-
During positive cycle:-

• During the positive half cycle diodes D1 and D3 are in forward biased and diodes D2&D4 are in reversed biased.
• Equivalent circuit is shown below  

During negative cycle:-

• During the  negative half cycle diodes D2 and D4 are in farward  biased and  diodes D1 and D3 are in reversed biased.
• Equivalent circuit is given below

Combined output of bridge rectifier is shown below:-

Centered tapped:-

Operations:-
During positive cycle:-

• During the positive cycle diode D1 is in farward biased and diode D2 is in reversed biased.
• The equivalent diagram is shown below:- 

During negative cycle:-

• During the positive cycle diode D2 is in farward biased and diode D1 is in reversed biased.
• The equivalent diagram is shown below:- 

Combined output of the centered tapped rectifier is shown below:-