This document describes the operation of a full wave bridge rectifier circuit. It explains that two diodes conduct during the positive half cycle and the other two conduct during the negative half cycle, allowing current to flow through the load in only one direction. This produces a full wave rectified output with both half cycles used. The input AC waveform is shown along with the rectified DC output waveform. Advantages of the bridge rectifier are listed as not requiring a center-tapped transformer and producing twice the output of a center-tap circuit for the same secondary voltage. Disadvantages include requiring four diodes and having double the voltage drop across the diodes compared to a center-tap rectifier.

1. Welcome

2. Full wave Bridge Rectifier
Rubel Biswas
ID:161-15-****

3. Bridge Rectifier

4. Operation'sOparetion
1.Two of four diodes are set such
direction that they conduct only forword
baise.
2.When reverse baise current flow from
remaining diode.
3.Current on load resistance always in
same direction so output is also same
direction.

5. Operation'sOparetion
P
Q
AC
D 1
D 3D 2
D 4
R L

6. On Positive half cycle
D 1
D 3D 2
D 4
+
-

7. On Negative half cycle
D 1 D 4
D 3D 2
+
-

8. Input and Output Wave Form
t
t
V
V
in
o
ut

9. input
output

10. (i) The need for centre-tapped transformer is eliminated.
(ii) The output is twice that of the centre-tap circuit for the same secondary voltage.
(iii)The PIV is one-half that of the centre-tap circuit (for same d.c. output).
Advantages :

11. Disadvantages :
(i) It requires four diodes.
(ii) Voltage drop in diodes becomes double of
that in case of centre-tap rectifier

12. Thank You